Segment Reporting [Abstract] Schedule of Segment Reporting Information, by Segment [Table] Schedule of Segment Reporting Information, by Segment [Table] Products and Services [Axis] Products and Services [Axis] Products and Services [Domain] Products and Services [Domain] Peripheral Vascular [Member] Peripheral Vascular [Member] Peripheral Vascular. Vascular Access [Member] Vascular Access [Member] Vascular access. Oncology/Surgery [Member] Oncology Surgery [Member] Oncology Surgery. Supply Agreement [Member] Supply Agreement [Member] Supply Agreement [Member] Segment Reporting Information [Line Items] Segment Reporting Information [Line Items] Net sales Revenue, Net Income Tax Disclosure [Abstract] Income Taxes Income Tax Disclosure [Text Block] Disclosure of Compensation Related Costs, Share-based Payments [Abstract] Share-Based Compensation Disclosure of Compensation Related Costs, Share-based Payments [Text Block] Number of segment Number of Operating Segments Fair Value Disclosures [Abstract] Fair Value of Assets and Liabilities Measured on a Recurring Basis Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block] Fair Value Measurements Using Significant Unobservable Inputs Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block] Summary Showing the Recurring Fair Value Measurements of the Contingent Consideration Liability Fair Value, Liabilities Measured on Recurring Basis [Table Text Block] Earnings Per Share [Abstract] Reconciliation of Basic to Diluted Weighted-Average Shares Outstanding Schedule of Weighted Average Number of Shares [Table Text Block] Inventory Disclosure [Abstract] Raw materials Inventory, Raw Materials, Gross Work in process Inventory, Work in Process, Gross Finished goods Inventory, Finished Goods, Gross Inventories Inventory, Net Amount of shares issuable through two stock-based compensation plans Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized Charges against income for share-based payment arrangements Allocated Share-based Compensation Expense Unrecognized compensation expenses related to share-based payment arrangements Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized Summary of Net Sales by Product Category Schedule of Net Revenue by Product Group [Table Text Block] Schedule of net revenue by product group. Summary of Net Sales by Geographic Area Schedule of Revenue from External Customers and Long-Lived Assets, by Geographical Areas [Table Text Block] Income (loss) before income tax expense (benefit) Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Extraordinary Items, Noncontrolling Interest Non-taxable portion of change in fair value of contingent consideration Revaluation Of Non-taxable Portion Of Contingent Consideration Revaluation Of Non-taxable Portion Of Contingent Consideration Impairment of indefinite-lived intangible asset Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill) Ordinary income (loss) before income taxes Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Extraordinary Items, Noncontrolling Interest, Including Discrete Income Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Extraordinary Items, Noncontrolling Interest, Including Discrete Income Effective Income Tax Rate Reconciliation, Other Reconciling Items, Amount [Abstract] Effective Income Tax Rate Reconciliation, Other Reconciling Items, Amount [Abstract] Income tax expense / (benefit) based on ordinary income / (loss) at estimated tax rates Effective Income Tax Rate Reconciliation a Estimated Income Tax Rate Based on Ordinary Income Only Effective Income Tax Rate Reconciliation a Estimated Income Tax Rate Based on Ordinary Income Only Discrete tax expense (benefit): Discrete Tax Expense Benefit [Abstract] Discrete Tax Expense Benefit [Abstract] Adjustment for elimination of the ASC 718 APIC pool Effective Income Tax Reconciliation, Effect Of Elimination Of ASC 718 APIC Pool Effective Income Tax Reconciliation, Effect Of Elimination Of ASC 718 APIC Pool Adjustments to prior period tax liabilities Effective Income Tax Rate Reconciliation, Prior Year Income Taxes, Amount Total income tax expense (benefit) Income Tax Expense (Benefit) Operating Loss Carryforwards [Table] Operating Loss Carryforwards [Table] Tax Period [Axis] Tax Period [Axis] Tax Period [Domain] Tax Period [Domain] FY 2017 Tax Year 2017 [Member] Tax Year 2017 [Member] FY 2019 Tax Year 2019 [Member] Tax Year 2019 [Member] FY 2020 Tax Year 2020 [Member] Tax Year 2020 [Member] FY 2022 Tax Year 2022 [Member] Tax Year 2022 [Member] FY 2023 Tax Year 2023 [Member] Tax Year 2023 [Member] FY 2027 Tax Year 2027 [Member] Tax Year 2027 [Member] FY 2028 Tax Year 2028 [Member] Tax Year 2028 [Member] FY 2029 Tax Year 2029 [Member] Tax Year 2029 [Member] FY 2030 Tax Year 2030 [Member] Tax Year 2030 [Member] FY 2031 Tax Year 2031 [Member] Tax Year 2031 [Member] FY 2032 Tax Year 2032 [Member] Tax Year 2032 [Member] FY 2033 Tax Year 2033 [Member] Tax Year 2033 [Member] FY 2034 Tax Year 2034 [Member] Tax Year 2034 [Member] FY 2035 Tax Year 2035 [Member] Tax Year 2035 [Member] Operating Loss Carryforwards [Line Items] Operating Loss Carryforwards [Line Items] Loss carryforwards from acquisitions Operating Loss Carryforwards, Business Combination Operating Loss Carryforwards, Business Combination Income Tax Examination [Table] Income Tax Examination [Table] Income Tax Authority [Axis] Income Tax Authority [Axis] Income Tax Authority [Domain] Income Tax Authority [Domain] Domestic Tax Authority [Member] Domestic Tax Authority [Member] Income Tax Authority, Name [Axis] Income Tax Authority, Name [Axis] Income Tax Authority, Name [Domain] Income Tax Authority, Name [Domain] Range [Axis] Range [Axis] Range [Domain] Range [Domain] Income Tax Examination [Line Items] Income Tax Examination [Line Items] Estimated federal statutory income tax rate Effective Income Tax Rate Reconciliation Before Discreet Items, Percent Effective Income Tax Rate Reconciliation Before Discreet Items, Percent Federal statutory income tax rate Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent Net deferred tax asset Deferred Tax Assets, Net Operating Loss Carryforwards, Valuation Allowance Operating Loss Carryforwards, Valuation Allowance Accounting Changes and Error Corrections [Abstract] Recently Issued Accounting Pronouncements New Accounting Pronouncements and Changes in Accounting Principles [Text Block] Schedule of Revenues from External Customers and Long-Lived Assets [Table] Schedule of Revenues from External Customers and Long-Lived Assets [Table] Consolidation Items [Axis] Consolidation Items [Axis] Consolidation Items [Domain] Consolidation Items [Domain] Reportable Geographical Components [Member] Reportable Geographical Components [Member] Geographical [Axis] Geographical [Axis] Geographical [Domain] Geographical [Domain] United States [Member] UNITED STATES International [Member] Segment Geographical Groups Of Countries Group Other [Member] Segment Geographical Groups Of Countries Group Other [Member] Revenues from External Customers and Long-Lived Assets [Line Items] Revenues from External Customers and Long-Lived Assets [Line Items] Net Sales Segments, Geographical Areas [Abstract] Statement of Financial Position [Abstract] Accounts receivable, allowances Allowance for Doubtful Accounts Receivable, Current Preferred stock, par value Preferred Stock, Par or Stated Value Per Share Preferred stock, shares authorized Preferred Stock, Shares Authorized Preferred stock, shares issued Preferred Stock, Shares Issued Preferred stock, shares outstanding Preferred Stock, Shares Outstanding Common stock, par value Common Stock, Par or Stated Value Per Share Common stock, shares authorized Common Stock, Shares Authorized Common stock, shares issued Common Stock, Shares, Issued Common stock, shares outstanding Common Stock, Shares, Outstanding Treasury stock, shares Treasury Stock, Shares Marketable Securities [Abstract] Schedule of Available-for-sale Securities [Table] Schedule of Available-for-sale Securities [Table] Major Types of Debt and Equity Securities [Axis] Major Types of Debt and Equity Securities [Axis] Major Types of Debt and Equity Securities [Domain] Major Types of Debt and Equity Securities [Domain] U.S. Government Agency Obligations [Member] US Government Agencies Debt Securities [Member] Schedule of Available-for-sale Securities [Line Items] Schedule of Available-for-sale Securities [Line Items] Amortized cost Available-for-sale Debt Securities, Amortized Cost Basis Gross Unrealized Gains Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax Gross Unrealized Losses Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax Fair Value Available-for-sale Securities, Debt Securities, Current Goodwill and Intangible