Cover Page - shares	6 Months Ended
Cover Page - shares	Nov. 30, 2019	Jan. 07, 2020
Amendment Flag	false
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	Q2
Entity Central Index Key	0001275187
Current Fiscal Year End Date	--05-31
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Nov. 30, 2019
Document Transition Report	false
Entity File Number	0-50761
Entity Registrant Name	AngioDynamics, Inc.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	11-3146460
Entity Address, Address Line One	14 Plaza Drive
Entity Address, City or Town	Latham
Entity Address, State or Province	NY
Entity Address, Postal Zip Code	12110
City Area Code	518
Local Phone Number	795-1400
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		37,625,690
Common Stock
Title of 12(b) Security	Common stock, par value $.01
Trading Symbol	ANGO
Security Exchange Name	NASDAQ
Preferred Stock Purchase Rights
No Trading Symbol Flag	true
Title of 12(b) Security	Preferred Stock Purchase Rights
Security Exchange Name	NASDAQ

Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Nov. 30, 2019	Nov. 30, 2018	Nov. 30, 2019	Nov. 30, 2018
Income Statement [Abstract]
Net sales	$ 70,003	$ 69,985	$ 136,045	$ 133,928
Cost of sales (exclusive of intangible amortization)	28,459	29,433	56,284	57,423
Gross profit	41,544	40,552	79,761	76,505
Operating expenses:
Research and development	7,764	7,076	14,055	14,450
Sales and marketing	20,113	19,263	39,493	37,669
General and administrative	10,994	9,262	19,448	17,697
Amortization of intangibles	4,530	4,506	8,398	7,939
Change in fair value of contingent consideration	145	244	(303)	256
Acquisition, restructuring and other items, net	1,421	2,728	2,921	7,150
Total operating expenses	44,967	43,079	84,012	85,161
Operating loss	(3,423)	(2,527)	(4,251)	(8,656)
Other (expenses) income:
Interest expense, net	(41)	(1,330)	(506)	(2,247)
Other income (expense), net	162	80	64	194
Total other income (expense), net	121	(1,250)	(442)	(2,053)
Loss from continuing operations before income tax benefit	(3,302)	(3,777)	(4,693)	(10,709)
Income tax benefit	(566)	(190)	(682)	(1,418)
Net loss from continuing operations	(2,736)	(3,587)	(4,011)	(9,291)
Income from discontinued operations, net of income tax	0	5,727	0	10,962
Net income (loss)	$ (2,736)	$ 2,140	$ (4,011)	$ 1,671
Loss per share continuing operations - basic (usd per share)	$ (0.07)	$ (0.10)	$ (0.11)	$ (0.25)
Loss per share continuing operations - diluted (usd per share)	(0.07)	(0.10)	(0.11)	(0.25)
Income per share discontinued operations - basic (usd per share)	0.00	0.15	0.00	0.29
Income per share discontinued operations - diluted (usd per share)	0.00	0.15	0.00	0.29
Income (loss) per share
Basic (in usd per share)	(0.07)	0.06	(0.11)	0.04
Diluted (in usd per share)	$ (0.07)	$ 0.06	$ (0.11)	$ 0.04
Basic weighted average shares outstanding (in shares)	37,992	37,500	37,887	37,411
Diluted weighted average shares outstanding (in shares)	37,992	37,500	37,887	37,411

Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Nov. 30, 2019	Nov. 30, 2018	Nov. 30, 2019	Nov. 30, 2018
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ (2,736)	$ 2,140	$ (4,011)	$ 1,671
Other comprehensive income (loss), before tax:
Unrealized gain on marketable securities	0	0		33
Foreign currency translation	231	(206)	80	(331)
Other comprehensive income (loss), before tax	231	(206)	80	(298)
Income tax expense related to items of other comprehensive income	0	0	0	0
Other comprehensive income (loss), net of tax	231	(206)	80	(298)
Total comprehensive income (loss), net of tax	$ (2,505)	$ 1,934	$ (3,931)	$ 1,373

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

+ References + Details

Consolidated Balance Sheets - USD ($) $ in Thousands	Nov. 30, 2019	May 31, 2019
Current assets
Cash and cash equivalents	$ 41,247	$ 227,641
Accounts receivable, net of allowances of $2,068 and $1,906 respectively	33,994	43,577
Inventories	50,239	40,071
Prepaid expenses and other	6,496	4,003
Total current assets	131,976	315,292
Property, plant and equipment, net	27,508	24,258
Other assets	8,976	3,835
Intangible assets, net	196,325	145,387
Goodwill	360,094	347,666
Total assets	724,879	836,438
Current liabilities
Accounts payable	17,968	22,829
Accrued liabilities	28,478	38,338
Current portion of long-term debt	0	7,500
Current portion of contingent consideration	889	4,635
Other current liabilities	9,670	0
Total current liabilities	57,005	73,302
Long-term debt, net of current portion	0	124,407
Deferred income taxes	24,586	14,542
Contingent consideration, net of current portion	25,986	8,851
Other long-term liabilities	3,492	521
Total liabilities	111,069	221,623
Commitments and contingencies (Note 15)
Stockholders' equity
Preferred stock, par value $.01 per share, 5,000,000 shares authorized; no shares issued and outstanding	0	0
Common stock, par value $.01 per share, 75,000,000 shares authorized; 38,363,926 and 37,984,382 shares issued and 37,993,926 and 37,614,382 shares outstanding at November 30, 2019 and May 31, 2019, respectively	373	372
Additional paid-in capital	557,965	555,040
Retained earnings	62,458	66,469
Treasury stock, 370,000 shares at November 30, 2019 and May 31, 2019, respectively	(5,714)	(5,714)
Accumulated other comprehensive loss	(1,272)	(1,352)
Total Stockholders’ Equity	613,810	614,815
Total Liabilities and Stockholders' Equity	$ 724,879	$ 836,438

Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Nov. 30, 2019	May 31, 2019
Statement of Financial Position [Abstract]
Accounts receivable, allowances	$ 2,068	$ 1,906
Preferred stock, par value (in usd per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized (in shares)	5,000,000	5,000,000
Preferred stock, shares issued (in shares)	0	0
Preferred stock, shares outstanding (in shares)	0	0
Common stock, par value (in usd per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	75,000,000	75,000,000
Common stock, shares issued (in shares)	38,363,926	37,984,382
Common stock, shares outstanding (in shares)	37,993,926	37,614,382
Treasury stock, shares (in shares)	370,000	370,000

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Nov. 30, 2019	Nov. 30, 2018
Cash flows from operating activities:
Net income (loss)	$ (4,011)	$ 1,671
Adjustments to reconcile net loss to net cash provided by operating activities:
Depreciation and amortization	11,110	12,291
Non-cash lease expense	904
Stock based compensation	4,226	4,741
Change in fair value of contingent consideration	(303)	256
Gain on contingent consideration for IPR&D Write-off	(734)	495
Change in accounts receivable allowances	199	(75)
Fixed and intangible asset impairments and disposals	369	12
Write-off of other assets	593	0
Other	(27)	(17)
Changes in operating assets and liabilities:
Accounts receivable	9,464	(3,068)
Inventories	(10,009)	(955)
Prepaid expenses and other	(3,544)	(1,183)
Accounts payable, accrued and other liabilities	(8,834)	(10,082)
Net cash provided by (used in) operating activities	(597)	4,086
Cash flows from investing activities:
Additions to property, plant and equipment	(4,014)	(1,416)
Acquisition of intangibles	(350)	0
Cash paid for acquisitions	(45,760)	(84,920)
Net cash used in investing activities	(50,124)	(86,336)
Cash flows from financing activities:
Proceeds from issuance of and borrowings on long-term debt	0	55,000
Repayment of long-term debt	(132,500)	(2,500)
Deferred financing costs on long-term debt	741	0
Payment of acquisition related contingent consideration	(1,208)	(2,100)
Proceeds (outlays) from exercise of stock options and employee stock purchase plan	(1,300)	854
Net cash provided by (used in) financing activities	(135,749)	51,254
Effect of exchange rate changes on cash and cash equivalents	76	(280)
Decrease in cash and cash equivalents	(186,394)	(31,276)
Cash and cash equivalents at beginning of period	227,641	74,096
Cash and cash equivalents at end of period	41,247	42,820
Supplemental disclosure of non-cash investing and financing activities:
Accrual for capital expenditures incurred during the period	444	(19)
Fair value of contingent consideration for acquisitions	14,900	25,100
Fair value of acquisition consideration included in other long-term liabilities	$ 0	$ 4,863

Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands	Total	Restricted stock units	Performance share units	Common Stock	Common Stock Restricted stock units	Common Stock Performance share units	Additional paid in capital	Additional paid in capital Restricted stock units	Retained earnings	Accumulated other comprehensive loss	Treasury Stock
Beginning Balance, Shares at May. 31, 2018				37,594,493
Beginning Balance at May. 31, 2018	$ 542,595			$ 370			$ 543,762		$ 5,129	$ (952)	$ (5,714)
Beginning Balance,Treasury Shares at May. 31, 2018											(370,000)
Net income (loss)	(469)								(469)
Exercise of stock options, Shares				71,336
Exercise of stock options	608			$ 1			607
Issuance/Cancellation of performance share units and restricted stock units, net, Shares					149,446	5,235
Issuance/Cancellation of performance share units and restricted stock units		$ (460)	$ 0					$ (460)
Purchase of common stock under ESPP, Shares				40,547
Purchases of common stock under ESPP	557			$ 1			556
Stock-based compensation	2,150						2,150
Other comprehensive income, net of tax	(92)									(92)
Ending Balance, Shares at Aug. 31, 2018				37,861,057
Ending Balance at Aug. 31, 2018	544,889			$ 372			546,615		4,660	(1,044)	$ (5,714)
Ending Balance,Treasury Shares at Aug. 31, 2018											(370,000)
Beginning Balance, Shares at May. 31, 2018				37,594,493
Beginning Balance at May. 31, 2018	542,595			$ 370			543,762		5,129	(952)	$ (5,714)
Beginning Balance,Treasury Shares at May. 31, 2018											(370,000)
Net income (loss)	1,671
Ending Balance, Shares at Nov. 30, 2018				37,875,529
Ending Balance at Nov. 30, 2018	549,563			$ 372			549,355		6,800	(1,250)	$ (5,714)
Ending Balance,Treasury Shares at Nov. 30, 2018											(370,000)
Beginning Balance, Shares at Aug. 31, 2018				37,861,057
Beginning Balance at Aug. 31, 2018	544,889			$ 372			546,615		4,660	(1,044)	$ (5,714)
Beginning Balance,Treasury Shares at Aug. 31, 2018											(370,000)
Net income (loss)	2,140								2,140
Exercise of stock options, Shares				10,571
Exercise of stock options	149						149
Issuance/Cancellation of performance share units and restricted stock units, net, Shares					3,901
Issuance/Cancellation of performance share units and restricted stock units		0
Stock-based compensation	2,591						2,591
Other comprehensive income, net of tax	(206)									(206)
Ending Balance, Shares at Nov. 30, 2018				37,875,529
Ending Balance at Nov. 30, 2018	549,563			$ 372			549,355		6,800	(1,250)	$ (5,714)
Ending Balance,Treasury Shares at Nov. 30, 2018											(370,000)
Beginning Balance, Shares at May. 31, 2019				37,984,382
Beginning Balance at May. 31, 2019	$ 614,815			$ 372			555,040		66,469	(1,352)	$ (5,714)
Beginning Balance,Treasury Shares at May. 31, 2019	(370,000)										(370,000)
Net income (loss)	$ (1,275)								(1,275)
Exercise of stock options, Shares				48,136
Exercise of stock options	531			$ 1			530
Issuance/Cancellation of performance share units and restricted stock units, net, Shares					287,087
Issuance/Cancellation of performance share units and restricted stock units		$ (2,459)						$ (2,459)
Purchase of common stock under ESPP, Shares				40,270
Purchases of common stock under ESPP	628						628
Stock-based compensation	1,984						1,984
Other comprehensive income, net of tax	(151)									(151)
Ending Balance, Shares at Aug. 31, 2019				38,359,875
Ending Balance at Aug. 31, 2019	614,073			$ 373			555,723		65,194	(1,503)	$ (5,714)
Ending Balance,Treasury Shares at Aug. 31, 2019											(370,000)
Beginning Balance, Shares at May. 31, 2019				37,984,382
Beginning Balance at May. 31, 2019	$ 614,815			$ 372			555,040		66,469	(1,352)	$ (5,714)
Beginning Balance,Treasury Shares at May. 31, 2019	(370,000)										(370,000)
Net income (loss)	$ (4,011)
Ending Balance, Shares at Nov. 30, 2019				38,363,926
Ending Balance at Nov. 30, 2019	$ 613,810			$ 373			557,965		62,458	(1,272)	$ (5,714)
Ending Balance,Treasury Shares at Nov. 30, 2019	(370,000)										(370,000)
Beginning Balance, Shares at Aug. 31, 2019				38,359,875
Beginning Balance at Aug. 31, 2019	$ 614,073			$ 373			555,723		65,194	(1,503)	$ (5,714)
Beginning Balance,Treasury Shares at Aug. 31, 2019											(370,000)
Net income (loss)	(2,736)								(2,736)
Issuance/Cancellation of performance share units and restricted stock units, net, Shares					4,051
Issuance/Cancellation of performance share units and restricted stock units			$ 0
Stock-based compensation	2,242
Other comprehensive income, net of tax	231									231
Ending Balance, Shares at Nov. 30, 2019				38,363,926
Ending Balance at Nov. 30, 2019	$ 613,810			$ 373			$ 557,965		$ 62,458	$ (1,272)	$ (5,714)
Ending Balance,Treasury Shares at Nov. 30, 2019	(370,000)										(370,000)

