Statement of Financial Position [Abstract] Current assets: Current assets: [Abstract] Cash and cash equivalents Accounts receivable, net Inventories Deferred tax assets Other current assets Total current assets Fixed assets, net Goodwill Deferred tax assets Intangible assets, net of accumulated amortization of $1,683 and $1,298, respectively Other assets Total assets Liabilities and Shareholders’ Equity: Liabilities and Shareholders’ Equity: [Abstract] Current liabilities: Current liabilities: [Abstract] Accounts payable Accrued liabilities Income taxes payable Accrued contingent consideration (Note 4) Deferred revenue Total current liabilities Deferred revenue, net of current portion Deferred rent, net of current portion Accrued contingent consideration, net of current portion (Note 4) Other liabilities Total liabilities Shareholders’ equity: Shareholders’ equity: [Abstract] Common stock, $0.01 par value, 20,000,000 shares authorized; 11,031,618 and 10,903,077 shares issued, respectively; 8,244,580 and 8,720,200 shares outstanding, respectively Additional paid-in capital Retained earnings Accumulated other comprehensive loss, net of tax Treasury stock, at cost, 2,787,038 and 2,182,877 shares, respectively Total shareholders’ equity Total liabilities and shareholders’ equity Common stock par value (in Dollars per share) Common stock, shares authorized Common stock, shares issued Common stock, shares outstanding Income Statement [Abstract] Net sales Cost of sales Gross profit Operating expenses: Operating expenses: [Abstract] Engineering, design and product development Selling and marketing General and administrative Legal fees associated with lawsuit (Note 9) Business consolidation and restructuring (Note 8) Operating income Interest and other income (expense): Interest and other income (expense): [Abstract] Interest, net Other, net Income before income taxes Income tax provision Net income Net income per common share: Net income per common share: [Abstract] Basic (in Dollars per share) Diluted (in Dollars per share) Shares used in per-share calculation: Shares used in per-share calculation: [Abstract] Basic (in Shares) Diluted (in Shares) Dividends declared and paid per common share: (in Dollars per share) Statement of Other Comprehensive Income [Abstract] Foreign currency translation adjustment, net of tax Comprehensive income Statement of Cash Flows [Abstract] Cash flows from operating activities: Cash flows from operating activities: [Abstract] Adjustments to reconcile net income to net cash provided by operating activities: Adjustments to reconcile net income to net cash provided by operating activities: [Abstract] Share-based compensation expense Incremental tax benefits from stock options exercised Depreciation and amortization Gain on sale of fixed assets Foreign currency transaction (gains) losses Changes in operating assets and liabilities: Changes in operating assets and liabilities: [Abstract] Accounts receivable Inventories Prepaid income taxes Other current and long term assets Accounts payable Accrued liabilities and other liabilities Net cash provided by operating activities Cash flows from investing activities: Cash flows from investing activities: [Abstract] Capital expenditures Additions to capitalized software Proceeds from sale of assets Net cash used in investing activities Cash flows from financing activities: Cash flows from financing activities: [Abstract] Proceeds from stock option exercises Payment of dividends on common stock Purchases of common stock for treasury Incremental tax benefits from stock options exercised Net cash used in financing activities Effect of exchange rate changes on cash and cash equivalents (Decrease) increase in cash and cash equivalents Cash and cash equivalents, beginning of period Cash and cash equivalents, end of period Business Description and Basis of Presentation [Abstract] Business Description and Basis of Presentation [Abstract] Business Description and Basis of Presentation [Text Block] Inventory Disclosure [Abstract] Inventory Disclosure [Abstract] Inventory Disclosure [Text Block] Product Warranties Disclosures [Abstract] Product Warranty Disclosure [Text Block] Business Combinations [Abstract] Business Combination Disclosure [Text Block] Earnings Per Share [Abstract] Earnings Per Share [Text Block] Stockholders' Equity Note [Abstract] Stockholders' Equity Note Disclosure [Text Block] Income Tax Disclosure [Abstract] Income Tax Disclosure [Text Block] Restructuring and Related Activities [Abstract] Restructuring