Assets Disclosure [Abstract] Goodwill and Intangible Assets Goodwill and Intangible Assets Disclosure [Text Block] Income Statement [Abstract] Cost of sales Cost of Goods Sold Gross profit Gross Profit Operating expenses Operating Expenses [Abstract] Research and development Research and Development Expense Sales and marketing Selling and Marketing Expense General and administrative General and Administrative Expense Amortization of intangibles Amortization of Intangible Assets Change in fair value of contingent consideration Change In Fair Value Of Contingent Consideration One Change In Fair Value Of Contingent Consideration Acquisition, restructuring and other items, net Acquisition Restructuring and Other Items Net Acquisition Restructuring And Other Items Net. Medical device excise tax Medical Device Excise Tax The amount of excise tax imposed on the sale of certain medical devices. Total operating expenses Operating Expenses Operating income Operating Income (Loss) Other (expenses) income Other Nonoperating Income (Expense) [Abstract] Interest expense Interest Expense Interest income Investment Income, Interest Other expense Other Nonoperating Expense Total other expenses, net Other Nonoperating Income (Expense) Income (loss) before income tax expense (benefit) Income tax expense (benefit) Net income (loss) Net Income (Loss) Attributable to Parent Income (loss) per share Basic (in usd per share) Earnings Per Share, Basic Diluted (in usd per share) Earnings Per Share, Diluted Basic weighted average shares outstanding (in shares) Weighted Average Number of Shares Outstanding, Basic Diluted weighted average shares outstanding (in shares) Weighted Average Number of Shares Outstanding, Diluted Schedule of Finite-Lived Intangible Assets [Table] Schedule of Finite-Lived Intangible Assets [Table] Indefinite-lived Intangible Assets [Axis] Indefinite-lived Intangible Assets [Axis] Indefinite-lived Intangible Assets, Major Class Name [Domain] Indefinite-lived Intangible Assets, Major Class Name [Domain] Research and Development [Member] Research and Development [Member] Research and development. Trademark NAMIC [Member] Trademark Namic [Member] Trademark Namic Finite-Lived Intangible Assets by Major Class [Axis] Finite-Lived Intangible Assets by Major Class [Axis] Finite-Lived Intangible Assets, Major Class Name [Domain] Finite-Lived Intangible Assets, Major Class Name [Domain] Product Technologies [Member] Product Technologies [Member] Product technologies. Customer Relationships [Member] Customer Relationships [Member] Licenses [Member] License Agreement Terms [Member] Trademarks [Member] Trademarks [Member] Distributor Relationships [Member] Distributor Relationships [Member] Distributor relationships. Finite-Lived Intangible Assets [Line Items] Finite-Lived Intangible Assets [Line Items] Gross carrying value, finite intangible items Finite-Lived Intangible Assets, Gross Gross carrying value, indefinite items Indefinite-Lived Intangible Assets (Excluding Goodwill) Gross carrying value, excluding goodwill Intangible Assets, Gross (Excluding Goodwill) Accumulated amortization Finite-Lived Intangible Assets, Accumulated Amortization Net carrying value, finite intangible items Finite-Lived Intangible Assets, Net Net carrying value, indefinite items Indefinite Lived Intangible Assets Excluding Goodwill Net Indefinite lived intangible assets excluding goodwill net. Net carrying value, excluding goodwill Intangible Assets, Net (Excluding Goodwill) Weighted avg useful life Finite-Lived Intangible Asset, Useful Life Potential amount of undiscounted future contingent consideration Undiscounted Contingent Consideration Disclosure Undiscounted Contingent Consideration Disclosure Components of Income Tax Expense/(Benefit) Schedule of Components of Income Tax Expense (Benefit) [Table Text Block] Summary of Operating Loss Carryforwards Summary of Operating Loss Carryforwards [Table Text Block] Schedule of Inventories Schedule of Inventory, Current [Table Text Block] Fair Value Fair Value Disclosures [Text Block] Fair Value Measurements, Recurring and Nonrecurring [Table] Fair Value Measurements, Recurring and Nonrecurring [Table] Business Acquisition [Axis] Business Acquisition [Axis] Business Acquisition, Acquiree [Domain] Business Acquisition, Acquiree [Domain] Clinical Devices B.V [Member] Clinical Devices Bv [Member] Clinical Devices B.V. [Member] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Change in Fair Value of Contingent Consideration Change in Fair Value of Contingent Consideration The expense charged against earnings in the period resulting from remeasurement to fair value of contingent earn out liabilities related to acquisitions. Financial assets, begining balance Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value Financial liabilities, begining balance Fair Value, Measurement with Unobservable Inputs Reconciliations, Recurring Basis, Liability Value Currency translation adjustment, assets Fair Value, Measurement With Unobservable Inputs Reconciliation, Recurring Basis, Asset, Currency Translation Adjustment Fair Value, Measurement With Unobservable Inputs Reconciliation, Recurring Basis, Asset, Currency Translation Adjustment Currency translation adjustment, liabilities Fair Value, Measurement With Unobservable Inputs Reconciliation, Recurring Basis, Liability, Currency Translation Adjustment Fair Value, Measurement With Unobservable Inputs Reconciliation, Recurring Basis, Liability, Currency Translation Adjustment Included in other comprehensive income, assets Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Other Comprehensive Income (Loss) Included in other comprehensive income, liabilities Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Gain (Loss) Included in Other Comprehensive Income (Loss) Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Purchases, (Sales), Issuances, (Settlements) Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Purchases, (Sales), Issuances, (Settlements) Contingent consideration - Clinical Devices, assets Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Contingent Consideration Earn Out Asset Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Contingent Consideration Earn Out Asset Contingent consideration - Clinical Devices, liabilities Fair Value Measurement with Unobservable Inputs Reconciliation Recurring Basis Liability Contingent Consideration Earn Out Liability Fair value measurement with unobservable inputs reconciliation recurring basis liability contingent consideration earn out liability. Financial assets, ending balance Financial liabilities, ending balance Segment and Geographic Information Segment Reporting Disclosure [Text Block] Maximum [Member] Maximum [Member] Minimum [Member] Minimum [Member] Valuation Technique [Axis] Valuation Technique [Axis] Valuation Technique [Domain] Valuation Technique [Domain] Estimated useful life of intangible assets other than goodwill Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill) Payables and Accruals [Abstract] Accrued Liabilities Schedule of Accrued Liabilities [Table Text Block] Commitments and Contingencies Disclosure [Abstract] Loss Contingencies [Table] Loss Contingencies [Table] Litigation Case [Axis] Litigation Case [Axis] Litigation Case [Domain] Litigation Case [Domain] Biolitec [Member] Biolitec [Member] Biolitec [Member] C.R. Bard, Inc. [Member] Cr Bard Inc [Member] C.R. Bard, Inc. [Member] Loss Contingencies [Line Items] Loss Contingencies [Line Items] Number of lawsuits against biolitec previously settled for which seeking defense and indemnification Number of Lawsuits Number of lawsuits. Partial judgment granted Partial Judgment Granted Partial judgment granted in litigation matter. Litigation settlement amount Litigation Settlement, Amount Number of petitions filed for reexamination of patents Number of Patents Asserted for Reexamination Number of patents asserted for reexamination. Patent claims Number Of Patent Claims Number Of Patent Claims Rejected patent claims Patent Claim Rejections Patent Claim Rejections Earnings Per Share Earnings Per Share [Text Block] Investments in auction rate securities that failed auctions Available-for-sale Securities, Failed Auction, Value Number of investments Number of Investments Failed at Auction Number of investments failed at auction. Fair Value, Hierarchy [Axis] Fair Value, Hierarchy [Axis] Fair Value Hierarchy [Domain] Fair Value Hierarchy [Domain] Level 1 [Member] Fair Value, Inputs, Level 1 [Member] Level 2 [Member] Fair Value, Inputs, Level 2 [Member] Level 3 [Member] Fair Value, Inputs, Level 3 [Member] Liability Class [Axis] Liability Class [Axis] Fair Value by Liability Class [Domain] Fair Value by Liability Class [Domain] Interest Rate Swap Agreements [Member] Interest Rate Swap [Member] Contingent Consideration Earn Out Liability [Member] Contingent Consideration Earn Out Liability [Member] Contingent consideration earn out liability. Measurement Frequency [Axis] Measurement Frequency [Axis] Fair Value, Measurement Frequency [Domain] Fair Value, Measurement Frequency [Domain] Recurring [Member] Fair Value, Measurements, Recurring [Member] Financial Assets Assets, Fair Value Disclosure [Abstract] Marketable securities Available-for-sale Securities Total Financial Assets Assets, Fair Value Disclosure Financial Liabilities Liabilities, Fair Value Disclosure [Abstract] Total Financial Liabilities Financial and Nonfinancial Liabilities, Fair Value Disclosure Other Liabilities Disclosure [Abstract] Payroll and related expenses Employee-related Liabilities, Current Royalties Accrued Royalties, Current Accrued severance Restructuring Reserve, Current Other Sales and Excise Tax Payable, Current Interest rate swap liability Interest Rate Swap Liability Current Fair values as of the balance sheet date of all liabilities resulting from contracts that meet the criteria of being accounted for as derivative instruments. Accrued Professional Fees Accrued Professional Fees Deferred Revenue, Current Deferred Revenue, Current Accrued Rent, Current Accrued Rent, Current Other Other Accrued Liabilities, Current Total Accrued Liabilities, Current Investments, Debt and Equity Securities [Abstract] Marketable Securities Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure [Text Block] Statement of Stockholders' Equity [Abstract] Statement [Table] Statement [Table] Equity Components [Axis] Equity Components [Axis] Equity Component [Domain] Equity Component [Domain] Common Stock [Member] Common Stock [Member] Additional Paid-in Capital [Member] Additional Paid-in Capital [Member] Retained Earnings [Member] Retained Earnings [Member] Accumulated Other Comprehensive Loss [Member] Accumulated Other Comprehensive Income (Loss) [Member] Treasury Stock [Member] Treasury Stock [Member] Statement [Line Items] Statement [Line Items] Beginning Balance Stockholders' Equity Attributable to Parent Beginning Balance, Shares Shares, Issued Beginning Balance,Treasury Shares Net income (loss) Exercise of stock options Stock Issued During Period, Value, Stock Options Exercised Exercise of stock options, Shares Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period Purchase of common stock under ESPP Stock Issued During Period, Value, Employee Stock Purchase Plan Purchase of common stock under ESPP, Shares Stock Issued During Period, Shares, Employee Stock Purchase Plans Issuance of performance shares Stock Issued During Period, Value, Share-based Compensation, Net of Forfeitures Issuance of performance shares, Shares Stock Issued During Period, Shares, Share-based Compensation, Net of Forfeitures Stock based compensation Adjustments to Additional Paid in Capital, Share-based Compensation, Requisite Service Period Recognition Other comprehensive income, net of tax Other Comprehensive Income (Loss), Net of Tax Ending Balance Ending Balance, Shares Ending Balance,Treasury Shares Accrued Liabilities Accounts Payable and Accrued Liabilities Disclosure [Text Block] Restructuring and Related Activities [Abstract] Restructuring Restructuring and Related Activities Disclosure [Text Block] Subsequent Events [Abstract] Subsequent Event [Table] Subsequent Event [Table] Scenario [Axis] Scenario [Axis] Scenario, Unspecified [Domain] Scenario, Unspecified [Domain] Scenario, Forecast [Member] Scenario, Forecast [Member] Subsequent Event Type [Axis] Subsequent Event Type [Axis] Subsequent Event Type [Domain] Subsequent Event Type [Domain] Subsequent Event [Member] Subsequent Event [Member] Subsequent Event [Line Items] Subsequent Event [Line Items] Payments to Acquire Equity Method Investments Payments to Acquire Equity Method Investments Organization, Consolidation and Presentation of Financial Statements [Abstract] Recent Developments [Table] Recent Developments [Table] Recent Developments [Table] Investment, Name [Axis] Investment, Name [Axis] Investment, Name [Domain] Investment, Name [Domain] Income Statement Location [Axis] Income Statement Location [Axis] Income Statement Location [Domain] Income Statement Location [Domain] Guarantor Obligations, Nature [Axis] Guarantor Obligations, Nature [Axis] Guarantor Obligations, Nature [Domain] Guarantor Obligations, Nature [Domain] New Credit Agreement [Member] New Agreement [Member] New Agreement [Member] Variable Rate [Axis] Variable Rate [Axis] Variable Rate [Domain] Variable Rate [Domain] Base Rate [Member] Base Rate [Member] Eurodollar [Member] Eurodollar [Member] Credit Facility [Axis] Credit Facility [Axis] Credit Facility [Domain] Credit Facility [Domain] Term Loan Facility [Member] Term Loan Facility [Member] Term Loan Facility [Member] Senior Secured Revolving Credit Facility [Member] Senior Secured Revolving Credit Facility [Member] Senior Secured Revolving Credit Facility [Member] Letters of Credit [Member] Letters Of Credit [Member] Letters Of Credit [Member] Swingline Loans [Member] Swing Line Loans [Member] Swing Line Loans [Member] Revolving Credit Facility [Member] Revolving Credit Facility [Member] Lender Name [Axis] Lender Name [Axis] Line of Credit Facility, Lender [Domain] Line of Credit Facility, Lender [Domain] JP Morgan Chase [Member] Jp Morgan Chase [Member] JP Morgan Chase [Member] Recent Developments [Line Items] Recent Developments [Line Items] Recent Developments [Line Items] Senior secured term loan facility Secured Long Term Debt Initial Borrowing Capacity Total initial amount borrowed under secured long term debt facility. Term loan quarterly repayment, year one Percentage of Quarterly Repayment of Term Facility Year One Percentage of quarterly repayment of term facility year one. Term loan quarterly repayment, year two Percentage of Quarterly Repayment of Term Facility Year Two Percentage of quarterly repayment of term facility year two. Term loan quarterly repayment, year three Percentage of Quarterly Repayment of Term Facility Year Three Percentage of quarterly repayment of term facility year three. Term loan quarterly repayment, year four Percentage of Quarterly Repayment of Term Facility Year Four Percentage of quarterly repayment of term facility year four. Term loan quarterly repayment, year five Percentage of Quarterly Repayment of Term Facility Year Five Percentage of quarterly repayment of term facility year five. Percentage of increases leverage ratio base rate, minimum Debt Instrument, Interest Rate, Stated Percentage Rate Range, Minimum Percentage of increases leverage ratio base rate, maximum Debt Instrument, Interest Rate, Stated Percentage Rate Range, Maximum Percentage of increase in interest Debt Instrument Increase in Interest Rate in Case of Default Debt instrument increase in interest rate in case of default. Commitment fee, percentage Line of Credit Facility, Commitment Fee Percentage Initial amount borrowed under revolving facility Revolving Facility Debt Initial amount borrowed under Revolving facility. Ratio for debt service coverage Debt Service Coverage Ratio Debt service coverage ratio. Ratio of indebtedness to consolidated EBITDA Ratio of Indebtedness to Consolidated EBITDA Ratio of Indebtedness to Consolidated EBITDA Trademark impairment ASSETS Assets [Abstract] CURRENT ASSETS Assets, Current [Abstract] Cash and cash equivalents Cash and Cash Equivalents, at Carrying Value Marketable securities Accounts receivable, net of allowances of $2,820 and $3,043 respectively Accounts Receivable, Net, Current Inventories Prepaid income taxes Prepaid Taxes Prepaid expenses and other Prepaid Expense and Other Assets, Current Total current assets Assets, Current Property, plant and equipment, net Property, Plant and Equipment, Net Other assets Other Assets, Noncurrent Intangible assets, net Goodwill Goodwill Deferred income taxes, long-term Deferred Tax Assets, Net of Valuation Allowance, Noncurrent TOTAL ASSETS Assets LIABILITIES AND STOCKHOLDERS' EQUITY Liabilities and Equity [Abstract] CURRENT LIABILITIES Liabilities, Current [Abstract] Accounts payable Accounts Payable, Current Accrued liabilities Income taxes payable Taxes Payable, Current Current portion of long-term debt Long-term Debt, Current Maturities Current portion of contingent consideration Business Acquisition Contingent Consideration At Fair Value Current One Business Acquisition Contingent Consideration At Fair Value Current Total current liabilities Liabilities, Current Long-term debt, net of current portion Loans Payable, Noncurrent Deferred income taxes, long-term Deferred Income Taxes