Document and Entity Information [Abstract] Document and Entity Information Document And Entity Information Entity Registrant Name Entity Central Index Key Document Type Document Period End Date Amendment Flag Current Fiscal Year End Date Entity Well-known Seasoned Issuer Entity Voluntary Filers Entity Current Reporting Status Entity Filer Category Entity Public Float Entity Common Stock, Shares Outstanding Document Fiscal Year Focus Document Fiscal Period Focus Consolidated Statements of Income [Abstract] Statement [Table] Statement [Line Items] Net revenues Sales Revenue, Goods, Net, Total Sales Revenue, Goods, Net Cost of Goods Sold Cost of goods sold Cost of goods sold Gross profit Gross Profit Operating expenses: Operating Expenses [Abstract] Research, development and engineering Research and Development Expense, Total Research and Development Expense Selling, general and administrative Selling, general and administrative Selling, General and Administrative Expense Contingent Consideration Income Contingent consideration income Total operating expenses Total operating expenses Operating Expenses Operating Income (Loss) Operating income Other Nonoperating Income (Expense) Other expense, net Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Extraordinary Items, Cumulative Effects of Changes in Accounting Principles, Noncontrolling Interest Income before provision for income taxes Income Tax Expense (Benefit) Provision for income taxes Net income Net income Net Income (Loss) Attributable to Parent Basic income per common share Earnings Per Share, Basic [Abstract] Net income Earnings Per Share, Basic, Total Earnings Per Share, Basic Income per common share assuming dilution Earnings Per Share, Diluted [Abstract] Net income Earnings Per Share, Diluted, Total Earnings Per Share, Diluted Weighted average shares outstanding Weighted Average Number of Shares Outstanding, Diluted [Abstract] Basic Weighted Average Number of Shares Outstanding, Basic, Total Weighted Average Number of Shares Outstanding, Basic Diluted Weighted Average Number of Shares Outstanding, Diluted, Total Weighted Average Number of Shares Outstanding, Diluted Consolidated Balance Sheets [Abstract] ASSETS Assets [Abstract] Current assets: Assets, Current [Abstract] Cash and cash equivalents Cash and Cash Equivalents, at Carrying Value, Total Cash and Cash Equivalents at Beginning of Year Cash and Cash Equivalents at End of Period Cash and Cash Equivalents, at Carrying Value Accounts Receivable, Net, Current Accounts Receivable, Net, Current, Total Accounts receivable, less allowance of $1,799 at April 2, 2011 and $2,554 at April 3, 2010 Inventories, net Inventory, Net, Total Inventory, Net Deferred tax asset, net Deferred Tax Assets, Net, Current, Total Deferred Tax Assets, Net, Current, Beginning Balance Deferred Tax Assets, Net, Current, Ending Balance Deferred Tax Assets, Net, Current Other Assets, Current Prepaid expenses and other current assets Assets, Current Total current assets Property, plant and equipment: Property, Plant and Equipment, Net [Abstract] Land, building and building improvements Land, building and building improvements Land, building and building improvements. Plant equipment and machinery Machinery and Equipment, Gross, Total Machinery and Equipment, Gross Office equipment and information technology Office equipment and information technology Office equipment and information technology. Property, Plant and Equipment, Other Haemonetics equipment Property, Plant and Equipment, Gross Total property, plant and equipment Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Less: accumulated depreciation Property, Plant and Equipment, Net Net property, plant and equipment Other Assets [Abstract] Other assets: Other assets. Finite-Lived Intangible Assets, Net Finite-Lived Intangible Assets, Net, Total Intangible assets, less amortization of $43,827 at April 2, 2011 and $32,693 at April 3, 2010 Goodwill Goodwill, Beginning Balance Goodwill, Ending Balance Goodwill Deferred tax asset, long term Deferred Tax Assets, Net, Noncurrent, Total Deferred Tax Assets, Net, Noncurrent Other Assets, Noncurrent Other long-term assets