Acquisitions

6 Months Ended

Nov. 30, 2019

Business Combinations [Abstract]

Acquisitions

ACQUISITIONS

Eximo Acquisition

On October 2, 2019, the Company entered into a share purchase agreement to acquire Eximo Medical, Ltd., a pre-commercial stage medical device company and its proprietary 355nm B Laser Atherectomy technology. The aggregate purchase price of $60.7 million included an upfront payment of $45.8 million and contingent consideration with an estimated fair value of $14.9 million. This acquisition expands and complements the Company’s Vascular Interventions and Therapies product portfolio by adding the 355nm B Laser Atherectomy technology which treats Peripheral Artery Disease.

The Company accounted for the Eximo acquisition under the acquisition method of accounting for business combinations. Accordingly, the cost to acquire the assets was allocated to the underlying net assets in proportion to estimates of their respective fair values. The excess of the purchase price over the estimated fair value of the net assets acquired was recorded as goodwill. Goodwill is non-deductible for income tax purposes.

The Company has not disclosed the amount of revenue and earnings for sales of Eximo products since acquisition, nor proforma information, because these amounts are not significant to the Company's financial statements. Acquisition-related costs associated with the Eximo acquisition, which are included in "acquisition, restructuring and other items, net" in the accompanying Consolidated Statements of Operations, were approximately $0.6 million in fiscal year 2020. The following table summarizes the preliminary aggregate purchase price allocated to the net assets acquired:



(in thousands)	Oct 2, 2019
Accounts receivable	$	50
Inventory	150
Prepaid and other current assets	54
Long-term deposits	51
Property, plant and equipment	397
Intangible assets:
Product technology	59,000
Goodwill	12,428
Total assets acquired	$	72,130
Liabilities assumed
Accounts payable	$	84
Other current liabilities	615
Deferred tax liabilities	10,771
Total liabilities assumed	$	11,470
Net assets acquired	$	60,660

The allocation of the purchase price to the assets acquired and liabilities assumed, including the amount allocated to goodwill, is subject to change within the measurement period (up to one year from the acquisition date) as additional information that existed at the date of the acquisition related to the values of assets acquired and liabilities assumed is obtained.

The value assigned to the product technology was derived using the multi-period excess earnings method under the income approach. This approach estimates the excess earnings generated over the lives of the customers that existed as of the acquisition date and discounts such earnings to present value. The product technology is deemed to have a useful life of fifteen years and will be amortized on a straight-line basis over the useful life.

The goodwill arising from the acquisition consists largely of synergies and economies of scale the Company hopes to achieve from combining the acquired assets with the Company's current operations.

RadiaDyne Acquisition

On September 21, 2018, the Company acquired RadiaDyne, a privately held medical diagnostic and device company that designs and develops patient dose monitoring technology to improve cancer treatment outcomes. The aggregate purchase price of $75.0 million included an upfront payment of $47.9 million, contingent consideration with an estimated fair value of $22.3 million, an indemnification holdback of $4.6 million and a purchase price holdback of $0.2 million. The fair value of $22.3 million in contingent consideration is comprised of $16.5 million for the revenue milestones and $5.8 million for the technical milestones. The $4.6 million indemnification holdback is recorded in accrued liabilities at November 30, 2019 and the $0.2 million purchase price holdback was initially recorded in accrued liabilities, and was paid during the third quarter of fiscal year 2019.

This acquisition expands the Company’s growing Oncology business by adding RadiaDyne’s early-stage, proprietary OARtrac® real-time radiation dose monitoring platform and other market-leading oncology solutions, including the IsoLoc®/ImmobiLoc® and Alatus® balloon stabilizing technologies.

The Company accounted for the RadiaDyne acquisition under the acquisition method of accounting for business combinations. Accordingly, the cost to acquire the assets was allocated to the underlying net assets in proportion to estimates of their respective fair values. The excess of the purchase price over the estimated fair value of the net assets acquired was recorded as goodwill. Goodwill is deductible for income tax purposes.

The Company has not disclosed the amount of revenue and earnings for sales of RadiaDyne products since acquisition, nor proforma information, because these amounts are not significant to the Company's financial statements. Acquisition-related costs associated with the RadiaDyne acquisition, which are included in "acquisition, restructuring and other items, net" in the accompanying Consolidated Statements of Operations, were approximately $1.6 million in fiscal year 2019. The following table summarizes the preliminary and final aggregate purchase price allocated to the net assets acquired:



(in thousands)	Final allocation
Accounts receivable	$	900
Inventory	732
Prepaid and other current assets	98
Property, plant and equipment	133
Intangible assets:
RadiaDyne trademark	400
OARtrac trademark	200
RadiaDyne legacy product technology	1,500
OARtrac product technology	18,900
RadiaDyne customer relationships	4,600
Goodwill	47,982
Total assets acquired	$	75,445
Liabilities assumed
Accounts payable	$	352
Accrued expenses	106
Total liabilities assumed	$	458
Net assets acquired	$	74,987

The Company finalized the allocation of the purchase price to the assets acquired and liabilities assumed in the fourth quarter of FY19.

The values assigned to the RadiaDyne and OARtrac trademark and product technologies were derived using the relief-from-royalties method under the income approach. This approach is used to estimate the cost savings that accrue for the owner of an intangible asset who would otherwise have to pay royalties or licensing fees on revenues earned through the use of the asset if they had not owned the rights to use the assets. The net after-tax royalty savings are calculated for each year in the remaining economic life of the intangible asset and discounted to present value. The trademarks are deemed to have a useful life of five to seven years and the product technologies are deemed to have a useful life of seven to ten years. Both are amortized on a straight-line basis over their useful life.

The value assigned to customer relationships was derived using the multi-period excess earnings method under the income approach. This approach estimates the excess earnings generated over the lives of the customers that existed as of the acquisition date and discounts such earnings to present value. Customer relationships are amortized on a straight-line basis over fifteen years.

The goodwill arising from the acquisition consists largely of synergies and economies of scale the Company hopes to achieve from combining the acquired assets with the Company's current operations.

BioSentry Acquisition

On August 14, 2018, the Company acquired the BioSentry product from Surgical Specialties, LLC (“SSC”), for an aggregate purchase price of $39.8 million of which $37.0 million was paid on August 14, 2018 and $2.8 million was recorded as contingent consideration. The contingent consideration liability was recorded at fair value and was paid in the fourth quarter of fiscal year 2019 upon fulfillment of hydrogel orders by SSC.

The Company accounted for the BioSentry acquisition under the acquisition method of accounting for business combinations. Accordingly, the cost to acquire the assets was allocated to the underlying net assets in proportion to estimates of their respective fair values. The excess of the purchase price over the estimated fair value of the net assets acquired was recorded as goodwill. Goodwill is deductible for income tax purposes.

The Company has not disclosed the amount of revenue and earnings for sales of BioSentry products since acquisition, nor proforma information, because these amounts are not significant to the Company's financial statements. Acquisition-related costs associated with the BioSentry acquisition, which are included in "acquisition, restructuring and other items, net" in the accompanying Consolidated Statements of Operations, were approximately $1.0 million in fiscal year 2019. The following

table summarizes the preliminary and revised final purchase price allocated to the net assets acquired:



(in thousands)	Final allocation
Inventory	$	50
Property, plant and equipment	10
Intangible assets:
BioSentry trademark	2,500
BioSentry product technology	20,900
Customer relationships	2,600
Goodwill	13,740
Net assets acquired	$	39,800

The Company finalized the allocation of the purchase price to the assets acquired and liabilities assumed in the fourth quarter of FY19.

The values assigned to the BioSentry trademark and product technologies were derived using the relief-from-royalties method under the income approach. This approach is used to estimate the cost savings that accrue for the owner of an intangible asset who would otherwise have to pay royalties or licensing fees on revenues earned through the use of the asset if they had not owned the rights to use the assets. The net after-tax royalty savings are calculated for each year in the remaining economic life of the intangible asset and discounted to present value. The trademark and product technologies are deemed to have a fifteen year useful life and are amortized on a straight-line basis over their useful life.

The goodwill arising from the acquisition consists largely of synergies and economies of scale the Company hopes to achieve from combining the acquired assets with the Company's current operations.

Divestitures Divestitures

6 Months Ended

Nov. 30, 2019

Discontinued Operations and Disposal Groups [Abstract]

Divestitures

DIVESTITURES

Fluid Management

On May 31, 2019, the Company completed the sale of the NAMIC Fluid Management business (the “Divestiture”) and all of the assets used primarily in connection with the Fluid Management business to Medline Industries, Inc. (“Medline”) pursuant to an asset purchase agreement dated April 17, 2019 (the “Asset Purchase Agreement”). Total consideration received by the Company for the Divestiture in the fourth quarter of fiscal year 2019 was $169.2 million in cash and resulted in a gain of $46.6 million after working capital adjustments of $0.6 million. The gain was recorded in discontinued operations. On June 3, 2019, a portion of the net proceeds were used to retire the outstanding balance on the Term Loan and Revolving Facility and the remaining net proceeds will continue to be invested in the business.

Pursuant to a transition services agreement entered into and effective on the closing of the transaction, the Company will supply certain services to Medline. Medline will receive certain legal, human resource, tax, accounting and information technology services from the Company for a period generally not to exceed 24 months.

As a result of the Divestiture, the results of operations from the Fluid Management business are reported in the accompanying Consolidated Statements of Operations as “Income from discontinued operations, net of income tax” for the three months and six months ended November 30, 2018. The following table summarizes the financial results of our discontinued operations:



	Three Months Ended		Six Months Ended
(in thousands)	Nov 30, 2018		Nov 30, 2018
Net sales	$	21,518	$	42,915
Cost of sales (exclusive of amortization)	12,962		25,844
Gross profit	8,556		17,071
Operating expenses
Research and development	287		575
Sales and marketing	1,005		2,033
General and administrative	73		135
Amortization of intangibles	683		1,365
Total operating expenses	2,048		4,108
Operating income	6,508		12,963

Income from discontinued operations before income taxes	6,508		12,963
Income tax expense	781		2,001
Income from discontinued operations	$	5,727	$	10,962

In accordance with accounting principles generally accepted in the United States (“GAAP”), only expenses specifically identifiable and related to a business to be disposed may be allocated to discontinued operations. As such, the selling and marketing, research and development and general and administrative expenses recorded in discontinued operations include corporate costs incurred directly in support of the Fluid Management portfolio.

