Consolidated Balance Sheets (Except Share Data) Consolidated Balance Sheets (Except Share Data) [Abstract] ASSETS ASSETS [Abstract] Current assets: Current assets: [Abstract] Cash and cash equivalents Trade accounts receivable, net of allowance for doubtful accounts of $147 and $150, respectively Inventories Deferred tax assets Prepaid expenses and other current assets Total current assets Property and equipment: Property and equipment: [Abstract] Machinery and equipment Leasehold improvements Gross property and equipment Less: accumulated depreciation Net property and equipment Deferred tax assets Goodwill Intangible assets, net Restricted certificates of deposit Other assets Total assets LIABILITIES AND STOCKHOLDERS' EQUITY LIABILITIES AND STOCKHOLDERS' EQUITY [Abstract] Current liabilities: Current liabilities: [Abstract] Accounts payable Accrued wages and benefits Accrued sales commissions Accrued rent Accrued professional fees Accrued warranty Customer deposits Other current liabilities Total current liabilities Deferred rent, net of current portion Total liabilities Commitments and Contingencies (Notes 9 and 11) Stockholders' equity: Stockholders' equity: [Abstract] Preferred stock, $0.01 par value; 5,000,000 shares authorized; no shares issued or outstanding Common stock, $0.01 par value; 20,000,000 shares authorized; 10,463,255 and 10,464,505 shares issued, respectively Addtional paid-in capital Accumulated deficit Accumulated other comprehensive earnings Treasury stock, at cost; 76,328 and 119,029 shares, respectively Total stockholders' equity Total liabilities and stockholders' equity Allowance for doubtful accounts, respectively (in Dollars) Preferred stock par value (in Dollars per share) Preferred stock, shares authorized Preferred stock, shares issued Preferred stock, shares outstanding Common stock, par value (in Dollars per share) Common stock, shares authorized Common stock, shares issued Treasury stock, at cost, shares, respectively Consolidated Statements of Operations (Unaudited) Consolidated Statements of Operations (Unaudited) [Abstract] Net revenues Cost of revenues Gross margin Operating expenses: Operating expenses: [Abstract] Selling expense Engineering and product development expense General and administrative expense Total operating expenses Operating income Other income (expense): Other income (expense): [Abstract] Interest income Interest expense Reflects the sum of all expenses, other revenue and income recognized by the entity in the period not otherwise specified in the income statement. Other Total other income (expense) Earnings before income tax expense (benefit) Income tax expense (benefit) Net earnings Net earnings per common share - basic (in Dollars per share) Weighted average common shares outstanding - basic (in Shares) Net earnings per common share - diluted (in Dollars per share) Weighted average common and common share equivalents outstanding - diluted (in Shares) Consolidated Statements of Comprehensive Earnings (Unaudited) Consolidated Statements of Comprehensive Earnings (Unaudited) [Abstract] Net earnings Foreign currency translation adjustments Comprehensive earnings Consolidated Statement of Stockholders' Equity (Unaudited) Consolidated Statement of Stockholders' Equity (Unaudited) [Abstract] Balance Balance Balance (in Shares) Balance (in Shares) Net earnings Other comprehensive loss Amortization of deferred compensation related to restricted stock Stock options exercised Stock options exercised (in Shares) Forfeiture of non-vested shares of restricted stock (in Shares) Issuance of 42,701 shares to satisfy profit sharing liability Issuance of shares to satisfy profit sharing liability Consolidated Statements of Cash Flows (Unaudited) Consolidated Statements of Cash Flows (Unaudited) [Abstract] CASH FLOWS FROM OPERATING ACTIVITIES CASH FLOWS FROM OPERATING ACTIVITIES [Abstract] Net earnings Adjustments to reconcile net earnings to net cash provided by operating activities: Adjustments to reconcile net earnings to net cash provided by