Total assets Assets LIABILITIES AND STOCKHOLDERS' EQUITY Liabilities and Stockholders' Equity [Abstract] Current liabilities: Liabilities, Current [Abstract] Notes payable and current maturities of long-term debt Long-term Debt, Current Maturities, Total Long-term Debt, Current Maturities Accounts payable Accounts Payable, Current, Total Accounts Payable, Current Accrued payroll and related costs Employee-related Liabilities, Current, Total Employee-related Liabilities, Current Accrued income taxes Accrued Income Taxes, Current Deferred tax liability Deferred Tax Liabilities, Current Other Liabilities, Current Other liabilities Liabilities, Current Total current liabilities Long-term debt, net of current maturities Long-term Debt, Excluding Current Maturities, Total Long-term Debt, Excluding Current Maturities Long-term deferred tax liability Deferred Tax Liabilities, Noncurrent Other long-term liabilities Other Liabilities, Noncurrent, Total Other Liabilities, Noncurrent Commitments and contingencies (Note 12) Commitments and Contingencies Stockholders' equity: Stockholders' Equity Attributable to Parent [Abstract] Common Stock, Value, Issued Common Stock, Value, Issued, Ending Balance Common Stock, Value, Issued, Beginning Balance Common Stock, Value, Issued, Total Common stock, $0.01 par value; Authorized - 150,000,000 shares; Issued and outstanding 25,660,393 shares at April 2, 2011 and 25,440,856 shares at April 3, 2010 Additional paid-in capital Additional Paid in Capital, Common Stock, Beginning Balance Additional Paid in Capital, Common Stock, Ending Balance Additional Paid in Capital, Common Stock Retained earnings Retained Earnings (Accumulated Deficit), Total Retained Earnings (Accumulated Deficit), Beginning Balance Retained Earnings (Accumulated Deficit), Ending Balance Retained Earnings (Accumulated Deficit) Accumulated Other Comprehensive Income (Loss), Net of Tax Accumulated other comprehensive income Total stockholders' equity Beginning Balance Ending Balance Stockholders' Equity Attributable to Parent Total liabilities and stockholders' equity Liabilities and Stockholders' Equity Allowance for Doubtful Accounts Receivable, Current Allowance for Doubtful Accounts Receivable, Current, Ending Balance Allowance for Doubtful Accounts Receivable, Current, Beginning Balance Allowance, accounts receivable Finite-Lived Intangible Assets, Accumulated Amortization Amortization, other intangibles Common Stock, Par or Stated Value Per Share Common stock, par value Common Stock, Shares Authorized Common stock, authorized Common Stock, Shares, Issued Common Stock, Shares, Issued, Total Common stock, issued Common Stock, Shares, Outstanding Common Stock, Shares, Outstanding, Ending Balance Common Stock, Shares, Outstanding, Beginning Balance Common stock, outstanding Statement, Equity Components [Axis] Total Stockholders Equity Parent [Member] Parent Common Stock [Member] Common Stock Additional Paid-in Capital [Member] Additional Paid-in Capital Retained Earnings [Member] Retained Earnings Accumulated Other Comprehensive Income/(Loss) [Member] Accumulated Other Comprehensive Income/(Loss) Comprehensive Income [Member] Comprehensive Income Beginning Balance, Shares Ending Balance, Shares Shares, Issued Employee stock purchase plan Stock Issued During Period, Value, Employee Stock Purchase Plan Employee stock purchase plan, Shares Stock Issued During Period, Shares, Employee Stock Purchase Plans Exercise of stock options and related tax benefit Stock Issued During Period, Value, Stock Options Exercised Stock Issued During Period, Shares, Stock Options Exercised Exercise of stock options and related tax benefit, Shares Stock Repurchased During Period, Value Shares repurchased Shares repurchased Shares repurchased, Shares Stock Repurchased During Period, Shares Issuance of restricted stock, net of cancellations, shares Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures Stock compensation expense Adjustments to Additional Paid in Capital, Share-based Compensation, Requisite Service Period Recognition, Value Foreign currency translation adjustment Other Comprehensive Income, Foreign Currency Transaction