ACCOUNTS PAYABLE AND ACCRUED LIABILITIES Accounts Payable and Accrued Liabilities Disclosure [Text Block] Accounts receivable, net Accounts Receivable, Net, Current Accumulated other comprehensive income Acquisition of businesses, net of cash acquired Payments to Acquire Businesses, Net of Cash Acquired Additional paid-in capital Amortization of debt offering costs CONSOLIDATED BALANCE SHEETS [Abstract] Basic and diluted net loss per common share (in dollars per share) Cash and cash equivalents Cash and cash equivalents at beginning of year Cash and cash equivalents at end of year Cash paid for interest Accounts payable and accrued liabilities Accounts receivable, net Increase (Decrease) in Accounts Receivable Inventories Increase (Decrease) in Inventories Prepaid expenses and other assets Increase (Decrease) in Prepaid Expense and Other Assets Changes in operating assets and liabilities [Abstract] Changes in operating assets and liabilities [Abstract] Common stock, shares authorized (in shares) Common stock, shares issued (in shares) Common stock, shares outstanding (in shares) Common stock, $0.01 par value; 200,000 shares authorized; 70,454 and 70,578 shares issued and outstanding at December 31, 2011 and 2010, respectively Comprehensive loss Comprehensive Income (Loss), Net of Tax, Attributable to Parent CONCENTRATIONS OF RISK Concentration Risk Disclosure [Text Block] Cost of product sales Cost of services and other Total current liabilities Liabilities, Current Current liabilities: SENIOR CONVERTIBLE NOTES Debt Disclosure [Text Block] Deferred tax assets Deferred tax assets-short-term portion Deferred revenue-short-term portion Deferred revenue-long-term portion DEFINED-CONTRIBUTION SAVINGS PLANS [Abstract] Effect of exchange rate changes on cash and cash equivalents Share-based compensation Gain from repurchase of convertible notes Loss (gain) on disposal of property and equipment Gain (Loss) on Disposition of Property Gain from repurchase of convertible notes Gains (Losses) on Extinguishment of Debt Impairment of property and equipment Goodwill impairment adjustment Goodwill impairment CONSOLIDATED STATEMENTS OF OPERATIONS [Abstract] CONSOLIDATED STATEMENTS OF OPERATIONS INCOME TAXES Income Tax Disclosure [Text Block] Cash paid for income taxes Restructuring charges Acquired technology rights, net Interest expense Inventories Inventory, Net Total liabilities and stockholders' equity Liabilities and Equity LIABILITIES AND STOCKHOLDERS' EQUITY: Available-for-sale securities-long-term portion Available-for-sale securities-short-term portion Net cash used in financing activities Net Cash Provided by (Used in) Financing Activities CASH FLOWS FROM FINANCING ACTIVITIES [Abstract] CASH FLOWS FROM FINANCING ACTIVITIES [Abstract] Net cash provided by (used in) investing activities Net Cash Provided by (Used in) Investing Activities CASH FLOWS FROM INVESTING ACTIVITIES [Abstract] CASH FLOWS FROM INVESTING ACTIVITIES [Abstract] Net cash provided by operating activities Net Cash Provided by (Used in) Operating Activities CASH FLOWS FROM OPERATING ACTIVITIES [Abstract] CASH FLOWS FROM OPERATING ACTIVITIES [Abstract] Net loss Net loss Net loss Net increase (decrease) in cash and cash equivalents Interest income and other, net Loss from operations Unrealized gain (loss) on investments, net of tax Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, Net of Tax Foreign currency translation adjustment Foreign currency translation adjustment, net of tax Unrealized gains on cash flow hedges Unrealized gain on hedging contracts, net of tax Unrealized gains (losses) on available-for-sale and non-marketable securities DEFINED-CONTRIBUTION SAVINGS PLANS Pension and Other Postretirement Benefits Disclosure [Text Block] Convertible redeemable preferred stock, shares authorized (in shares) Convertible redeemable preferred stock, shares issued (in shares) Preferred Stock Shares Outstanding Number of shares of convertible redeemable preferred stock Convertible redeemable preferred stock, par value (in dollars per share) Proceeds from maturities of available-for-sale securities Proceeds from sales of available-for-sale securities Acquired in-process technology Charge for acquired in-process technology Property and equipment, net PROPERTY AND EQUIPMENT [Abstract] Purchases of available-for-sale securities Payments to Acquire Available-for-sale Securities Purchase of technology rights Payments to Acquire Intangible Assets Capital expenditures Payments to Acquire Property, Plant, and Equipment Purchase of non-marketable equity investments Payments to Acquire Restricted Investments RELATED PARTY TRANSACTIONS Related Party Transactions Disclosure [Text Block] Repurchase of convertible notes Repayments of Convertible Debt Restricted cash RESTRUCTURING Restructuring and Related Activities Disclosure [Text Block] Accumulated deficit Royalties and other revenue Total revenue Revenue, Net REVENUE [Abstract] REVENUE [Abstract] Product sales Services INVENTORIES Inventory Disclosure [Text Block] Schedule II-Valuation and Qualifying Accounts Schedule of Valuation and Qualifying Accounts Disclosure [Text Block] SEGMENT AND GEOGRAPHIC INFORMATION Segment Reporting Disclosure [Text Block] Selling, general and administrative SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Significant Accounting Policies [Text Block] CONSOLIDATED STATEMENTS OF CASH FLOWS [Abstract] CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS [Abstract] CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY [Abstract] Stockholders' equity: Stockholders' equity STOCKHOLDERS' EQUITY [Abstract] SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION [Abstract] SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION [Abstract] Excess tax benefits for share-based compensation Total current assets Assets, Current Current assets: Shares used in computing basic and diluted net loss per common share (in shares) Restricted cash-long-term portion Common Stock [Member] Common stock [Member] PROPERTY AND EQUIPMENT Property, Plant and Equipment Disclosure [Text Block] Research and development Preferred Stock [Member] Convertible redeemable preferred stock [Member] Total assets Assets ACQUIRED TECHNOLOGY RIGHTS Intangible Assets Disclosure [Text Block] Amortization of investment premiums, net Other long-term liabilities Other Liabilities, Noncurrent Deferred tax assets-long-term portion Statement [Table] ASSETS: Statement [Line Items] CONCENTRATIONS OF RISK [Abstract] UNAUDITED QUARTERLY FINANCIAL INFORMATION Quarterly Financial Information [Text Block] Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity [Roll Forward] Excess tax benefits for share-based compensation Excess Tax Benefit from Share-based Compensation, Operating Activities Convertible notes Other long-term assets Common stock, par value (in dollars per share) Reclassification adjustment for realized (losses) gains recognized in net loss Other Comprehensive Income (Loss), Reclassification Adjustment for Sale of Securities Included in Net Income, Net of Tax Total stockholders' equity Balance Balance Stockholders' Equity Attributable to Parent Income tax provision (benefit) Convertible redeemable preferred stock, $0.01 par value; 5,000 shares authorized; no shares issued and outstanding at December 31, 2010 and 2009 Other comprehensive (loss) income: Other comprehensive income (loss), net of tax [Abstract] Statement, Equity Components [Axis] Additional Paid-in Capital [Member] Additional paid-in capital [Member] Retained Earnings [Member] Accumulated deficit [Member] Accumulated Other Comprehensive Income (Loss) [Member] Accumulated other comprehensive income (loss) [Member] Equity Component [Domain] Common stock issued upon exercise of