Total operating and investing cash flows of discontinued operations for the six months ended November 30, 2018 is comprised of the following, which excludes the effect of income taxes:



	Six Months Ended
(in thousands)	Nov 30, 2018
Net cash provided by operating activities	$	516
Net cash provided by investing activities	446

Revenue from Contracts with Customers

6 Months Ended

Nov. 30, 2019

Revenue from Contract with Customer [Abstract]

Revenue from Contracts with Customers

REVENUE FROM CONTRACTS WITH CUSTOMERS

Revenue Recognition

Under ASC 606, revenue is recognized when a customer obtains control of promised goods or services, in an amount that reflects the consideration which the entity expects to receive in exchange for those goods or services. To determine revenue recognition for arrangements that an entity determines are within the scope of ASC 606, the Company performs the following five steps: (i) identify the contract(s) with a customer; (ii) identify the performance obligations in the contract; (iii) determine the transaction price; (iv) allocate the transaction price to the performance obligations in the contract; and (v) recognize revenue when (or as) the entity satisfies a performance obligation.

The Company has one primary revenue stream which is the sales of its products.

Disaggregation of Revenue

The following tables summarize net product revenue by Global Business Unit ("GBU") and geography for the three and six months ended November 30, 2019 and 2018:



	Three months ended Nov 30, 2019						Three months Ended Nov 30, 2018
(in thousands)	United States		International		Total		United States		International		Total
Net sales
Vascular Interventions & Therapies	$	27,601	$	3,549	$	31,150	$	27,243	$	3,733	$	30,976
Vascular Access	18,563		4,221		22,784		20,081		3,642		$	23,723
Oncology	9,391		6,678		16,069		8,976		6,310		$	15,286
Total	$	55,555	$	14,448	$	70,003	$	56,300	$	13,685	$	69,985



	Six months ended Nov 30, 2019						Six months Ended Nov 30, 2018
(in thousands)	United States		International		Total		United States		International		Total
Net sales
Vascular Interventions & Therapies	$	53,277	$	6,786	$	60,063	$	53,093	$	6,480	$	59,573
Vascular Access	37,847		8,096		45,943		40,528		6,985		47,513
Oncology	17,368		12,671		30,039		14,175		12,667		26,842
Total	$	108,492	$	27,553	$	136,045	$	107,796	$	26,132	$	133,928

Net Product Revenue

The Company's products consist of a wide range of medical, surgical and diagnostic devices used by professional healthcare providers for vascular access, for the treatment of peripheral vascular disease and for use in oncology and surgical settings. The Company's devices are generally used in minimally invasive, image-guided procedures. Most of the Company's products are intended to be used once and then discarded, or they may be implanted for short or long term use. The Company sells its products to its distribution partners and to end users, such as interventional radiologists, interventional cardiologists, vascular surgeons, urologists, interventional and surgical oncologists and critical care nurses.

Contracts and Performance Obligations

The Company contracts with its customers based on customer purchase orders, which in many cases are governed by master purchasing agreements. The Company’s contracts with customers are generally for product only, and do not include other performance obligations such as services or other material rights. As part of its assessment of each contract, the Company evaluates certain factors including the customer’s ability to pay (or credit risk). For each contract, the Company considers the promise to transfer products, each of which is distinct, to be the identified performance obligations.

Transaction Price and Allocation to Performance Obligations

Transaction prices of products are typically based on contracted rates. Product revenue is measured as the amount of consideration the Company expects to receive in exchange for transferring products to a customer. To the extent the transaction price includes variable consideration, the Company estimates the amount of variable consideration that should be included in the transaction price utilizing the expected value method. As such, revenue is recorded net of rebates, returns and other deductions.

If a contract contains a single performance obligation, the entire transaction price is allocated to the single performance obligation. Contracts that contain multiple performance obligations require an allocation of the transaction price based on the estimated relative standalone selling prices of the promised products underlying each performance obligation. The Company has standard pricing for its products and determines standalone selling prices based on the price at which the performance obligation is sold separately.

Revenue Recognition

Revenue is recognized when control of the product is transferred to the customer (i.e., when the Company’s performance obligation is satisfied), which occurs at a point in time, and may be upon shipment from the Company’s manufacturing site or delivery to the customer’s named location, based on the contractual shipping terms of a contract.

In determining whether control has transferred, the Company considers if there is a present right to payment from the customer and when physical possession, legal title and risks and rewards of ownership have transferred to the customer.

The Company typically invoices customers upon satisfaction of identified performance obligations. As the Company’s standard payment terms are 30 to 90 days from invoicing, the Company does not provide any significant financing to its customers.

Sales, value add, and other taxes collected on behalf of third parties are excluded from revenue.

Variable Consideration

Revenues from product sales are recorded at the net sales price (transaction price), which includes estimates of variable consideration for which reserves are established for discounts, returns, rebates and allowances that are offered within contracts between the Company and its customers. These reserves are based on the amounts earned or to be claimed on the related sales and are classified as a current liability.

Rebates and Allowances: The Company provides certain customers with rebates and allowances that are explicitly stated in the Company’s contracts and are recorded as a reduction of revenue in the period the related product revenue is recognized. The Company establishes a liability for such amounts, which is included in accrued expenses in the accompanying Consolidated Balance Sheets. These rebates and allowances result from performance-based offers that are primarily based on attaining contractually specified sales volumes and administrative fees the Company is required to pay to group purchasing organizations.

Product Returns: The Company generally offers customers a limited right of return. Product returns after 30 days must be pre-approved by the Company and customers may be subject to a 20% restocking charge. To be accepted, a returned product must be unadulterated, undamaged and have at least twelve months remaining prior to its expiration date. The Company estimates the amount of its product sales that may be returned by its customers and records this estimate as a reduction of revenue in the period the related product revenue is recognized. The Company currently estimates product return liabilities using its historical product return information and considers other factors that it believes could significantly impact its expected returns, including product recalls. During the six months ended November 30, 2019, such product returns were not material.

Contract Balances with Customers

A receivable is recognized in the period the Company ships the product. Payment terms on invoiced amounts are based on contractual terms with each customer and generally coincide with revenue recognition. Accordingly, the Company does not have any contract assets associated with the future right to invoice its customers. In some cases, if control of the product has not yet transferred to the customer or the timing of the payments made by the customer precedes the Company’s fulfillment of the performance obligation, the Company recognizes a contract liability that is included in deferred revenue in the accompanying Consolidated Balance Sheets.

The following table presents changes in the Company’s receivables, contract assets and contract liabilities with customers:



(in thousands)	Nov 30, 2019		May 31, 2019
Receivables	$	33,994	$	43,577
Contract assets	$	—	$	—
Contract liabilities	$	465	$	681

During the six months ended November 30, 2019, the Company recognized $0.6 million in revenue that was included in contract liabilities as of the beginning of the period. This was offset by additions to contract liabilities of $0.3 million.

Costs to Obtain or Fulfill a Customer Contract

Under ASC 606, the Company recognizes an asset for incremental costs of obtaining a contract with a customer if it expects to recover those costs. The Company’s sales incentive compensation plans qualify for capitalization since these plans are directly related to sales achieved during a period of time. However, the Company has elected the practical expedient under ASC 340-40-25-4 to expense the costs as they are incurred within selling and marketing expenses since the amortization period is less than one year.

The Company accounts for shipping and handling activities related to contracts with customers as costs to fulfill the promise to transfer the associated products. Shipping and handling costs, associated with the distribution of finished products to customers, are recorded in costs of goods sold and are recognized when the related finished product is shipped to the customer. Amounts charged to customers for shipping are recorded in net sales.

Goodwill and Intangible Assets

6 Months Ended

Nov. 30, 2019

Goodwill and Intangible Assets Disclosure [Abstract]

Goodwill and Intangible Assets

GOODWILL AND INTANGIBLE ASSETS

Intangible assets other than goodwill are amortized over their estimated useful lives on either a straight-line basis or proportionately to the benefit being realized. Useful lives range from two to eighteen years. The Company periodically reviews the estimated useful lives of its intangible assets and reviews such assets or asset groups for impairment whenever events or changes in circumstances indicate that the carrying value of the assets or asset groups may not be recoverable. If an intangible asset or asset group is considered to be impaired, the amount of the impairment will equal the excess of the carrying value over the fair value of the asset.

Goodwill is not amortized, but rather, is tested for impairment annually or more frequently if impairment indicators arise. Goodwill represents the excess of the purchase price over the fair value of the net tangible and identifiable intangible assets acquired in each business combination.

The Company's annual testing for impairment of goodwill was completed as of December 31, 2018. The Company operates as a single operating segment with one reporting unit and consequently evaluates goodwill for impairment based on an evaluation of the fair value of the Company as a whole. The Company determines the fair value of the reporting unit based on the market valuation approach and concluded that it was not more-likely-than-not that the fair value of the Company's reporting unit was less than its carrying value.

Even though the Company determined that there was no goodwill impairment as of December 31, 2018, the future occurrence of a potential indicator of impairment, such as a significant adverse change in legal, regulatory, business or economic conditions or a more-likely-than-not expectation that the reporting unit or a significant portion of the reporting unit will be sold or disposed of, would require an interim assessment for the reporting unit prior to the next required annual assessment as of December 31, 2019.

The changes in the carrying amount of goodwill for the six months ended November 30, 2019 were as follows:



(in thousands)
Goodwill balance at May 31, 2019	$	347,666
Additions for Eximo acquisition (Note 2)	12,428
Goodwill balance at November 30, 2019	$	360,094

Intangible assets consisted of the following:



	Nov 30, 2019
(in thousands)	Gross carrying value		Accumulated amortization			Net carrying value
Product technologies	$	241,973	$	(81,314	)	$	160,659
Customer relationships	60,148		(28,000		)	32,148
Trademarks	9,300		(6,536		)	2,764
Licenses	6,087		(5,333		)	754
	$	317,508	$	(121,183	)	$	196,325



	May 31, 2019
(in thousands)	Gross carrying value		Accumulated amortization			Net carrying value
Product technologies	$	182,971	$	(75,412	)	$	107,559
Customer relationships	60,166		(25,950		)	34,216
Trademarks	9,300		(6,404		)	2,896
Licenses	5,752		(5,036		)	716
	$	258,189	$	(112,802	)	$	145,387

Amortization expense for the three months ended November 30, 2019 and 2018 was $4.5 million and $4.5 million, respectively. Amortization expense for the six months ended November 30, 2019 and 2018 was $8.4 million and $7.9 million, respectively.

Expected future amortization expense related to the intangible assets is as follows:



(in thousands)
Remainder of 2020	$	9,510
2021	17,963
2022	17,347
2023	17,309
2024	15,755
2025 and thereafter	118,441
	$	196,325

Long Term Debt

6 Months Ended

Nov. 30, 2019

Debt Disclosure [Abstract]

Long Term Debt

LONG TERM DEBT

On June 3, 2019 and in connection with the completion of the Fluid Management divestiture, the Company repaid all amounts outstanding under its existing Credit Agreement and entered into a new Credit Agreement with the lenders party thereto, JPMorgan Chase Bank, N.A., as administrative agent, and Bank of America, N.A. and KeyBank National Association, as co-syndication agents.

The Credit Agreement provides for a $125.0 million secured revolving credit facility (the “Revolving Facility”), which includes an uncommitted expansion feature that allows the Company to increase the total revolving commitments and/or add new tranches of term loans in an aggregate amount not to exceed $75.0 million. The proceeds may be used to refinance certain existing indebtedness of the Company and its subsidiaries, to finance the working capital needs, and for general corporate purposes (including permitted acquisitions), of the Company and its subsidiaries.

The Credit Agreement has a five year maturity. Interest on the facility will be based, at the Company’s option, on a base rate of LIBOR plus an applicable margin tied to the Company’s total leverage ratio and having ranges between 0.25% and 0.75% for base rate loans and between 1.25% and 1.75% for LIBOR loans. After default, the interest rate may be increased by 2.0%. The facility will also carry a commitment fee of 0.20% to 0.25% per annum on the unused portion.

The Company's obligations under the Revolving Facility are unconditionally guaranteed, jointly and severally, by the Company's material direct and indirect domestic subsidiaries (the “Guarantors”). All obligations of the Company and the Guarantors under the Revolving Facility are secured by first priority security interests in substantially all of the assets of the Company and the Guarantors.