and Translation Adjustment, Net of Tax, Total Other Comprehensive Income, Foreign Currency Transaction and Translation Adjustment, Net of Tax Other Comprehensive Income, Unrealized Gain (Loss) on Derivatives Arising During Period, Net of Tax Unrealized loss (gain) on hedges, net of tax Other Comprehensive Income, Reclassification Adjustment on Derivatives Included in Net Income, Net of Tax Reclassification of hedge loss to earnings, net of tax Reclassification of hedge gain to earnings, net of tax Comprehensive income Comprehensive Income, Net of Tax, Attributable to Parent Consolidated Statements of Cash Flows [Abstract] Cash Flows from Operating Activities: Net Cash Provided by (Used in) Operating Activities [Abstract] Adjustments to reconcile net income to net cash provided by operating activities: Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Non cash items: Adjustments, Noncash Items, to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Depreciation and amortization Depreciation, Depletion and Amortization, Nonproduction, Total Depreciation, Depletion and Amortization, Nonproduction Stock compensation expense Share-based Compensation, Total Share-based Compensation Gain (Loss) on Sale of Property Plant Equipment Loss/(gain) on sales of property, plant and equipment Gain (Loss) on Sale of Property Plant Equipment, Total (Gain)/Loss on sales of property, plant and equipment Unrealized Gain (Loss) on Derivatives Unrealized gain from hedging activities Unrealized loss/(gain) from hedging activities (Reversal)/accretion of interest expense on contingent consideration Accretion Expense Change in operating assets and liabilities: Increase (Decrease) in Operating Capital [Abstract] Increase (Decrease) in Accounts Receivable (Increase)/decrease in accounts receivable, net Decrease in accounts receivable, net Increase (Decrease) in Inventories (Increase)/decrease in inventories Increase (Decrease) in Inventories, Total (Increase)/decrease in inventories Increase Decrease In Prepaid Taxes Decrease in prepaid income taxes Decrease in prepaid income taxes Increase Decrease In Prepaid Taxes. Increase (Decrease) in Other Operating Assets and Liabilities, Net Decrease in other assets and other long-term liabilities Decrease in other assets and other long-term liabilities Tax benefit of exercise of stock options Tax Benefit from Stock Options Exercised Increase (Decrease) in Accounts Payable and Accrued Liabilities (Decrease)/increase in accounts payable and accrued expenses Net Cash Provided by (Used in) Operating Activities Net cash provided by operating activities Cash Flows from Investing Activities: Net Cash Provided by (Used in) Investing Activities [Abstract] Capital expenditures on property, plant and equipment Payments to Acquire Property, Plant, and Equipment, Total Capital expenditures on property, plant and equipment Payments to Acquire Property, Plant, and Equipment Proceeds from sale of property, plant and equipment Proceeds from Sale of Other Property, Plant, and Equipment Acquisition of SEBRA Acquisition of SEBRA Payments to Acquire Businesses, Gross Net Cash Provided by (Used in) Investing Activities Net cash used in investing activities Cash Flows from Financing Activities: Net Cash Provided by (Used in) Financing Activities [Abstract] Payments on long-term real estate mortgage Mortgage Loans on Real Estate, New Mortgage Loans Net (decrease)/increase in short-term loans Proceeds from Lines of Credit, Total Proceeds from Lines of Credit Employee stock purchase plan Employee Stock Ownership Plan (ESOP), Cash Contributions to ESOP Exercise of stock options Proceeds from Stock Options Exercised Excess tax benefit on exercise of stock options Excess Tax Benefit from Share-based Compensation, Financing Activities Payments for Repurchase of Common Stock Share repurchase Share repurchase Net Cash Provided by (Used in) Financing Activities Net cash used in financing activities Effect of Exchange Rate on Cash and Cash Equivalents Effect of exchange rates on cash and cash equivalents Cash and Cash Equivalents, Period Increase (Decrease) Net Increase in Cash and Cash Equivalents Non-cash Investing