and Other Liabilities, Noncurrent Contingent consideration, net of current portion Business Acquisition Contingent Consideration At Fair Value Noncurrent One Business Acquisition Contingent Consideration At Fair Value Noncurrent Other long-term liabilities Other Liabilities, Noncurrent Total liabilities Liabilities COMMITMENTS AND CONTINGENCIES Commitments and Contingencies STOCKHOLDERS' EQUITY Stockholders' Equity Attributable to Parent [Abstract] Preferred stock, par value $.01 per share, 5,000,000 shares authorized; no shares issued and outstanding Preferred Stock, Value, Issued Common stock, par value $.01 per share, 75,000,000 shares authorized; 36,285,557 and 36,043,725 shares issued and 36,143,252 and 35,901,420 shares outstanding at November 30, 2015 and May 31, 2015, respectively Common Stock, Value, Issued Additional paid-in capital Additional Paid in Capital, Common Stock Retained earnings Retained Earnings (Accumulated Deficit) Treasury stock, 142,305 shares, at cost Treasury Stock, Value Accumulated other comprehensive loss Accumulated Other Comprehensive Income (Loss), Net of Tax Total stockholders’ equity TOTAL LIABILITIES AND STOCKHOLDERS’ EQUITY Liabilities and Equity Debt Disclosure [Abstract] Long Term Debt Long-term Debt [Text Block] Commitments and Contingencies Legal Matters and Contingencies [Text Block] Accounting Policies [Abstract] Consolidated Condensed Financial Statements Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block] Schedule of Restructuring and Related Costs [Table] Schedule of Restructuring and Related Costs [Table] Selling and Marketing Expense [Member] Selling and Marketing Expense [Member] Restructuring Cost and Reserve [Line Items] Restructuring Cost and Reserve [Line Items] Severance expense Severance Costs Basic Effect of dilutive securities Weighted Average Number Diluted Shares Outstanding Adjustment Diluted Securities excluded as their inclusion would be anti-dilutive Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Eligible Item or Group for Fair Value Option [Axis] Eligible Item or Group for Fair Value Option [Axis] Fair Value, Option, Eligible Item or Group [Domain] Fair Value, Option, Eligible Item or Group [Domain] Revenue Based Payments [Member] Range One [Member] Range one. Milestone Based Payments [Member] Range Two [Member] Range Two [Member] November 30, 2014 Discount rate Fair Value Unobservable Input Discount Rate Interest rate used to find the present value of contingent consideration liabilities with unobservable inputs to estimate fair value. Probability of payment Fair Value Inputs Probability of Payment Fair value inputs probability of payment. Projected fiscal year of payment Fair Value Inputs Projected Fiscal Year of Payment Fair value inputs projected fiscal year of payment. Total fair value financial liabilities Schedule of Long-term Debt Instruments [Table] Schedule of Long-term Debt Instruments [Table] Long-term Debt, Type [Axis] Long-term Debt, Type [Axis] Long-term Debt, Type [Domain] Long-term Debt, Type [Domain] Term Loan [Member] Term Loan [Member] Term loan. Debt Instrument [Line Items] Debt Instrument [Line Items] Commitment fee percentage Notional amount of interest rate swap agreement Derivative, Notional Amount Fixed interest rate payments Derivative, Fixed Interest Rate Inventories Inventory Disclosure [Text Block] Statement of Comprehensive Income [Abstract] Net Income (loss) Other comprehensive income (loss), before tax: Other Comprehensive Income (Loss), before Tax [Abstract] Unrealized gain (loss) on interest rate swap Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, before Tax Unrealized gain (loss) on marketable securities Other Comprehensive Income (Loss), Unrealized Holding Gain (Loss) on Securities Arising During Period, before Tax Foreign currency translation gain (loss) Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, before Tax Other comprehensive income (loss), before tax Other Comprehensive Income (Loss), before Tax, Portion Attributable to Parent Income tax (expense) benefit related to items of other comprehensive income Other Comprehensive Income (Loss), Tax, Portion Attributable to Parent Other comprehensive income (loss), net of tax Total comprehensive income (loss), net of tax Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Table] Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Table] Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] Fair