The Credit Agreement includes customary representations, warranties and covenants, and acceleration, indemnity and events of default provisions, including, among other things, two quarterly financial covenants as follows:


•	maximum leverage ratio of consolidated total indebtedness* to consolidated EBITDA* of not greater than 3.00 to 1.00 (during certain periods following material acquisitions the ratio shall be increased to 3.50 to 1.00).


•	fixed charge coverage ratio of consolidated EBITDA minus consolidated capital expenditures to consolidated interest expense paid or payable in cash plus scheduled principal payments in respect of indebtedness under the Credit Agreement of not less than 1.25 to 1.00.

* The definitions of consolidated total indebtedness and consolidated EBITDA are maintained in the credit agreement included as an exhibit to Form 8-k filed on June 6, 2019.

The Company was in compliance with the Credit Agreement covenants as of November 30, 2019.

As of November 30, 2019, there was no outstanding balance on the Revolving Facility. As of May 31, 2019, the carrying value of long-term debt approximated its fair market value.

Income Taxes	6 Months Ended
Income Taxes	Nov. 30, 2019
Income Tax Disclosure [Abstract]
Income Taxes	INCOME TAXES The Company provides for income taxes at the end of each interim period based on the estimated effective tax rate for the full fiscal year adjusted for any discrete events, which are recorded in the period that they occur. The estimated annual effective tax rate prior to discrete items was 13.2% in the second quarter of fiscal 2020, as compared to 13.2% for the same period in fiscal 2019. In fiscal 2020, the Company’s effective tax rate differs from the U.S. statutory rate primarily due to the impact of the valuation allowance, foreign taxes, and other non-deductible permanent items (such as non-deductible meals and entertainment, Section 162(m) excess compensation and non-deductible stock based compensation). The Company regularly assesses its ability to realize its deferred tax assets. Assessing the realization of deferred tax assets requires significant management judgment. In determining whether its deferred tax assets are more likely than not realizable, the Company evaluated all available positive and negative evidence, and weighted the evidence based on its objectivity. Evidence that the Company considered included its history of net operating losses, which resulted in the Company recording a full valuation allowance for its deferred tax assets in fiscal 2016, except the naked credit deferred tax liability. Based on the review of all available evidence, the Company determined that it has not yet attained a sustained level of profitability and the objectively verifiable negative evidence outweighed the positive evidence. Therefore, the Company has provided a valuation allowance on its federal and state net operating loss carryforwards, federal and state R&D credit carryforwards and other net deferred tax assets that have a limited life and are not supportable by the naked credit deferred tax liability sourced income as of November 30, 2019. The Company will continue to assess the level of the valuation allowance required. If sufficient positive evidence exists in future periods to support a release of some or all of the valuation allowance, such a release would likely have a material impact on the Company’s results of operations.

Share-Based Compensation	6 Months Ended
Share-Based Compensation	Nov. 30, 2019
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Share-Based Compensation	SHARE-BASED COMPENSATION The Company has two stock-based compensation plans that provide for the issuance of up to approximately 11.3 million shares of common stock. The 2004 Stock and Incentive Award Plan (the "2004 Plan") provides for the grant of incentive options to the Company's employees and for the grant of non-statutory stock options, restricted stock, stock appreciation rights, performance units, performance shares and other incentive awards to the Company's employees, directors and other service providers. The Company also has an employee stock purchase plan. For the three months ended November 30, 2019 and 2018, share-based compensation expense was $2.2 million and $2.6 million, respectively. For the six months ended November 30, 2019 and 2018, share-based compensation expense was $4.2 million and $4.7 million, respectively. During the six months ended November 30, 2019 and 2018, the Company granted stock options and restricted stock units under the 2004 Plan to certain employees and members of the Board of Directors. Stock option awards are valued using the Black-Scholes option-pricing model and then amortized on a straight-line basis over the requisite service period of the award. Restricted stock unit awards are valued based on the closing trading value of the Company's shares on the date of grant and then amortized on a straight-line basis over the requisite service period of the award. During the six months ended November 30, 2019 and 2018, the Company granted performance share units under the 2004 Plan to certain employees. The awards may be earned by achieving relative performance levels over the three year requisite service period. The performance criteria are based on achieving certain performance targets and the total shareholder return ("TSR") of the Company's common stock relative to the TSR of the common stock of a pre-defined industry peer-group. The fair value of these awards are based on the closing trading value of the Company's shares on the date of grant and use a Monte Carlo simulation model. As of November 30, 2019, there was $16.3 million of unrecognized compensation expense related to share-based payment arrangements. These costs are expected to be recognized over a weighted-average period of approximately four years. The Company has sufficient shares to satisfy expected share-based payment arrangements.

Fair Value

6 Months Ended

Nov. 30, 2019

Fair Value Disclosures [Abstract]

Fair Value

FAIR VALUE

On a recurring basis, the Company measures certain financial assets and financial liabilities at fair value based upon quoted market prices, where available. Where quoted market prices or other observable inputs are not available, the Company applies valuation techniques to estimate fair value. FASB ASC Topic 820, Fair Value Measurements and Disclosures, establishes a three-level valuation hierarchy for disclosure of fair value measurements. The categorization of financial assets and financial liabilities within the valuation hierarchy is based upon the lowest level of input that is significant to the measurement of fair value. The three levels of the hierarchy are defined as follows:


•	Level 1 - Inputs to the valuation methodology are quoted market prices for identical assets or liabilities.


•	Level 2 - Inputs to the valuation methodology are other observable inputs, including quoted market prices for similar assets or liabilities and market-corroborated inputs.


•	Level 3 - Inputs to the valuation methodology are unobservable inputs based on management’s best estimate of inputs market participants would use in pricing the asset or liability at the measurement date, including assumptions about risk.

The Company's financial instruments include cash and cash equivalents, accounts receivable, accounts payable and contingent consideration. The carrying amount of cash and cash equivalents, accounts receivable, and accounts payable approximates fair value due to the immediate or short-term maturities. The Company's recurring fair value measurements using significant unobservable inputs (Level 3) relate to contingent consideration liabilities.

The following tables provide information by level for assets and liabilities that are measured at fair value on a recurring basis as of November 30, 2019 and May 31, 2019:



	Fair Value Measurements using inputs considered as:						Fair Value at Nov 30, 2019
(in thousands)	Level 1		Level 2		Level 3
Financial Liabilities
Contingent consideration for acquisition earn outs	$	—	$	—	$	26,875	$	26,875
Total Financial Liabilities	$	—	$	—	$	26,875	$	26,875

	Fair Value Measurements using inputs considered as:						Fair Value at May 31, 2019
(in thousands)	Level 1		Level 2		Level 3
Financial Liabilities
Contingent consideration for acquisition earn outs	$	—	$	—	$	13,486	$	13,486
Total Financial Liabilities	$	—	$	—	$	13,486	$	13,486

There were no transfers between Level 1, 2 and 3 for the three and six months ended November 30, 2019.

The table below presents the changes in fair value components of Level 3 instruments in the three and six months ended November 30, 2019:



	Three Months Ended Nov 30, 2019
(in thousands)	Fair Value Measurements Using Significant Unobservable Inputs (Level 3)
Balance, August 31, 2019	$	11,830
Total gains or losses (realized/unrealized):
Contingent consideration liability recorded as the result of the acquisitions (Note 2)	14,900
Change in present value of contingent consideration (1)	145
Balance, November 30, 2019	$	26,875



	Six Months Ended Nov 30, 2019
(in thousands)	Fair Value Measurements Using Significant Unobservable Inputs (Level 3)
Balance, May 31, 2019	$	13,486
Total gains or losses (realized/unrealized):
Contingent consideration liability recorded as the result of the acquisitions (Note 2)	14,900
Change in present value of contingent consideration (1)	(303		)
Contingent consideration payments	(1,208		)
Balance, November 30, 2019	$	26,875

(1) Change in the fair value of contingent consideration is included in earnings and comprised of changes in estimated earn out payments based on projections of Company performance and amortization of the present value discount.

Contingent Consideration for Acquisition Earn Outs

Some of the Company's business combinations involve the potential for the payment of future contingent consideration upon the achievement of certain product development milestones or various other performance conditions. Payment of the

additional consideration is generally contingent on the acquired company reaching certain performance milestones, including attaining specified revenue levels or product development targets. Contingent consideration is recorded at the estimated fair value of the contingent payments on the acquisition date. The fair value of the contingent consideration is remeasured at the estimated fair value at each reporting period with the change in fair value recognized as income or expense within change in fair value of contingent consideration in the Consolidated Statements of Operations.

The Company measures the initial liability and remeasures the liability on a recurring basis using Level 3 inputs as defined under authoritative guidance for fair value measurements. The fair value is determined using a discounted cash flow model applied to projected net sales, using probabilities of achieving projected net sales and projected payment dates. Projected net sales are based on the Company's internal projections and extensive analysis of the target market and the sales potential. Increases or decreases in any valuation inputs in isolation may result in a significantly lower or higher fair value measurement in the future.

The recurring Level 3 fair value measurements of the contingent consideration liabilities include the following significant unobservable inputs as of November 30, 2019:



(in thousands)	Fair Value		Valuation Technique	Unobservable Input	Range
Revenue based payments	$	23,537	Discounted cash flow	Discount rate	4% - 5%
				Probability of payment	66% - 100%
				Projected fiscal year of payment	2023 - 2029
Technical milestones	$	3,338	Estimated probability	Estimated probability	90%
				Projected year of payment	2020 - 2022
Total	$	26,875

At November 30, 2019, the range of estimated potential undiscounted future contingent consideration that the Company expects to pay as a result of all completed acquisitions is $34.0 million to $54.0 million. The milestones, including revenue projections and technical milestones, associated with the contingent consideration must be reached in future periods ranging from fiscal years 2020 to 2029 in order for the associated consideration to be paid.

- Definition

The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information.

+ References + Details

Leases Leases

6 Months Ended

Nov. 30, 2019

Leases [Abstract]

Leases

LEASES

Adoption of ASU No. 2016-02, Leases (Topic 842)

On June 1, 2019, the Company adopted ASU No. 2016-02 using the modified retrospective approach. This ASU increases transparency and comparability among organizations by recognizing lease assets and liabilities on the balance sheet and disclosing key information about leasing arrangements. Comparative periods prior to adoption have not been retrospectively adjusted.

The Company elected the three practical expedients that permit an entity to a) not reassess whether expired or existing contracts contain leases, b) not reassess lease classification for existing or expired leases, and c) not consider whether previously capitalized initial direct costs would be appropriate under the new standard. Further, the Company has elected to not recognize leases with terms of 12 months or less on the balance sheet, and elected to account for lease and non-lease components as a single component for certain classes of assets.

The adoption of this standard resulted in the recording of an additional lease asset and lease liability of approximately $5.6 million. The standard did not have a material impact on the Company's Consolidated Statement of Operations, Stockholders Equity or Cash Flows.

Leases

The Company determines if an arrangement is a lease at inception of the contract. The Company has operating leases for buildings, primarily for office space, R&D, manufacturing and warehousing.

Operating lease right-of-use (“ROU”) assets and operating lease liabilities are recognized based on the present value of the future minimum lease payments over the lease term at commencement date. Many of the lease agreements contain renewal or termination clauses that are factored into the determination of the lease term if it is reasonably certain that these options would be exercised. The Company recognizes lease expense for these leases on a straight-line basis over the lease term.

