Document and Entity Information [Abstract] Document and Entity Information [Abstract] Entity Registrant Name Entity Registrant Name Entity Central Index Key Entity Central Index Key Trading Symbol Trading Symbol Entity Current Reporting Status Entity Current Reporting Status Entity Voluntary Filers Entity Voluntary Filers 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 Entity Public Float Entity Public Float Document Type Document Type Document Period End Date Document Period End Date Amendment Flag Amendment Flag Document Fiscal Year Focus Document Fiscal Year Focus Document Fiscal Period Focus Document Fiscal Period Focus Statement Of Financial Position [Abstract] Statement of Financial Position [Abstract] Assets [Abstract] ASSETS Assets, Current [Abstract] Current assets: Cash and Cash Equivalents, At Carrying Value Cash and cash equivalents Cash and cash equivalents Cash and cash equivalents, beginning of year Cash and cash equivalents, end of year Accounts Receivable, Net, Current Accounts receivable (less allowance for doubtful accounts of $30 in 2011 and 2010) Accounts receivable, net Inventory, Net Inventories Inventories Prepaid Expense and Other Assets, Current Prepaid expenses and other current assets Prepaid expenses and other current assets Assets, Current Total current assets Total current assets Property, Plant and Equipment, Net Property and equipment, net Property and equipment, net Property, Plant and Equipment, Net, Beginning Balance Property, Plant and Equipment, Net, Ending Balance Available-For-Sale Securities, Debt Securities, Noncurrent Investments Other Assets, Noncurrent Other assets, net Other Assets, Noncurrent, Total Assets Total assets Total assets Liabilities and Equity [Abstract] LIABILITIES AND STOCKHOLDERS' EQUITY Liabilities, Current [Abstract] Current liabilities: Accounts Payable, Current Accounts payable Accounts Payable, Current, Total Accrued Liabilities, Current Accrued expenses Accrued Liabilities, Current, Total Employee-Related Liabilities, Current Accrued compensation Employee-related Liabilities, Current, Total Accrued Professional Fees, Current Accrued professional fees Deferred Revenue, Current Deferred revenue Deferred Revenue, Current, Total Liabilities, Current Total current liabilities Total current liabilities Deferred Revenue, Noncurrent Long-term deferred revenue Deferred Revenue, Noncurrent, Total Commitments and Contingencies Commitments and contingent liabilities (Note 8) Stockholders Equity Attributable To Parent [Abstract] Stockholders' equity: Preferred Stock, Value, Issued Preferred stock, $1.00 par value; 1,000,000 shares authorized, none outstanding Preferred Stock, Value, Issued, Total Preferred Stock, Value, Issued, Beginning Balance Preferred Stock, Value, Issued, Ending Balance Common Stock, Value, Issued Common stock, $.01 par value; shares authorized, 70,000,000 in 2011 and 2010; issued and outstanding 20,622,889 in 2011 and 20,041,863 in 2010 Common Stock, Value, Issued, Total Common Stock, Value, Issued, Beginning Balance Common Stock, Value, Issued, Ending Balance Additional Paid In Capital, Common Stock Additional paid-in capital Additional Paid in Capital, Common Stock, Beginning Balance Additional Paid in Capital, Common Stock, Ending Balance Accumulated Other Comprehensive Income (Loss), Net Of Tax Accumulated other comprehensive loss Retained Earnings (Accumulated Deficit) Accumulated deficit Accumulated deficit Retained Earnings (Accumulated Deficit), Beginning Balance Retained Earnings (Accumulated Deficit), Ending Balance Stockholders Equity Attributable To Parent Total stockholders' equity Total stockholders' equity Balance Balance Liabilities and Equity Total liabilities and stockholders' equity Total liabilities and stockholders' equity Allowance For Doubtful Accounts Receivable, Current Allowance for doubtful accounts (in dollars) Preferred Stock, Par Or Stated Value Per Share Preferred stock, par value (in dollars per share) Preferred Stock, Shares Authorized Preferred stock, shares authorized Preferred Stock, Shares Outstanding Preferred stock, shares outstanding Common Stock, Par Or Stated Value Per Share Common stock, par value (in dollars per share) Common Stock, Shares Authorized Common stock, shares authorized Common Stock, Shares, Issued Common stock, shares issued Common Stock, Shares, Issued, Total Common Stock, Shares, Outstanding Common stock, shares outstanding Income Statement [Abstract] Income Statement [Abstract] Revenue, Net [Abstract] Revenue: Sales Revenue, Goods, Net Product sales Product sales Sales Revenue, Services, Net Services Services Royalty Revenue Royalties Royalties Revenue, Net Total revenue Total revenue Costs and Expenses [Abstract] Costs and expenses: Cost Of Goods Sold Cost of product sales Cost of product sales Cost Of Services Cost of services Cost of services Research and Development Expense Research and development Research and development Selling and Marketing Expense Selling and marketing Selling and marketing General and Administrative Expense General and administrative General and administrative Costs and Expenses Total costs and expenses Total costs and expenses Operating Income (Loss) Income (loss) from operations Income (loss) from operations Gain (Loss) On Disposition Of Property Gain on sale of assets Gain on sale of assets Other Nonoperating Income Other income Investment