and Related Activities Disclosure [Text Block] Commitments and Contingencies Disclosure [Abstract] Commitments and Contingencies Disclosure [Text Block] Schedule of Inventory, Current [Table Text Block] Schedule of Product Warranty Liability [Table Text Block] Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Schedule of Stockholders Equity [Table Text Block] Inventory components Inventory components [Abstract] Raw materials and purchased component parts Work-in-process Finished goods Warranty Activity Warranty Activity [Abstract] Balance, beginning of period Warranties issued Warranty settlements Balance, end of period Earnings Per Share Reconciliation Earnings Per Share Reconciliation [Abstract] Net income (in Dollars) Shares: Shares: [Abstract] Basic: Weighted average common shares outstanding Add: Dilutive effect of outstanding options as determined by the treasury stock method Diluted: Weighted average common and common equivalent shares outstanding Net income per common share: Net income per common share: [Abstract]0 Changes in Shareholders' Equity Changes in Shareholders' Equity [Abstract] Balance at December 31, 2012 Proceeds from issuance of shares from exercise of stock options Incremental tax benefits from stock options exercised Issuance of deferred stock units, net of relinquishments Foreign currency translation adjustment Reversal of deferred tax asset in connection with stock options forfeited Dividends declared and paid on common stock Balance at September 30, 2013 Product Warranty Accrual, Noncurrent Business Combination, Contingent Consideration Arrangements, Description Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, Low Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High Business Acquisition, Contingent Consideration, at Fair Value Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration, Asset Dilutive Securities, Effect on Basic Earnings Per Share, Including Options and Restrictive Stock Units Common Stock, Dividends, Per Share, Declared Payments of Ordinary Dividends, Common Stock (in Dollars) Common Stock, Dividends, Per Share, Cash Paid Income Tax Reconciliation, Change in Enacted Tax Rate Income Tax Expense (Benefit) Effective Income Tax Rate, Continuing Operations Unrecognized Tax Benefits, Decreases Resulting from Prior Period Tax Positions Income Tax Reconciliation, Tax Credits, Research Unrecognized Tax Benefits that Would Impact Effective Tax Rate Restructuring and Related Cost, Incurred Cost Scenario [Axis] Scenario, Unspecified [Domain] Document and Entity Information [Abstract] Liabilities, Current Operating Expenses Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High Effective Income Tax Rate, Continuing Operations Payments of Ordinary Dividends, Common Stock Dilutive Securities, Effect on Basic Earnings Per Share, Including Options and Restrictive Stock Units Deferred Tax Assets, Net of Valuation Allowance, Noncurrent Assets, Noncurrent Net Cash Provided by (Used in) Investing Activities Document Period End Date Business Acquisition, Contingent Consideration, at Fair Value Net Cash Provided by (Used in) Operating Activities Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, Low Assets, Current Product Warranty Accrual Amendment Flag Inventory Disclosure [Text Block] Payments to Acquire Property, Plant, and Equipment Business Combination, Contingent Consideration Arrangements, Description Deferred Tax Assets, Net of Valuation Allowance, Current Entity Central Index Key Unrecognized Tax Benefits, Decreases Resulting from Prior Period Tax Positions Commitments and Contingencies Disclosure [Text Block] Excess Tax Benefit (Tax Deficiency) from Share-based Compensation, Financing Activities Net Cash Provided by (Used in) Financing Activities Income Tax Disclosure [Text Block] Product Warranty Disclosure [Text Block] Adjustments to Additional Paid in Capital, Income Tax Benefit from Share-based Compensation Entity Common Stock, Shares Outstanding Income Tax Reconciliation, Tax Credits, Research Comprehensive Income (Loss), Net of Tax, Attributable to Parent Schedule of Product Warranty Liability [Table Text Block] Increase (Decrease) in Accounts Payable Schedule of Stockholders Equity [Table Text Block] Restructuring and Related Cost, Incurred Cost Entity Filer Category Document Fiscal Year Focus Entity Public Float Common Stock, Dividends, Per Share, Cash Paid Entity Voluntary Filers Stockholders' Equity Note Disclosure [Text Block] Liabilities and Equity Business Description and Basis of Presentation [Text Block]