The following table presents supplemental balance sheet information related to our leases:



(in thousands)	Balance Sheet Location	Nov 30, 2019
Assets
Operating lease ROU asset	Other assets	$	4,603
Liabilities
Current operating lease liabilities	Other current liabilities	1,393
Non-current operating lease liabilities	Other long-term liabilities	3,191
Total lease liabilities		$	4,584

The interest rate implicit in lease agreements is typically not readily determinable, and as such the Company used the incremental borrowing rate based on the information available at commencement date in determining the present value of future payments. The incremental borrowing rate is defined as the interest the Company would pay to borrow on a collateralized basis, considering factors such as length of lease term. The following table presents the weighted average remaining lease term and discount rate:



	Nov 30, 2019
Weighted average remaining term (in years)	3.6
Weighted average discount rate	4.5	%

The following table presents the maturities of the lease liabilities:



(in thousands)	Nov 30, 2019
Remainder of 2020	$	736
2021	1,251
2022	1,118
2023	1,138
2024	576
2025 and thereafter	—
Total lease payments	$	4,819
Less: Imputed Interest	235
Total lease obligations	$	4,584
Less: Current portion of lease obligations	1,393
Long-term lease obligations	$	3,191

During the three and six months ended November 30, 2019, the Company recognized $0.9 million and $1.5 million of operating lease expense, respectively, which includes immaterial short-term leases. As of November 30, 2019, the expenses on the Consolidated Statement of Operations were classified as follows:



(in thousands)	Three Months Ended		Six Months Ended
Cost of sales	$	289	$	559
Research and development	203		196
Sales and marketing	100		198
General and administrative	312		591
	$	904	$	1,544

In addition to the total lease obligations presented in the table above, the Company has a 7-year building operating lease with undiscounted payment obligations of $6.5 million and a 2-year building operating lease with undiscounted payment obligations of $0.4 million that are expected to commence during fiscal year 2020.

Future annual payments under non-cancelable operating leases in the aggregate at May 31, 2019, are summarized as follows:



(in thousands)	May 31, 2019
2020	$	2,920
2021	2,338
2022	2,133
2023	2,131
2024 and thereafter	3,227
Total lease payments	$	12,749

The following table presents supplemental cash flow and other information related to our leases for the six months ended:



(in thousands)	Nov 30, 2019
Cash paid for amounts included in the measurement of lease liabilities
Operating cash flows from operating leases	$	563
ROU assets obtained in exchange for lease liabilities
Operating leases	—

Commitments and Contingencies	6 Months Ended
Commitments and Contingencies	Nov. 30, 2019
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	COMMITMENTS AND CONTINGENCIES Legal Proceedings The Company is involved in various legal proceedings, including commercial, intellectual property, product liability, and regulatory matters of a nature considered normal for its business. The Company accrues for amounts related to these matters if it is probable that a liability has been incurred, and an amount can be reasonably estimated. The Company discloses such matters when there is at least a reasonable possibility that a material loss may have been incurred. However, the Company cannot predict the outcome of any litigation or the potential for future litigation. C.R. Bard, Inc. v. AngioDynamics, Inc. On January 11, 2012, C.R. Bard, Inc. (“Bard”) filed a suit in the United States District Court of Utah claiming certain of the Company's implantable port products infringe on three U.S. patents held by Bard (the "Utah Action"). Bard’s complaint sought unspecified damages and other relief. The Company filed petitions for reexamination in the US Patent and Trademark Office ("USPTO") seeking to invalidate all three patents asserted by Bard in the litigation. The Company's petitions were granted and 40 of Bard's 41 patent claims were rejected and, following further proceedings, the Patent Office issued a Final Rejection of all 40 claims subject to reexamination. Thereafter, Bard filed appeals to the USPTO Board of Appeals and Interferences for all three reexaminations which were decided as follows: For US Patent No. 7,785,302), the rejections of six of the ten claims under reexamination were affirmed, but were reversed on four of the ten claims. For U.S. Patent No. 7,959,615 the rejections of eight of the ten claims under reexamination were affirmed but the rejections of the other two of the ten claims were reversed. In the third (issued on March 29 for U.S. Patent No. 7,947,022) the rejections of all twenty claims under reexamination were affirmed. Thereafter, Bard sought Rehearing in all three appeals and the Company sought Rehearing in the ‘302 and ‘615 appeals. The PTO denied all three Rehearing Requests, but modified its characterization of one prior art reference for the ‘302 and ‘022 decisions. Bard filed appeals to the Federal Circuit Court of Appeals in all three reexams and the Company Cross-Appealed for the ‘302 and the ‘615 reexams. Medcomp also filed an Amicus Brief in support of the Company on November 22, 2017. Meanwhile, on July 12, 2017 Bard assigned the asserted patents to Bard Peripheral Vascular, Inc. (“BPV”) which was added as co-Appellant before the Federal Circuit and as a co-Plaintiff in the Utah action. An oral hearing was held on September 5, 2018 and the Court rendered its decision on September 28, 2018, affirming that claims 1-5 and 10 of the ‘615 patent were invalid, but that claims 6-7 of the 615 patent and 1-4 of the 302 patent were valid over the prior art references considered in the Reexamination proceedings. The Federal Circuit also reversed the PTAB’s claim construction ruling and remanded for consideration of obviousness for the remaining claims under the new claim construction ruling and for further findings with respect to whether one of the asserted references qualified as a printed publication. On January 28, 2019, on remand, the USPTO reversed the rejections of the ‘302 claims 1-10, ‘022 claims 1-20 and ‘615 claims 8-9. The USPTO has since issued Inter Partes Reexamination Certificates for the ‘302 Patent for the ‘022 patent and for the ‘615 patent. The Company thereafter filed a Motion to Unstay the Utah Case and that motion was granted. On November 4, 2019 the Court held a joint Status Conference among the Company’s Utah Action and two other cases filed by Bard on the same patents against Medcomp and Smiths. The Court set a schedule for Motions to Dismiss or Transfer. The Company filed its motion on November 25, 2019; and Bard filed a responsive brief and a motion for venue discovery on December 9, 2019. The Company filed a responsive brief on December 16, 2019 and Bard filed a reply on December 23, 2019. The Company believes these claims are without merit and intends to defend them vigorously. The Company has not recorded an expense related to the outcome of this litigation because it is not yet possible to determine if a potential loss is probable nor reasonably estimable. On March 10, 2015, Bard and BPV filed suit in the United States District Court for the District of Delaware (the “Delaware Action") claiming certain of the Company's implantable port products infringe on three other U.S. patents held by Bard, which are different from those asserted in the Utah action. Bard's complaint seeks unspecified damages and other relief. On June 1, 2015, the Company filed two motions in response to Bard’s Complaint - one sought transfer to the District of Utah where the Utah Action is currently pending, and the other sought dismissal of the entire complaint on grounds that none of the claims in the asserted patents is directed to patent eligible subject matter under Section 101 of the Patent Statute and in light of recent authority from the U. S. Supreme Court. On January 12, 2016, the Court issued a decision denying both motions. A Markman hearing was held on March 10, 2017 and the Court issued its Claim Construction Order on May 19, 2017. On May 19, 2017, Bard served its Final Infringement Contentions and on June 2, 2017, the Company served its Final Invalidity Contentions. On October 20, 2017, the scheduling order for the case was amended to, among other things, set a trial date commencing July 23, 2018. The parties completed Expert Discovery in January 2018 and completed briefing on their respective case dispositive motions on April 27, 2018. On June 26, 2018, the Court denied all case dispositive motions, ruling that issues of material fact remained in dispute. On July 9, 2018, the Court continued the trial until March 2019. On January 9, 2019 the Court held a further claim construction hearing to resolve two outstanding claim construction issues prior to trial. A Report and Recommendation (by Magistrate-Judge Fallon) was issued on February 11, 2019 and entered by the Court on February 28, 2019. Jury selection was held on Friday March 1, 2019 and trial began on March 4, 2019. On day four of the jury trial, at the close of C.R. Bard’s case, the Court granted the Company's oral motion for judgment as a matter of law under rule 50(a) as well as its motions for summary judgement on the grounds that the asserted patents are invalid, ineligible, not infringed and not willfully infringed. On April 5, 2019, Bard filed a precautionary Notice of Appeal to the Federal Circuit. On April 26, 2019, the District Court issued a Memorandum and Order confirming the grant of judgment in the Company’s favor of patent ineligibility, non-infringement, patent invalidity and no willful infringement. Meanwhile, on May 10, 2019, the Company filed a Motion for Attorney fees and non-taxable expenses under 35 USC Sec. 285. On May 21, 2019, the Court issued a Memorandum and Order which, inter alia, stayed proceedings on the Company’s fee Motion and the Company’s equitable claims pending appeal; and entered Final Judgment on May 21, 2019 as well. Bard filed a second Notice of Appeal on May 23, 2019. Both appeals have since been consolidated and Bard’s opening brief was served on September 27, 2019 and the Company's answering brief is currently due on January 15, 2020. The Company maintains its belief that Bard’s claims are without merit. The Company has not recorded an expense related to the outcome of this litigation because it is not yet possible to determine if a potential loss is probable nor reasonably estimable. AngioDynamics, Inc. v. C.R. Bard, Inc. On May 30, 2017, the Company commenced an action in the United States District Court for the Northern District of New York entitled AngioDynamics, Inc. v. C.R. Bard, Inc. and Bard Access Systems, Inc. (“Bard”). In this action, the Company alleges that Bard has illegally tied the sales of its tip location systems to the sales of its PICCs. The Company alleges that this practice violates the federal antitrust laws and has had, and continues to have, an anti-competitive effect in the market for PICCs. The Company seeks both monetary damages and injunctive relief. Bard moved to dismiss on September 8, 2017. On August 6, 2018 the court denied Bard’s motion in its entirety. The parties are currently engaged in discovery, which is set to close in March 2020. Merz North America Settlement On May 16, 2019, Merz North America, Inc. (“Merz”) commenced an action in the United States District Court for the Southern District of New York entitled Merz North America, Inc. v. AngioDynamics, Inc. In this action, Merz alleged breach of contract against AngioDynamics based on a March 1, 2016 Distribution Agreement. On June 28, 2019, AngioDynamics reached a settlement with Merz. AngioDynamics made a lump-sum payment of $2.5 million to Merz in return for dismissal of the case with prejudice during the first quarter. Merz filed a stipulation of dismissal with the Court on July 23, 2019.

Acquisition, Restructuring and Other Items, Net

6 Months Ended

Nov. 30, 2019

Restructuring and Related Activities [Abstract]

Acquisition, Restructuring and Other Items, Net

ACQUISITION, RESTRUCTURING, AND OTHER ITEMS, NET

Acquisition, Restructuring and Other Items

For the three and six months ended November 30, 2019 and 2018 acquisition, restructuring and other items, net consisted of:



	Three months ended					Six months ended
(in thousands)	Nov 30, 2019			Nov 30, 2018		Nov 30, 2019			Nov 30, 2018
Legal (1)	$	684		$	867	$	1,353		$	3,747
Mergers and acquisitions (2)	382			1,543		628			2,862
Transition service agreement (3)	(597		)	—		(1,334		)	—
Divestiture (4)	701			—		1,459			—
Restructuring	—			128		26			258
Other	251			190		789			283
Total	$	1,421		$	2,728	$	2,921		$	7,150

(1) Legal expenses related to litigation that is outside the normal course of business.

(2) Mergers and acquisitions expenses related to investment banking, legal and due diligence.

(3) Transition services agreement that was entered into as a result of the sale of the Fluid Management business.

(4) Divestiture expenses incurred to transition manufacturing from Glens Falls, NY to Queensbury, NY.

Included in the $1.4 million in legal for the six months ended November 30, 2019 is a $0.4 million settlement received for the Biolitec bankruptcy litigation. The settlement received offsets legal expenses paid related to the settlement proceedings.

Restructuring

The Company evaluates its performance and looks for opportunities to improve the overall operations of the Company on an ongoing basis. As a result of this evaluation, certain restructuring initiatives are taken to enhance the Company’s overall operations.

Operational Consolidation

On February 1, 2017, the Company announced to employees an operational consolidation plan (the “plan”) to consolidate its manufacturing facilities in Manchester, GA and Denmead, UK into the Glens Falls and Queensbury, NY facilities. This plan will streamline and optimize the manufacturing functions into one centralized location increasing the utilization of the Glens Falls and Queensbury facilities, optimizing inventory and reducing cost of goods sold through savings in overhead expenses and direct labor. The restructuring activities associated with the plan were completed in the fourth quarter of fiscal year 2018 with immaterial regulatory filing costs incurred through August 31, 2019.

Recently Issued Accounting Pronouncements (Policies)

6 Months Ended

Nov. 30, 2019

Accounting Changes and Error Corrections [Abstract]

Revenue from Contracts with Customers

Costs to Obtain or Fulfill a Customer Contract

Revenue Recognition

Sales, value add, and other taxes collected on behalf of third parties are excluded from revenue.