and Financing Activities: Cash Flow, Noncash Investing and Financing Activities Disclosure [Abstract] Transfers from inventory to fixed assets Transfers from inventory to fixed assets for placements of Haemonetics equipment Transfers from inventory to fixed assets. Supplemental Disclosures of Cash Flow Information: Supplemental Cash Flow Information [Abstract] Interest Paid, Net Interest paid Income Taxes Paid, Net Income taxes paid Description of the Business [Abstract] Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block] DESCRIPTION OF THE BUSINESS Summary of Significant Accounting Pronouncements [Abstract] Schedule of New Accounting Pronouncements and Changes in Accounting Principles [Text Block] SUMMARY OF SIGNIFICANT ACCOUNTING PRONOUNCEMENTS Basic income per common share Earnings Per Share ("EPS") [Abstract] EARNINGS PER SHARE ("EPS") Earnings Per Share [Text Block] Capital Stock [Abstract] Disclosure of Compensation Related Costs, Share-based Payments [Text Block] CAPITAL STOCK Product Warranties [Abstract] PRODUCT WARRANTIES Product Warranty Disclosure [Text Block] Comprehensive Income [Abstract] COMPREHENSIVE INCOME Comprehensive Income Note [Text Block] Inventories [Abstract] INVENTORIES Inventory Disclosure [Text Block] Derivatives and Fair Value Measurements [Abstract] Derivatives and Fair Value Measurements. Derivatives And Fair Value Measurements [Text Block] DERIVATIVES AND FAIR VALUE MEASUREMENTS Derivatives and Fair Value Measurements. Income Taxes [Abstract] INCOME TAXES Income Tax Disclosure [Text Block] Commitments and Contingencies [Abstract] Commitments And Contingencies. COMMITMENTS AND CONTINGENCIES Commitments and Contingencies Disclosure [Text Block] Retirement Plans [Abstract] Schedule of Defined Benefit Plans Disclosures [Text Block] RETIREMENT PLANS Segment Reporting Disclosure [Text Block] SEGMENT INFORMATION Reorganization [Abstract] REORGANIZATION Restructuring and Related Activities Disclosure [Text Block] Capitalization Of Software Development Costs [Abstract] CAPITALIZATION OF SOFTWARE DEVELOPMENT COSTS Research, Development, and Computer Software Disclosure [Text Block] Consolidated Statement of Stockholders' Equity and Other Comprehensive Income [Abstract] Interest Expense Interest expense Interest expense Investment Income Interest Interest income Impairment of Intangible Assets (Excluding Goodwill) Asset impairment Asset impairment Other Comprehensive Income, Defined Benefit Plans Adjustment, Net of Tax Other Comprehensive Income, Defined Benefit Plans Adjustment, Net of Tax, Total Impact of defined benefit plans, net of tax Deferred Income Tax Expense (Benefit) Deferred Income Tax Expense (Benefit), Total Deferred tax expense Summary of Quarterly Data [Abstract] Quarterly Financial Information [Text Block] SUMMARY OF QUARTERLY DATA (UNAUDITED) Subsequent Events [Abstract] Subsequent events. Schedule of Subsequent Events [Text Block] SUBSEQUENT EVENTS (UNAUDITED) Acquisitions [Abstract] Acquisitions [Abstract] Acquisitions. Payments to Acquire Businesses, Net of Cash Acquired Acquisition of Altivation Payments to Acquire Businesses, Net of Cash Acquired, Total Business Acquisition, Purchase Price Allocation, Notes Payable and Long-term Debt Debt assumed from acquisition Schedule of Business Acquisitions, by Acquisition [Text Block] ACQUISITIONS Notes Payable and Long-Term Debt [Abstract] Debt Disclosure [Text Block] NOTES PAYABLE AND LONG-TERM DEBT Goodwill and Other Intangible Assets [Abstract] Goodwill and Other Intangible Assets. Goodwill and Other Intangible Assets [Text Block] GOODWILL AND OTHER INTANGIBLE ASSETS Goodwill and Other Intangible Assets. Segment Information [Abstract] Segment Information. Assets Other Total other assets Assets Other. Acquisition of Company One Acquisition of ACCS Acquisition of Company One. Acquisition of Company Two Acquisition of Global Med Technologies Acquisition of Company Two. Acquisition of Company Three Acquisition of Neoteric Acquisition of Company Three. Acquisition of Company Four Acquisition of Medicell Acquisition of Company Four. Valuation And Qualifying Accounts [Abstract] Valuation And Qualifying Accounts.