Income, Interest Interest income Income (Loss) From Continuing Operations Before Income Taxes, Extraordinary Items, Noncontrolling Interest Income (loss) before provision for income taxes Income before provision for income taxes Income Tax Expense (Benefit) Provision for income taxes Provision for income taxes Net Income (Loss) Attributable To Parent Net income Net income Net income Earnings Per Share, Basic Net income per share - basic (in dollars per share) Net income (loss) per share - basic (in dollars per share) Earnings Per Share, Diluted Net income per share - diluted (in dollars per share) Net income (loss) per share - diluted (in dollars per share) Weighted Average Number Of Shares Outstanding, Basic Weighted average shares - basic (in shares) Weighted Average Number of Shares Outstanding, Basic, Total Weighted Average Number Of Shares Outstanding, Diluted Weighted average shares - diluted (in shares) Weighted Average Number of Shares Outstanding, Diluted, Total Statement Of Cash Flows [Abstract] Statement of Cash Flows [Abstract] Net Cash Provided By (Used In) Operating Activities, Continuing Operations [Abstract] Cash flows from operating activities: Adjustments To Reconcile Net Income (Loss) To Cash Provided By (Used In) Operating Activities [Abstract] Adjustments to reconcile net income to net cash provided by (used in) operating activities: Depreciation, Depletion and Amortization Depreciation and amortization Depreciation and amortization Share-Based Compensation Stock-based compensation Stock-based compensation Accretion (Amortization) Of Discounts and Premiums, Investments Amortization of discount on investments Amortization of discount on investments Increase (Decrease) In Operating Capital [Abstract] Increase (decrease) from changes in assets and liabilities: Increase (Decrease) In Accounts Receivable Accounts receivable Accounts receivable Increase (Decrease) In Inventories Inventories Inventories Inventories Increase (Decrease) In Prepaid Expense and Other Assets Prepaid expenses and other current assets Prepaid expenses and other current assets Prepaid expenses and other current assets Increase (Decrease) In Accounts Payable Accounts payable Accounts payable Increase (Decrease) In Accrued Liabilities Accrued expenses Increase (Decrease) In Deferred Revenue Deferred revenue Net Cash Provided By (Used In) Operating Activities, Continuing Operations Net cash provided by (used in) operating activities Net cash provided by (used in) operating activities Net Cash Provided By (Used In) Investing Activities, Continuing Operations [Abstract] Cash flows from investing activities: Payments To Acquire Property, Plant, and Equipment Purchases of property and equipment Purchases of property and equipment Purchases of property and equipment Payments To Acquire Available-For-Sale Securities, Debt Purchases of investments Purchases of investments Proceeds From Sale Of Property, Plant, and Equipment Proceeds from sale of assets, net Payments To Acquire Other Productive Assets Purchases of other assets Purchase of other assets Net Cash Provided By (Used In) Investing Activities, Continuing Operations Net cash provided by (used in) investing activities Net cash provided by (used in) investing activities Net Cash Provided By (Used In) Financing Activities, Continuing Operations [Abstract] Cash flows from financing activities: Proceeds From Issuance Of Common Stock Proceeds from issuance of common stock Shares Surrendered By Employees To Pay Taxes Related To Unrestricted Stock Shares surrendered by employees to pay taxes related to unrestricted stock Cash outflow due to shares surrendered by employees to pay taxes related to unrestricted stock. Shares surrendered by employees to pay taxes related to unrestricted stock Payments For Repurchase Of Common Stock Repurchase of common stock Repurchase of common stock Net Cash Provided By (Used In) Financing Activities, Continuing Operations Net cash provided by (used in) financing activities Net cash provided by (used in) financing activities Cash and Cash Equivalents, Period Increase (Decrease) Increase (decrease) in cash and cash equivalents Increase (decrease) in cash and cash equivalents Statement Of Stockholders Equity [Abstract] Statement of Stockholders' Equity [Abstract] Statement [Table] Statement [Table] Statement, Equity Components [Axis] Statement, Equity Components [Axis] Equity Component [Domain] Equity Component [Domain] Common Stock [Member] Common Stock Additional Paid-In Capital [Member] Additional Paid-In Capital Accumulated Other Comprehensive Income (Loss) [Member] Accumulated Other Comprehensive Loss Retained Earnings [Member] Accumulated Deficit Statement [Line Items] Statement [Line Items] Increase (Decrease) In Stockholders Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity [Roll Forward] Stock Issued During Period, Value, Stock Options Exercised Exercise of common stock options Share-Based Compensation Arrangement By Share-Based Payment Award, Options, Exercises In Period Exercise of common stock options (in shares) Stock Granted During Period, Value, Share-Based Compensation, Net Of Forfeitures Issuance of unrestricted stock Share-Based Compensation Arrangement By Share-Based Payment Award, Options, Grants In Period, Net Of Forfeitures Issuance of unrestricted stock (in shares) Shares Surrendered To Pay Taxes Related To Unrestricted