Variable Consideration

Recently Issued Accounting Pronouncements

RECENTLY ISSUED ACCOUNTING PRONOUNCEMENTS

The following table provides a description of recent accounting pronouncements that may have a material effect on the Company's consolidated financial statements:



Recently Issued Accounting Pronouncements - Adopted
Standard	Description	Date Adopted	Effect on the Consolidated Financial Statements
ASU 2016-02, Leases (Topic 842)	This ASU increases transparency and comparability among organizations by recognizing lease assets and liabilities on the balance sheet and disclosing key information about leasing arrangements. For leases with a term of twelve months or less, a lessee is permitted to make an accounting policy election by class of underlying asset not to recognize lease assets and liabilities.	June 1, 2019	Refer to Note 14, Leases, for the required disclosures related to adopting this standard.



Recently Issued Accounting Pronouncements - Not Yet Applicable or Adopted
Standard	Description	Effective Date	Effect on the Consolidated Financial Statements
ASU 2018-13, Fair Value Measurement (Topic 820)	This ASU removes, modifies and adds various disclosure requirements related to fair value disclosures. Disclosures related to transfers between fair value hierarchy levels will be removed and further detail around changes in unrealized gains and losses for the period and unobservable inputs used in determining level 3 fair value measurements will be added, among other changes.	June 1, 2020	The Company is currently assessing the impact of this standard on the consolidated financial statements.
ASU 2016-13, Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments	This ASU replaces the current incurred loss impairment methodology for financial assets measured at amortized cost with a methodology that reflects expected credit losses and requires consideration of a broader range of reasonable and supportable information, including forecasted information, to develop credit loss estimates.	June 1, 2020	The Company is currently assessing the impact of this standard on the consolidated financial statements.

Divestitures (Tables)

6 Months Ended

Nov. 30, 2019

Discontinued Operations and Disposal Groups [Abstract]

Results of Discontinued Operations

The following table summarizes the financial results of our discontinued operations:



	Three Months Ended		Six Months Ended
(in thousands)	Nov 30, 2018		Nov 30, 2018
Net sales	$	21,518	$	42,915
Cost of sales (exclusive of amortization)	12,962		25,844
Gross profit	8,556		17,071
Operating expenses
Research and development	287		575
Sales and marketing	1,005		2,033
General and administrative	73		135
Amortization of intangibles	683		1,365
Total operating expenses	2,048		4,108
Operating income	6,508		12,963

Income from discontinued operations before income taxes	6,508		12,963
Income tax expense	781		2,001
Income from discontinued operations	$	5,727	$	10,962

Total operating and investing cash flows of discontinued operations for the six months ended November 30, 2018 is comprised of the following, which excludes the effect of income taxes:



	Six Months Ended
(in thousands)	Nov 30, 2018
Net cash provided by operating activities	$	516
Net cash provided by investing activities	446

- Definition

Tabular disclosure of information related to a disposal group. Includes, but is not limited to, a discontinued operation, disposal classified as held-for-sale or disposed of by means other than sale or disposal of an individually significant component.

+ References

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Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
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Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef
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Reference 8: http://fasb.org/us-gaap/role/ref/legacyRef
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Reference 9: http://fasb.org/us-gaap/role/ref/legacyRef
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Reference 10: http://fasb.org/us-gaap/role/ref/legacyRef
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Reference 11: http://fasb.org/us-gaap/role/ref/legacyRef
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Reference 12: http://fasb.org/us-gaap/role/ref/legacyRef
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+ Details

Goodwill and Intangible Assets (Tables)

6 Months Ended

Nov. 30, 2019

Goodwill and Intangible Assets Disclosure [Abstract]

Changes in Goodwill

The changes in the carrying amount of goodwill for the six months ended November 30, 2019 were as follows:



(in thousands)
Goodwill balance at May 31, 2019	$	347,666
Additions for Eximo acquisition (Note 2)	12,428
Goodwill balance at November 30, 2019	$	360,094

Intangible Assets

Intangible assets consisted of the following:



	Nov 30, 2019
(in thousands)	Gross carrying value		Accumulated amortization			Net carrying value
Product technologies	$	241,973	$	(81,314	)	$	160,659
Customer relationships	60,148		(28,000		)	32,148
Trademarks	9,300		(6,536		)	2,764
Licenses	6,087		(5,333		)	754
	$	317,508	$	(121,183	)	$	196,325



	May 31, 2019
(in thousands)	Gross carrying value		Accumulated amortization			Net carrying value
Product technologies	$	182,971	$	(75,412	)	$	107,559
Customer relationships	60,166		(25,950		)	34,216
Trademarks	9,300		(6,404		)	2,896
Licenses	5,752		(5,036		)	716
	$	258,189	$	(112,802	)	$	145,387

Schedule of Future Amortization Expense

Expected future amortization expense related to the intangible assets is as follows:



(in thousands)
Remainder of 2020	$	9,510
2021	17,963
2022	17,347
2023	17,309
2024	15,755
2025 and thereafter	118,441
	$	196,325

Fair Value (Tables)

6 Months Ended

Nov. 30, 2019

Fair Value Disclosures [Abstract]

Fair Value of Assets and Liabilities Measured on a Recurring Basis

The following tables provide information by level for assets and liabilities that are measured at fair value on a recurring basis as of November 30, 2019 and May 31, 2019:



	Fair Value Measurements using inputs considered as:						Fair Value at Nov 30, 2019
(in thousands)	Level 1		Level 2		Level 3
Financial Liabilities
Contingent consideration for acquisition earn outs	$	—	$	—	$	26,875	$	26,875
Total Financial Liabilities	$	—	$	—	$	26,875	$	26,875

	Fair Value Measurements using inputs considered as:						Fair Value at May 31, 2019
(in thousands)	Level 1		Level 2		Level 3
Financial Liabilities
Contingent consideration for acquisition earn outs	$	—	$	—	$	13,486	$	13,486
Total Financial Liabilities	$	—	$	—	$	13,486	$	13,486

Fair Value Measurements Using Significant Unobservable Inputs

The table below presents the changes in fair value components of Level 3 instruments in the three and six months ended November 30, 2019:



	Three Months Ended Nov 30, 2019
(in thousands)	Fair Value Measurements Using Significant Unobservable Inputs (Level 3)
Balance, August 31, 2019	$	11,830
Total gains or losses (realized/unrealized):
Contingent consideration liability recorded as the result of the acquisitions (Note 2)	14,900
Change in present value of contingent consideration (1)	145
Balance, November 30, 2019	$	26,875



	Six Months Ended Nov 30, 2019
(in thousands)	Fair Value Measurements Using Significant Unobservable Inputs (Level 3)
Balance, May 31, 2019	$	13,486
Total gains or losses (realized/unrealized):
Contingent consideration liability recorded as the result of the acquisitions (Note 2)	14,900
Change in present value of contingent consideration (1)	(303		)
Contingent consideration payments	(1,208		)
Balance, November 30, 2019	$	26,875

Summary Showing the Recurring Fair Value Measurements of the Contingent Consideration Liability

The recurring Level 3 fair value measurements of the contingent consideration liabilities include the following significant unobservable inputs as of November 30, 2019:



(in thousands)	Fair Value		Valuation Technique	Unobservable Input	Range
Revenue based payments	$	23,537	Discounted cash flow	Discount rate	4% - 5%
				Probability of payment	66% - 100%
				Projected fiscal year of payment	2023 - 2029
Technical milestones	$	3,338	Estimated probability	Estimated probability	90%
				Projected year of payment	2020 - 2022
Total	$	26,875

Leases (Tables)

6 Months Ended

Nov. 30, 2019

Leases [Abstract]

Supplemental balance sheet information

The following table presents the weighted average remaining lease term and discount rate:



	Nov 30, 2019
Weighted average remaining term (in years)	3.6
Weighted average discount rate	4.5	%

The following table presents supplemental balance sheet information related to our leases:



(in thousands)	Balance Sheet Location	Nov 30, 2019
Assets
Operating lease ROU asset	Other assets	$	4,603
Liabilities
Current operating lease liabilities	Other current liabilities	1,393
Non-current operating lease liabilities	Other long-term liabilities	3,191
Total lease liabilities		$	4,584

Lease liability schedule

The following table presents the maturities of the lease liabilities:



(in thousands)	Nov 30, 2019
Remainder of 2020	$	736
2021	1,251
2022	1,118
2023	1,138
2024	576
2025 and thereafter	—
Total lease payments	$	4,819
Less: Imputed Interest	235
Total lease obligations	$	4,584
Less: Current portion of lease obligations	1,393
Long-term lease obligations	$	3,191

Lease liability schedule as of prior year end

Future annual payments under non-cancelable operating leases in the aggregate at May 31, 2019, are summarized as follows:



(in thousands)	May 31, 2019
2020	$	2,920
2021	2,338
2022	2,133
2023	2,131
2024 and thereafter	3,227
Total lease payments	$	12,749

Supplemental cash flow information

As of November 30, 2019, the expenses on the Consolidated Statement of Operations were classified as follows:



(in thousands)	Three Months Ended		Six Months Ended
Cost of sales	$	289	$	559
Research and development	203		196
Sales and marketing	100		198
General and administrative	312		591
	$	904	$	1,544

The following table presents supplemental cash flow and other information related to our leases for the six months ended:



(in thousands)	Nov 30, 2019
Cash paid for amounts included in the measurement of lease liabilities
Operating cash flows from operating leases	$	563
ROU assets obtained in exchange for lease liabilities
Operating leases	—

Acquisitions - Narrative (Details) - USD ($) $ in Thousands				6 Months Ended	12 Months Ended
Acquisitions - Narrative (Details) - USD ($) $ in Thousands	Oct. 02, 2019	Sep. 21, 2018	Aug. 14, 2018	Nov. 30, 2019	May 31, 2019
Business Acquisition [Line Items]
Contingent consideration, liabilities				$ 26,875	$ 13,486
Other long-term liabilities				3,492	521
Accrued liabilities				$ 28,478	38,338
Minimum
Business Acquisition [Line Items]
Useful life				2 years
Maximum
Business Acquisition [Line Items]
Useful life				18 years
Eximo Medical, Ltd.
Business Acquisition [Line Items]
Aggregate purchase price	$ 60,700
Payments to acquire business	45,800
Contingent consideration, liabilities	$ 14,900
RadiaDyne
Business Acquisition [Line Items]
Aggregate purchase price		$ 75,000
Payments to acquire business		47,900
Contingent consideration, liabilities		22,300
Other long-term liabilities		4,600		$ 4,600
Accrued liabilities		$ 200
Acquisition related costs				$ 600	1,600
RadiaDyne \| Customer relationships
Business Acquisition [Line Items]
Useful life		15 years
RadiaDyne \| Minimum \| Trademark
Business Acquisition [Line Items]
Useful life		5 years
RadiaDyne \| Minimum \| Product technology
Business Acquisition [Line Items]
Useful life		7 years
RadiaDyne \| Maximum \| Trademark
Business Acquisition [Line Items]
Useful life		7 years
RadiaDyne \| Maximum \| Product technology
Business Acquisition [Line Items]
Useful life		10 years
RadiaDyne \| Revenue milestones
Business Acquisition [Line Items]
Contingent consideration, liabilities		$ 16,500
RadiaDyne \| Technical milestones
Business Acquisition [Line Items]
Contingent consideration, liabilities		$ 5,800
BioSentry
Business Acquisition [Line Items]
Aggregate purchase price			$ 39,800
Payments to acquire business			37,000
Contingent consideration, liabilities			$ 2,800
Acquisition related costs					$ 1,000
BioSentry \| Trademark
Business Acquisition [Line Items]
Useful life			15 years
BioSentry \| Customer relationships
Business Acquisition [Line Items]
Useful life			10 years

