Statement of Financial Position [Abstract] Cash and cash equivalents Cash and cash equivalents, beginning of period Cash and cash equivalents, end of period 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 $2,861 and $2,779, respectively Other assets Total assets Accounts payable Accrued liabilities Estimated Litigation Liability, Current Income taxes payable Deferred revenue Total current liabilities Deferred revenue, net of current portion Deferred rent, net of current portion Other liabilities Total liabilities Common stock, $0.01 par value, 20,000,000 shares authorized; 11,181,581 and 11,170,881 shares issued, respectively; 7,729,922 and 7,782,292 shares outstanding, respectively Common stock par value (in Dollars per share) Common stock, shares authorized Common stock, shares issued Common stock, shares outstanding Additional paid-in capital Retained earnings Accumulated other comprehensive loss, net of tax Treasury stock, at cost, 3,451,659 and 3,388,589 shares respectively Total shareholders’ equity Total liabilities and shareholders’ equity Income Statement [Abstract] Net sales Cost of sales Gross profit Engineering, design and product development Selling and marketing General and administrative Legal fees associated with lawsuit (Note 7) Operating income Interest, net Other, net Income before income taxes Income tax provision Net income Net income Net income (in Dollars) Basic (in Dollars per share) Diluted (in Dollars per share) Basic (in Shares) Basic: Weighted average common shares outstanding Diluted (in Shares) Diluted: Weighted average common and common equivalent shares outstanding Dividends declared and paid per common share: (in Dollars per share) Statement of Comprehensive Income [Abstract] Foreign currency translation adjustment, net of tax Comprehensive income Statement of Cash Flows [Abstract] Share-based compensation expense Depreciation and amortization Deferred income tax provision (benefit) Foreign currency transaction gains Accounts receivable Inventories Prepaid income taxes Other current and long term assets Accounts payable Accrued liabilities and other liabilities Net cash (used in) provided by operating activities Capital expenditures Net cash used in investing activities Payment of dividends on common stock Purchases of common stock for treasury Net cash used in financing activities Effect of exchange rate changes on cash and cash equivalents (Decrease) Increase in cash and cash equivalents Capital expenditures funded by accounts payable Disclosure Text Block [Abstract] Inventory Disclosure [Abstract] Inventory components [Abstract] Raw materials and purchased component parts Work-in-process Finished goods Product Warranties Disclosures [Abstract] Warranty Activity [Abstract] Balance, beginning of period Balance, end of period Warranties issued Warranty settlements Earnings Per Share [Abstract] Earnings Per Share Reconciliation [Abstract] Add: Dilutive effect of outstanding options and restricted stock units as determined by the treasury stock method Stockholders' Equity Note [Abstract] Income Tax Disclosure [Abstract] Commitments and Contingencies Disclosure [Abstract] Accounting Policies [Abstract] Current assets: Intangible assets, net of accumulated amortization of $2,861 and $2,779, respectively (in Dollars) Liabilities and Shareholders’ Equity: Current liabilities: Shareholders’ equity: Operating expenses: Interest and other (expense) income: Net income per common share: Shares used in per-share calculation: Cash flows from operating activities: Adjustments to reconcile net income to net cash (used in) provided by operating activities: Changes in operating assets and liabilities: Cash flows from investing activities: Cash flows from financing activities: Supplemental schedule of non-cash investing activities: Business Description and Basis of Presentation [Text Block] Inventory Disclosure [Text Block] Schedule of Inventory, Current [Table Text Block] Product Warranty Disclosure [Text Block] Schedule of Product Warranty Liability [Table Text Block] Earnings Per Share [Text Block] Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Shares: Net income per common share: Stockholders' Equity Note Disclosure [Text Block] Income Tax Disclosure [Text Block] Commitments and Contingencies Disclosure [Text Block] Significant Accounting Policies [Text Block] Product Warranty Accrual, Current Product Warranty Accrual, Noncurrent Dilutive Securities, Effect on Basic Earnings Per Share, Options and Restrictive Stock Units Unrecognized Tax Benefits that Would Impact Effective Tax Rate Litigation Settlement, Amount Loss Contingency, Settlement Agreement, Terms Loss Contingency Accrual, Provision Document and Entity Information [Abstract] NetIncomePerCommonShareAbstract0 Entity Central Index Key Amendment Flag Entity Public Float Document Period End Date Entity Registrant Name Liabilities Nonoperating Income (Expense) Standard and Extended Product Warranty Accrual Trading Symbol Comprehensive Income (Loss), Net of Tax, Attributable to Parent Net Cash Provided by (Used in) Investing Activities Other Comprehensive Income (Loss), Foreign Currency Translation Gain (Loss) Arising During Period, Tax Document Fiscal Period Focus Entity Current Reporting Status Payments of Ordinary Dividends, Common Stock Document Type Stockholders' Equity Attributable to Parent Document Fiscal Year Focus Assets Treasury Stock, Value Liabilities, Noncurrent Increase (Decrease) in Accounts Payable Entity Common Stock, Shares Outstanding Payments to Acquire Property, Plant, and Equipment Assets, Noncurrent Liabilities and Equity Current Fiscal Year End Date Assets, Current Deferred Tax Assets, Net of Valuation Allowance, Noncurrent Liabilities, Current Increase (Decrease) in Inventories Entity Voluntary Filers Entity Filer Category Entity Well-known Seasoned Issuer Deferred Tax Assets, Net of Valuation Allowance, Current Net Cash Provided by (Used in) Operating Activities Net Cash Provided by (Used in) Financing Activities Payments for Repurchase of Common Stock Operating Expenses Amendment Description Statement [Table] Statement [Line Items] Scenario [Axis]