Stock, Shares Shares surrendered by employees to pay taxes related to unrestricted stock (in shares) Value of shares surrendered by employees to pay taxes related to unrestricted stock. Shares Surrendered To Pay Taxes Related To Unrestricted Stock, Value Shares surrendered by employees to pay taxes related to unrestricted stock Shares surrendered by employees to pay taxes related to unrestricted stock Value of shares surrendered by employees to pay taxes related to unrestricted stock. Stock Repurchased During Period, Value Repurchase of common stock Stock Repurchased During Period, Shares Repurchase of common stock (in shares) Stock Issued During Period, Value, Employee Stock Purchase Plan Issuance of common stock under employee stock purchase plan Stock Issued During Period, Shares, Employee Stock Purchase Plans Issuance of common stock under employee stock purchase plan (in shares) Adjustments To Additional Paid In Capital, Share-Based Compensation, Requisite Service Period Recognition Stock-based compensation expense Accumulated Other Comprehensive Loss Accumulated other comprehensive loss Total of accumulated other comprehensive loss related to change in equity from transactions and other events and circumstances from non-owner sources. Stock Issued During Period Value Under Stock Option Exchange Program Issuance of unrestricted stock under a stock option exchange program Value of stock (or other type of equity) granted during the period under stock option exchange program. Stock Issued During Period Shares Under Stock Option Exchange Program Issuance of unrestricted stock under a stock option exchange program (in shares) Number of share options (or share units) granted during the period under stock option exchange program. Organization, Consolidation and Presentation Of Financial Statements [Abstract] Organization, Consolidation and Presentation of Financial Statements [Abstract] Nature Of Operations [Text Block] NATURE OF BUSINESS Accounting Policies [Abstract] Accounting Policies [Abstract] Significant Accounting Policies Disclosure [Text Block] SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES The entire disclosure for the general note to the financial statements for the reporting entity which may include, descriptions of the basis of presentation, significant accounting policies, reclassifications, new pronouncements not yet adopted and changes in accounting principles. Sale Of Asset [Abstract] Sale Of Asset [Abstract] Sale Of Asset [Text Block] ASSETS SOLD The entire disclosure for transaction relating to sale of asset. Inventory Disclosure [Abstract] Inventory Disclosure [Abstract] Inventory Disclosure [Text Block] INVENTORIES Property, Plant and Equipment [Abstract] Property, Plant and Equipment [Abstract] Property, Plant and Equipment Disclosure [Text Block] PROPERTY AND EQUIPMENT Income Tax Disclosure [Abstract] Income Tax Disclosure [Abstract] Income Tax Disclosure [Text Block] INCOME TAXES Shareholders Equity and Share-based Payments [Abstract] Shareholders Equity and Share-based Payments [Abstract] Shareholders Equity and Share-Based Payments [Text Block] EQUITY AND STOCK COMPENSATION PLANS Commitments and Contingencies Disclosure [Abstract] Commitments and Contingencies Disclosure [Abstract] Commitments and Contingencies Disclosure [Text Block] COMMITMENTS AND CONTINGENT LIABILITIES Segment Reporting [Abstract] Segment Reporting [Abstract] Segment Reporting Disclosure [Text Block] BUSINESS SEGMENTS AND MAJOR CUSTOMERS Compensation and Retirement Disclosure [Abstract] Compensation and Retirement Disclosure [Abstract] Pension and Other Postretirement Benefits Disclosure [Text Block] EMPLOYEE BENEFIT PLAN Earnings Per Share [Abstract] Earnings Per Share [Abstract] Earnings Per Share [Text Block] NET INCOME PER SHARE Quarterly Financial Information Disclosure [Abstract] Quarterly Financial Information Disclosure [Abstract] Quarterly Financial Information [Text Block] QUARTERLY RESULTS OF OPERATIONS - UNAUDITED Variable Interest Entity [Abstract] Variable Interest Entity [Abstract] Variable Interest Entity [Text Block] VARIABLE INTEREST ENTITY The entire disclosure for Variable Interest Entity, Which entered into a patent arrangement with a third party. Patent Management Operations [Abstract] Patent Management Operations [Abstract] Patent Management Operations [Text Block] PATENT MANAGEMENT OPERATIONS The entire disclosure for patent management operations, including a potential spin-off, sale or licensing of patents. Subsequent Events [Abstract] Subsequent Events [Abstract] Subsequent Events [Text Block] SUBSEQUENT EVENT Valuation and Qualifying Accounts [Abstract] Valuation and Qualifying Accounts [Abstract] Schedule Of Valuation and Qualifying Accounts Disclosure [Text Block] Valuation and Qualifying Accounts Stockholders Equity, Including Portion Attributable To Noncontrolling Interest [Abstract] Stockholders' equity: Operating Income (Loss) [Abstract] Operating Income (Loss) [Abstract] Revenues [Abstract] Revenue: Net Cash Provided By (Used In) Operating Activities [Abstract] Cash flows from operating activities: Net Cash Provided By (Used In) Investing Activities [Abstract] Cash flows from investing activities: Net Cash Provided By (Used In) Financing Activities [Abstract] Cash flows from financing activities: Entity Well-known Seasoned Issuer Balance (in shares) Balance (in shares)