Acquisitions (Details) - USD ($) $ in Thousands	Nov. 30, 2019	Oct. 02, 2019	May 31, 2019
Assets acquired
Goodwill	$ 360,094		$ 347,666
Eximo Medical, Ltd.
Assets acquired
Receivables		$ 50
Inventory		150
Prepaid and other current assets		54
Long-term deposits		51
Property, plant and equipment		397
Goodwill		12,428
Total assets acquired		72,130
Liabilities assumed
Accounts payable		84
Other current liabilities		615
Deferred tax liabilities		10,771
Total liabilities assumed		11,470
Net assets acquired		60,660
Eximo Medical, Ltd. \| Product technology
Assets acquired
Intangible assets		$ 59,000
RadiaDyne
Assets acquired
Receivables			900
Inventory			732
Prepaid and other current assets			98
Property, plant and equipment			133
Goodwill			47,982
Total assets acquired			75,445
Liabilities assumed
Accounts payable			352
Accrued expenses			106
Total liabilities assumed			458
Net assets acquired			74,987
RadiaDyne \| RadiaDyne trademark
Assets acquired
Intangible assets			400
RadiaDyne \| OarTrac trademark
Assets acquired
Intangible assets			200
RadiaDyne \| RadiaDyne legacy product technology
Assets acquired
Intangible assets			1,500
RadiaDyne \| OarTrac product technology
Assets acquired
Intangible assets			18,900
RadiaDyne \| Customer relationships
Assets acquired
Intangible assets			4,600
BioSentry
Assets acquired
Inventory			50
Property, plant and equipment			10
Goodwill			13,740
Liabilities assumed
Net assets acquired			39,800
BioSentry \| Trademark
Assets acquired
Intangible assets			2,500
BioSentry \| Product technology
Assets acquired
Intangible assets			20,900
BioSentry \| Customer relationships
Assets acquired
Intangible assets			$ 2,600

Divestitures (Details) $ in Millions	3 Months Ended
Divestitures (Details) $ in Millions	May 31, 2019 USD ($)
NAMIC Fluid Management Business \| Discontinued Operations, Disposed of by Sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Consideration received	$ 169.2
Gain on divestiture	46.6
Working capital adjustments	$ 0.6
Medline
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Service period duration (months)	24 months

Divestitures - Results of Discontinued Operations (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Nov. 30, 2019	Nov. 30, 2018	Nov. 30, 2019	Nov. 30, 2018
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Income from discontinued operations	$ 0	$ 5,727	$ 0	$ 10,962
NAMIC Fluid Management Business \| Discontinued Operations, Disposed of by Sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net sales	21,518		42,915
Cost of sales (exclusive of amortization)	12,962		25,844
Gross profit	8,556		17,071
Research and development	287		575
Sales and marketing	1,005		2,033
General and administrative	73		135
Amortization of intangibles	683		1,365
Total operating expenses	2,048		4,108
Operating income	6,508		12,963
Income from discontinued operations before income taxes	6,508		12,963
Income tax expense	781		2,001
Income from discontinued operations	5,727		$ 10,962
Net cash provided by operating activities	516
Net cash provided by investing activities	$ 446

Revenue from Contracts with Customers - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Nov. 30, 2019	Nov. 30, 2018	Nov. 30, 2019	Nov. 30, 2018
Disaggregation of Revenue [Line Items]
Net sales	$ 70,003	$ 69,985	$ 136,045	$ 133,928
United States
Disaggregation of Revenue [Line Items]
Net sales	55,555	56,300	108,492	107,796
International
Disaggregation of Revenue [Line Items]
Net sales	14,448	13,685	27,553	26,132
Vascular Interventions & Therapies
Disaggregation of Revenue [Line Items]
Net sales	31,150	30,976	60,063	59,573
Vascular Interventions & Therapies \| United States
Disaggregation of Revenue [Line Items]
Net sales	27,601	27,243	53,277	53,093
Vascular Interventions & Therapies \| International
Disaggregation of Revenue [Line Items]
Net sales	3,549	3,733	6,786	6,480
Vascular Access
Disaggregation of Revenue [Line Items]
Net sales	22,784	23,723	45,943	47,513
Vascular Access \| United States
Disaggregation of Revenue [Line Items]
Net sales	18,563	20,081	37,847	40,528
Vascular Access \| International
Disaggregation of Revenue [Line Items]
Net sales	4,221	3,642	8,096	6,985
Oncology
Disaggregation of Revenue [Line Items]
Net sales	16,069	15,286	30,039	26,842
Oncology \| United States
Disaggregation of Revenue [Line Items]
Net sales	9,391	8,976	17,368	14,175
Oncology \| International
Disaggregation of Revenue [Line Items]
Net sales	$ 6,678	$ 6,310	$ 12,671	$ 12,667

Revenue from Contracts with Customers - Narrative (Details) $ in Millions	6 Months Ended
	Nov. 30, 2019 USD ($)
Disaggregation of Revenue [Line Items]
Days after purchase after which pre-approval is required for product return	30 days
Restocking charge (as percent)	20.00%
Minimum remaining period prior to product expiration	12 months
Revenue recognized from contract liability balances in respective periods	$ 0.6
Additions to contract liabilities	$ 0.3
Minimum
Disaggregation of Revenue [Line Items]
Payment term	30 days
Maximum
Disaggregation of Revenue [Line Items]
Payment term	90 days

Revenue from Contracts with Customers - Contract Balances with Customers (Details) - USD ($) $ in Thousands	Nov. 30, 2019	May 31, 2019
Revenue from Contract with Customer [Abstract]
Receivables	$ 33,994	$ 43,577
Contract assets	0	0
Contract liabilities	$ 465	$ 681

Inventories - Schedule of Inventories (Detail) - USD ($) $ in Thousands	Nov. 30, 2019	May 31, 2019
Inventory Disclosure [Abstract]
Raw materials	$ 19,092	$ 16,045
Work in process	10,541	6,786
Finished goods	20,606	17,240
Inventories	$ 50,239	$ 40,071

Inventories - Narrative (Detail) - USD ($) $ in Millions	6 Months Ended
Inventories - Narrative (Detail) - USD ($) $ in Millions	Nov. 30, 2019	May 31, 2019
Inventory [Line Items]
Inventory valuation reserves	$ 4.0	$ 4.2
Inventory write-down	0.7
Acculis Inventory
Inventory [Line Items]
Inventory valuation reserves	$ 0.3	$ 0.4

Goodwill and Intangible Assets - Narrative (Detail)		3 Months Ended		6 Months Ended
Goodwill and Intangible Assets - Narrative (Detail)	Dec. 31, 2018 USD ($)	Nov. 30, 2019 USD ($)	Nov. 30, 2018 USD ($)	Nov. 30, 2019 USD ($) segment	Nov. 30, 2018 USD ($)
Finite-Lived Intangible Assets [Line Items]
Number of reporting units \| segment				1
Goodwill impairment	$ 0
Amortization of intangibles		$ 4,530,000	$ 4,506,000	$ 8,398,000	$ 7,939,000
Minimum
Finite-Lived Intangible Assets [Line Items]
Estimated useful life of intangible assets other than goodwill				2 years
Maximum
Finite-Lived Intangible Assets [Line Items]
Estimated useful life of intangible assets other than goodwill				18 years

Goodwill and Intangible Assets - Intangible Assets (Detail) - USD ($) $ in Thousands	Nov. 30, 2019	May 31, 2019
Finite-Lived Intangible Assets [Line Items]
Gross carrying value, finite intangible items	$ 317,508	$ 258,189
Accumulated amortization	(121,183)	(112,802)
Net carrying value, finite intangible items	196,325	145,387
Product technologies
Finite-Lived Intangible Assets [Line Items]
Gross carrying value, finite intangible items	241,973	182,971
Accumulated amortization	(81,314)	(75,412)
Net carrying value, finite intangible items	160,659	107,559
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Gross carrying value, finite intangible items	60,148	60,166
Accumulated amortization	(28,000)	(25,950)
Net carrying value, finite intangible items	32,148	34,216
Trademarks
Finite-Lived Intangible Assets [Line Items]
Gross carrying value, finite intangible items	9,300	9,300
Accumulated amortization	(6,536)	(6,404)
Net carrying value, finite intangible items	2,764	2,896
Licenses
Finite-Lived Intangible Assets [Line Items]
Gross carrying value, finite intangible items	6,087	5,752
Accumulated amortization	(5,333)	(5,036)
Net carrying value, finite intangible items	$ 754	$ 716

Goodwill and Intangible Assets - Expected Future Amortization Expense (Detail) - USD ($) $ in Thousands	Nov. 30, 2019	May 31, 2019
Goodwill and Intangible Assets Disclosure [Abstract]
Remainder of 2020	$ 9,510
2021	17,963
2022	17,347
2023	17,309
2024	15,755
2025 and thereafter	118,441
Net carrying value, finite intangible items	$ 196,325	$ 145,387

Accrued Liabilities - Summary of Accrued Liabilities (Detail) - USD ($) $ in Thousands	Nov. 30, 2019	May 31, 2019
Other Liabilities Disclosure [Abstract]
Payroll and related expenses	$ 11,829	$ 14,987
Royalties	1,977	2,088
Accrued severance	597	504
Sales and franchise taxes	1,502	807
Outside services	2,084	3,514
Litigation matters	0	2,700
Indemnification holdback	4,926	4,807
Other	5,563	8,931
Total	$ 28,478	$ 38,338

Long Term Debt - Narrative (Detail) - Credit Facility - JPMorgan Chase Bank, N.A., Bank of America, N.A., Keybank National Association	Jun. 03, 2019 USD ($) covenant	Nov. 30, 2019 USD ($)
Debt Instrument [Line Items]
Debt default interest rate increase (percentage)	2.00%
Maximum total leverage ratio	3.00
Maximum total leverage ratio subsequent to material acquisitions	3.50
Minimum fixed charge coverage ratio	1.25
Revolving Credit Facility
Debt Instrument [Line Items]
Line of credit	$ 125,000,000.0
Line of credit accordion feature	$ 75,000,000.0
Debt instrument term (years)	5 years
Number of covenants \| covenant	2
Borrowings outstanding		$ 0
Minimum
Debt Instrument [Line Items]
Commitment fee (percentage)	0.20%
Minimum \| Base Rate \| Revolving Credit Facility
Debt Instrument [Line Items]
Basis spread on variable rate (percentage)	0.25%
Minimum \| London Interbank Offered Rate (LIBOR) \| Revolving Credit Facility
Debt Instrument [Line Items]
Basis spread on variable rate (percentage)	1.25%
Maximum
Debt Instrument [Line Items]
Commitment fee (percentage)	0.25%
Maximum \| Base Rate \| Revolving Credit Facility
Debt Instrument [Line Items]
Basis spread on variable rate (percentage)	0.75%
Maximum \| London Interbank Offered Rate (LIBOR) \| Revolving Credit Facility
Debt Instrument [Line Items]
Basis spread on variable rate (percentage)	1.75%

Share-Based Compensation - Narrative (Detail) - USD ($) shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Nov. 30, 2019	Nov. 30, 2018	Nov. 30, 2019	Nov. 30, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Charges against income for share-based payment arrangements	$ 2.2	$ 2.6	$ 4.2	$ 4.7
Unrecognized compensation expenses related to share-based payment arrangements	$ 16.3		$ 16.3
Recognition period			4 years
The 2004 Plan and Employee Stock Purchase Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Amount of shares issuable through two stock-based compensation plans	11.3		11.3
Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Recognition period			3 years

Earnings Per Share - Reconciliation of Basic to Diluted Weighted-Average Shares Outstanding (Detail) - shares shares in Thousands	3 Months Ended		6 Months Ended
	Nov. 30, 2019	Nov. 30, 2018	Nov. 30, 2019	Nov. 30, 2018
Earnings Per Share [Abstract]
Basic (shares)	37,992	37,500	37,887	37,411
Effect of dilutive securities (shares)	0	0	0	0
Diluted (shares)	37,992	37,500	37,887	37,411
Securities excluded as their inclusion would be anti-dilutive (shares)	2,694	2,384	2,689	2,354

Fair Value - Fair Value of Assets and Liabilities Measured on a Recurring Basis (Detail) - USD ($) $ in Thousands	Nov. 30, 2019	May 31, 2019
Financial Liabilities
Contingent consideration for acquisition earn outs	$ 26,875	$ 13,486
Recurring
Financial Liabilities
Total Financial Liabilities	26,875	13,486
Level 1 \| Recurring
Financial Liabilities
Contingent consideration for acquisition earn outs	0	0
Total Financial Liabilities	0	0
Level 2 \| Recurring
Financial Liabilities
Contingent consideration for acquisition earn outs	0	0
Total Financial Liabilities	0	0
Level 3 \| Recurring
Financial Liabilities
Contingent consideration for acquisition earn outs	26,875	13,486
Total Financial Liabilities	$ 26,875	$ 13,486