stock options and restricted stock, net of tax withholding related to vesting of restricted stock units (in shares) Stock Issued During Period, Shares, Period Increase (Decrease) COSTS AND EXPENSES [Abstract] COSTS AND EXPENSES [Abstract] Total costs and expenses Costs and Expenses Income tax benefit from share-based compensation Adjustments to Additional Paid in Capital, Income Tax Benefit from Share-based Compensation Depreciation and amortization Adjustments to reconcile net loss to net cash provided by operating activities [Abstract] Adjustments to reconcile net loss to net cash provided by operating activities NATURE OF OPERATIONS Nature of Operations [Text Block] Accounts payable and accrued liabilities Accounts Payable and Accrued Liabilities, Current Net change in other comprehensive income (loss), net of tax Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent Share-based compensation expense Adjustments to Additional Paid in Capital, Share-based Compensation, Requisite Service Period Recognition NATURE OF OPERATIONS [Abstract] Loss before income taxes Income (Loss) from Continuing Operations before Income Taxes, Extraordinary Items, Noncontrolling Interest Prepaid expenses and other current assets Deferred revenue ACCOUNTS PAYABLE AND ACCRUED LIABILITIES [Abstract] Balance (in shares) Balance (in shares) Shares, Outstanding COMMITMENTS AND CONTINGENCIES [Abstract] INCOME TAXES [Abstract] ACQUIRED TECHNOLOGY RIGHTS [Abstract] FAIR VALUE OF FINANCIAL INSTRUMENTS [Abstract] SUBSEQUENT EVENTS Subsequent Events [Text Block] INVENTORIES [Abstract] SENIOR CONVERTIBLE NOTES [Abstract] UNAUDITED QUARTERLY FINANCIAL INFORMATION [Abstract] RESTRUCTURING [Abstract] SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES [Abstract] SEGMENT AND GEOGRAPHIC INFORMATION [Abstract] RELATED PARTY TRANSACTIONS [Abstract] SUBSEQUENT EVENTS [Abstract] Schedule II-Valuation and Qualifying Accounts [Abstract] Other long-term liabilities Realized loss (gain) on debt and equity investments Available-for-sale Securities, Gross Realized Gain (Loss), Excluding Other than Temporary Impairments Amendment Flag Current Fiscal Year End Date Document Period End Date Entity [Text Block] Entity Well-known Seasoned Issuer Entity Voluntary Filers Entity Current Reporting Status Entity Filer Category Entity Public Float Entity Registrant Name Entity Central Index Key Entity Common Stock, Shares Outstanding Document Fiscal Year Focus Document Fiscal Period Focus Document Type Assets Held For Sale Current Property and equipment, net-held for sale Provision For Doubtful Accounts Provision for note receivable Unrealized Gain Loss On Derivatives Unrealized gain on hedging instruments Other Than Temporary Impairment Losses Investments Portion Recognized In Earnings Net Other-than-temporary impairment on securities Proceeds From Sale Of Property Plant And Equipment Proceeds from sale of property and equipment Unrealized Gain Loss On Securities Unrealized gain on investments COMMITMENTS [Abstract] WARRANTIES [Abstract] LEGAL PROCEEDINGS [Abstract] Product Warranty Disclosure Text Block WARRANTIES Commitments Disclosure Text Block COMMITMENTS Legal Matters And Contingencies Text Block LEGAL PROCEEDINGS FAIR VALUE MEASUREMENTS [Abstract] FINANCIAL INSTRUMENTS [Abstract] Fair Value Disclosures Text Block FAIR VALUE MEASUREMENTS Financial Instruments Disclosure Text Block FINANCIAL INSTRUMENTS Stock Issued During Period Value Share Based Compensation Common stock issued upon exercise of stock options and restricted stock, net of tax withholding related to vesting of restricted stock units Proceeds From Issuance Of Common Stock Issuance of common stock, net STOCKHOLDERS EQUITY AND SHARE-BASED COMPENSATION [Abstract] Stockholders Equity And Share Based Compensation Abstract STOCKHOLDERS EQUITY AND SHARE-BASED COMPENSATION StockholdersEquityNoteDisclosureTextBlock