Value, Measurement With Unobservable Inputs Reconciliation, Recurring Basis, Liability, Currency Translation Adjustment Schedule of Goodwill [Table] Schedule of Goodwill [Table] Goodwill [Line Items] Goodwill [Line Items] Goodwill, Beginning Balance Goodwill, Ending Balance Statement of Cash Flows [Abstract] Cash flows from operating activities: Net Cash Provided by (Used in) Operating Activities [Abstract] Adjustments to reconcile net income (loss) to net cash provided by operating activities: Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Depreciation and amortization Depreciation, Depletion and Amortization, Nonproduction Stock based compensation Share-based Compensation Deferred income taxes Deferred Income Tax Expense (Benefit) Loss on disposal of long-lived assets Impairment of Long-Lived Assets to be Disposed of Impairment loss on fixed and other long-term assets Impairment of Long-Lived Assets Held-for-use Change in accounts receivable allowances Provision for Doubtful Accounts Other Other Noncash Income (Expense) Changes in operating assets and liabilities, net of acquisitions: Increase (Decrease) in Operating Capital [Abstract] Accounts receivable Increase (Decrease) in Accounts Receivable Inventories Increase (Decrease) in Inventories Prepaid expenses and other assets Increase (Decrease) in Prepaid Expense and Other Assets Accounts payable, accrued and other liabilities Increase (Decrease) in Accounts Payable and Accrued Liabilities Net cash provided by operating activities Net Cash Provided by (Used in) Operating Activities, Continuing Operations Cash flows from investing activities: Net Cash Provided by (Used in) Investing Activities [Abstract] Additions to property, plant and equipment Payments to Acquire Property, Plant, and Equipment Acquisition of intangibles Payments to Acquire Businesses, Net of Cash Acquired Proceeds from sale or maturity of marketable securities Proceeds from Sale and Maturity of Marketable Securities Net cash used in investing activities Net Cash Provided by (Used in) Investing Activities, Continuing Operations Cash flows from financing activities: Net Cash Provided by (Used in) Financing Activities [Abstract] Proceeds from issuance of and borrowings on long-term debt Proceeds from Issuance of Long-term Debt Repayment of long-term debt Repayments of Long-term Debt Payment of contingent consideration previously established in purchase accounting Payment Of Contingent Consideration Payment Of Contingent Consideration Proceeds from exercise of stock options and employee stock purchase plan Proceeds from Issuance of Shares under Incentive and Share-based Compensation Plans, Including Stock Options Net cash provided by (used in) financing activities Net Cash Provided by (Used in) Financing Activities, Continuing Operations Effect of exchange rate changes on cash and cash equivalents Effect of Exchange Rate on Cash and Cash Equivalents Increase (decrease) in cash and cash equivalents Cash and Cash Equivalents, Period Increase (Decrease) Cash and cash equivalents at beginning of period Cash and cash equivalents at end of period Supplemental disclosure of non-cash investing and financing activities: Cash Flow, Noncash Investing and Financing Activities Disclosure [Abstract] Contractual obligations for acquisition of fixed assets Noncash or Part Noncash Acquisition, Net Nonmonetary Assets Acquired (Liabilities Assumed) Marketable Securities Schedule of Available-for-sale Securities Reconciliation [Table Text Block] Document And Entity Information [Abstract] Document and Entity Information [Abstract] Document Type Document Type Amendment Flag Amendment Flag Document Period End Date Document Period End Date Document Fiscal Year Focus Document Fiscal Year Focus Document Fiscal Period Focus Document Fiscal Period Focus Trading Symbol Trading Symbol Entity Registrant Name Entity Registrant Name Entity Central Index Key Entity Central Index Key Current Fiscal Year End Date Current Fiscal Year End Date Entity Filer Category Entity Filer Category Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Goodwill by Segment Schedule of Goodwill [Table Text Block] Intangible Assets Schedule of Intangible Assets [Table Text Block] Schedule of intangible assets. Subsequent Events Subsequent Events [Text Block]