Fair Value - Fair Value Measurements Using Significant Unobservable Inputs (Detail) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Nov. 30, 2019	Nov. 30, 2019
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Financial liabilities, begining balance	$ 11,830	$ 13,486
Contingent consideration liability recorded as the result of the acquisitions (Note 2)	14,900	14,900
Change in present value of contingent consideration	145	(303)
Contingent consideration payments		(1,208)
Financial liabilities, ending balance	$ 26,875	$ 26,875

Fair Value - Summary Showing the Recurring Fair Value Measurements of the Contingent Consideration Liability (Detail) $ in Thousands	Nov. 30, 2019 USD ($)	May 31, 2019 USD ($)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Contingent consideration, liabilities	$ 26,875	$ 13,486
Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total Financial Liabilities	26,875	13,486
Level 3 \| Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Contingent consideration, liabilities	26,875	13,486
Total Financial Liabilities	26,875	$ 13,486
Revenue based payments \| Discounted cash flow \| Level 3 \| Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Contingent consideration, liabilities	23,537
Technical milestones \| Estimated probability \| Level 3 \| Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Contingent consideration, liabilities	$ 3,338
Contingent consideration, liability, measurement input	0.90
Minimum \| Revenue based payments \| Discount rate \| Discounted cash flow \| Level 3 \| Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Contingent consideration, liability, measurement input	0.04
Minimum \| Revenue based payments \| Probability of payment \| Discounted cash flow \| Level 3 \| Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Contingent consideration, liability, measurement input	0.66
Maximum \| Revenue based payments \| Discount rate \| Discounted cash flow \| Level 3 \| Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Contingent consideration, liability, measurement input	0.05
Maximum \| Revenue based payments \| Probability of payment \| Discounted cash flow \| Level 3 \| Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Contingent consideration, liability, measurement input	1.00
Contingent Consideration \| Level 3 \| Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total Financial Liabilities	$ 26,875

Leases (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Leases (Details) - USD ($) $ in Thousands	Nov. 30, 2019	Nov. 30, 2019	Jun. 01, 2019
Lessee, Lease, Description [Line Items]
Operating lease ROU asset	$ 4,603	$ 4,603
Total lease liabilities	4,584	4,584
Non-cash lease expense	$ 904	$ 1,544
Building \| Seven Year Building Lease
Lessee, Lease, Description [Line Items]
Lease term (years)	7 years	7 years
Lease payments	$ 6,500	$ 6,500
Building \| Two Year Building Lease
Lessee, Lease, Description [Line Items]
Lease term (years)	2 years	2 years
Lease payments	$ 400	$ 400
Accounting Standards Update 2016-02
Lessee, Lease, Description [Line Items]
Operating lease ROU asset			$ 5,600
Total lease liabilities			$ 5,600
Cost of sales
Lessee, Lease, Description [Line Items]
Non-cash lease expense	289	559
General and administrative
Lessee, Lease, Description [Line Items]
Non-cash lease expense	$ 312	$ 591

Leases - Supplemental Balance Sheet Information (Details) $ in Thousands	Nov. 30, 2019 USD ($)
Leases [Abstract]
Operating lease ROU asset	$ 4,603
Less: Current portion of lease obligations	1,393
Long-term lease obligations	3,191
Total lease obligations	$ 4,584
Weighted average remaining term (in years)	3 years 7 months 6 days
Weighted average discount rate (percent)	4.50%

Leases - Liability Maturity Schedule (Details) $ in Thousands	Nov. 30, 2019 USD ($)
Leases [Abstract]
Remainder of 2020	$ 736
2021	1,251
2022	1,118
2023	1,138
2024	576
2025 and thereafter	0
Total lease payments	4,819
Less: Imputed Interest	235
Total lease obligations	4,584
Less: Current portion of lease obligations	1,393
Long-term lease obligations	$ 3,191

Leases - Non-Cancelable Payments Schedule (Details) $ in Thousands	May 31, 2019 USD ($)
Leases [Abstract]
2020	$ 2,920
2021	2,338
2022	2,133
2023	2,131
2024 and thereafter	3,227
Total lease payments	$ 12,749

Commitments and Coontingencies - Additional Information (Detail)							10 Months Ended
	Mar. 07, 2019 patent	Mar. 29, 2016 claim	Mar. 24, 2016 claim	Mar. 11, 2016 claim	Jun. 01, 2015 motion	Jan. 11, 2012 reexamination_appeal claim Petition	Jan. 31, 2017 reexamination_appeal	Nov. 30, 2019 claim	Nov. 04, 2019 claim
C.R. Bard, Inc.
Loss Contingencies [Line Items]
Number of petitions filed for reexamination of patents \| Petition						3
The Utah Action
Loss Contingencies [Line Items]
Number of claims dismissed		20	8	6		40
Number of reexaminations \| reexamination_appeal						3
Number of pending claims			10	10		41
Number of claims reversed			2	4
The Utah Action \| C.R. Bard, Inc. \| Pending Litigation
Loss Contingencies [Line Items]
Number of reexaminations \| reexamination_appeal							3
MedComp and Smiths Patent Action \| C.R. Bard, Inc.
Loss Contingencies [Line Items]
Number of pending claims									2
The Delaware Action
Loss Contingencies [Line Items]
Number of patents allegedly infringed upon	3				2
Construction Issues
Loss Contingencies [Line Items]
Number of pending claims								2

Acquisition, Restructuring and Other Items, Net - Summary (Detail) - USD ($) $ in Thousands	3 Months Ended			6 Months Ended
	Nov. 30, 2019	Aug. 31, 2019	Nov. 30, 2018	Nov. 30, 2019	Nov. 30, 2018	May 31, 2019	Aug. 31, 2018	May 31, 2018
Restructuring Cost and Reserve [Line Items]
Stockholders' Equity Attributable to Parent	$ 613,810	$ 614,073	$ 549,563	$ 613,810	$ 549,563	$ 614,815	$ 544,889	$ 542,595
Acquisition, restructuring and other items, net	1,421		2,728	2,921	7,150
Other comprehensive income (loss), net of tax	231		(206)	80	(298)
Legal
Restructuring Cost and Reserve [Line Items]
Acquisition, restructuring and other items, net	684		867	1,353	3,747
Mergers and acquisitions
Restructuring Cost and Reserve [Line Items]
Acquisition, restructuring and other items, net	382		1,543	628	2,862
Transition service agreement
Restructuring Cost and Reserve [Line Items]
Acquisition, restructuring and other items, net	(597)		0	(1,334)	0
Divestiture
Restructuring Cost and Reserve [Line Items]
Acquisition, restructuring and other items, net	701		0	1,459	0
Restructuring
Restructuring Cost and Reserve [Line Items]
Acquisition, restructuring and other items, net	0		128	26	258
Other
Restructuring Cost and Reserve [Line Items]
Acquisition, restructuring and other items, net	251		$ 190	789	$ 283
Foreign currency translation loss
Restructuring Cost and Reserve [Line Items]
Stockholders' Equity Attributable to Parent	(1,272)	(1,503)		$ (1,272)		$ (1,352)
Other comprehensive income before reclassifications, net of tax	231	80
Amounts reclassified from accumulated other comprehensive loss	0	0
Other comprehensive income (loss), net of tax	$ 231	$ 80

Accumulated Other Comprehensive Income (Loss) - Schedule (Detail) - USD ($) $ in Thousands	3 Months Ended			6 Months Ended
	Nov. 30, 2019	Aug. 31, 2019	Nov. 30, 2018	Nov. 30, 2019	Nov. 30, 2018
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	$ 614,073	$ 614,815	$ 544,889	$ 614,815	$ 542,595
Other comprehensive income (loss), net of tax	231		(206)	80	(298)
Ending Balance	613,810	614,073	549,563	613,810	549,563
Accumulated other comprehensive income (loss)
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	(1,503)	(1,352)	(1,044)	(1,352)	(952)
Ending Balance	(1,272)	(1,503)	$ (1,250)	(1,272)	$ (1,250)
Foreign currency translation loss
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	(1,503)	(1,352)		(1,352)
Other comprehensive income before reclassifications, net of tax	231	80
Amounts reclassified from accumulated other comprehensive loss	0	0
Other comprehensive income (loss), net of tax	231	80
Ending Balance	$ (1,272)	$ (1,503)		$ (1,272)

Subsequent Events (Details) - Subsequent Event $ in Thousands	Dec. 17, 2019 USD ($)
JPMorgan Chase Bank, N.A., Bank of America, N.A., Keybank National Association \| Credit Facility \| Revolving Credit Facility
Subsequent Event [Line Items]
Proceeds from line of credit	$ 15,000
C3 Wave Tip Location Asset
Subsequent Event [Line Items]
Aggregate purchase price	10,000
Contingent consideration for acquisition earn outs	$ 5,000

Consolidated Financial Statements	6 Months Ended
Consolidated Financial Statements	Nov. 30, 2019
Accounting Policies [Abstract]
Consolidated Financial Statements	CONSOLIDATED FINANCIAL STATEMENTS The Consolidated Balance Sheet as of November 30, 2019, the Consolidated Statements of Operations and the Consolidated Statements of Comprehensive Income (Loss) for the three and six months ended November 30, 2019 and 2018, the Consolidated Statements of Stockholders’ Equity for the three months ended November 30, 2019 and 2018 and the Consolidated Statements of Cash Flows for the six months ended November 30, 2019 and 2018 have been prepared by us and are unaudited. The Consolidated Balance Sheet as of May 31, 2019 was derived from audited consolidated financial statements but does not include all disclosures required by accounting principles generally accepted in the United States of America. In the opinion of management, all adjustments (consisting of normal recurring adjustments) necessary to state fairly the financial position, changes in stockholders’ equity and comprehensive income, results of operations and cash flows as of and for the period ended November 30, 2019 (and for all periods presented) have been made. The unaudited interim consolidated financial statements for the three and six months ended November 30, 2019 and 2018 include the accounts of AngioDynamics, Inc. and its wholly owned subsidiaries, collectively, the “Company”. All intercompany balances and transactions have been eliminated. On May 31, 2019, the Company completed the sale of the Fluid Management business and all of the assets used primarily in connection with the Fluid Management business (Note 3). As the disposal of this business represents a strategic shift with a major effect on the Company's operations, for all periods presented in our Consolidated Statements of Operations and Comprehensive Loss, all sales, costs, expenses, gains and income taxes attributable to Fluid Management have been reported under the captions, “Income from Discontinued Operations, Net of Income Tax.” Cash flows used in or provided by Fluid Management have been reported in the Consolidated Statements of Cash Flows under operating and investing activities.

Subsequent Events	6 Months Ended
Subsequent Events	Nov. 30, 2019
Subsequent Events [Abstract]
Subsequent Events	SUBSEQUENT EVENTS On December 17, 2019, the Company acquired the C3 Wave tip location asset from Medical Components Inc. for an aggregate purchase price of $10.0 million with $5.0 million of potential future contingent consideration related to technical milestones. This acquisition fills a gap in the Vascular Access portfolio and supports the Company's strategic plan. In conjunction with the acquisition of the C3 Wave tip location asset from Medical Components Inc, on December 17, 2019, the Company made a $15.0 million draw on the revolving credit facility.

Income Taxes - Additional Information (Detail)	3 Months Ended
Income Taxes - Additional Information (Detail)	Nov. 30, 2019	Nov. 30, 2018
Income Tax Disclosure [Abstract]
Estimated federal statutory income tax rate	13.20%	13.20%

Fair Value - Additional Information (Detail) $ in Millions	Nov. 30, 2019 USD ($)
Minimum
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Potential amount of undiscounted future contingent consideration	$ 34.0
Maximum
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Potential amount of undiscounted future contingent consideration	$ 54.0

Goodwill and Intangible Assets - Goodwill Rollforward (Details) $ in Thousands	6 Months Ended
	Nov. 30, 2019 USD ($)
Goodwill [Roll Forward]
Goodwill balance at May 31, 2019	$ 347,666
Additions for Eximo acquisition (Note 2)	12,428
Goodwill balance at November 30, 2019	$ 360,094