operating activities: [Abstract] Depreciation and amortization Foreign exchange (gain) loss Amortization of deferred compensation related to restricted stock The value of stock issued to fund the profit sharing contribution for the period. Profit sharing expense funded through the issuance of treasury stock (Gain) loss on sale of property and equipment The cash inflow from sale of machinery and equipment net of any gain on sale. Proceeds from sale of demonstration equipment, net of gain Deferred income tax benefit Changes in assets and liabilities: Changes in assets and liabilities: [Abstract] Trade accounts receivable Inventories Prepaid expenses and other current assets Restricted certificates of deposit Other assets Accounts payable Accrued wages and benefits Accrued sales commissions Accrued rent Accrued professional fees Accrued warranty Accrued restructuring and other charges Customer deposits Other current liabilities Deferred rent, net of current portion Net cash provided by operating activities CASH FLOWS FROM INVESTING ACTIVITIES CASH FLOWS FROM INVESTING ACTIVITIES [Abstract] Purchase of property and equipment Proceeds from sale of property and equipment Net cash used in investing activitites CASH FLOWS FROM FINANCING ACTIVITIES CASH FLOWS FROM FINANCING ACTIVITIES [Abstract] Proceeds from stock options exercised Net cash provided by financing activities Effects of exchange rates on cash Net cash provided by all activities Cash and cash equivalents at beginning of period Cash and cash equivalents at end of period Cash payments for: Cash payments for: [Abstract] Domestic and foreign income taxes Interest SUPPLEMENTAL DISCLOSURE OF NON-CASH INVESTING AND FINANCING ACTIVITIES: SUPPLEMENTAL DISCLOSURE OF NON-CASH INVESTING AND FINANCING ACTIVITIES: [Abstract] Issuance of non-vested shares of restricted stock Forfeiture of non-vested shares of restricted stock Note 1 - Nature of Operations Nature of Operations [Text Block] Note 2 - Summary of Significant Accounting Policies Significant Accounting Policies [Text Block] Note 3 - Goodwill and Intangibles Assets Goodwill and Intangible Assets Disclosure [Text Block] Note 4 - Restructuring and Other Charges Restructuring and Related Activities Disclosure [Text Block] Note 5 - Major Customers Schedule of Revenue by Major Customers by Reporting Segments [Table Text Block] Note 6 - Inventories Inventory Disclosure [Text Block] Note 7 - Debt Debt Disclosure [Text Block] Note 8 - Leasehold Improvements and Deferred Rent Operating Leases of Lessee Disclosure [Table Text Block] Note 9 - Guarantees Schedule of Guarantor Obligations [Table Text Block] Note 10 - Stock-Based Compensation Disclosure of Compensation Related Costs, Share-based Payments [Text Block] Note 11 - Employee Benefit Plans Pension and Other Postretirement Benefits Disclosure [Text Block] Note 12 - Segment Information Segment Reporting Disclosure [Text Block] Common Stock [Member] Scenario, Unspecified [Domain] Accumulated Other Comprehensive Income (Loss) [Member] Treasury Stock [Member] Statement, Scenario [Axis] Additional Paid-in Capital [Member] Statement, Equity Components [Axis] Retained Earnings [Member] Document and Entity Information [Abstract] Other Assets, Current Entity Common Stock, Shares Outstanding Stock Issued During Period, Value, Restricted Stock Award, Forfeitures Increase (Decrease) in Accounts Receivable Foreign Currency Transaction Gain (Loss), before Tax Payments to Acquire Property, Plant, and Equipment Entity Central Index Key Payments to Acquire Restricted Certificates of Deposit Increase (Decrease) in Deferred Rent Receivables Increase (Decrease) in Other Accrued Liabilities Liabilities, Current Operating Expenses Increase (Decrease) in Accrued Salaries Net Cash Provided by (Used in) Investing Activities Net Cash Provided by (Used in) Operating Activities Comprehensive Income (Loss), Net of Tax, Attributable to Parent Document Period End Date Property, Plant and Equipment, Net Increase (Decrease) in Other Operating Liabilities Increase (Decrease) in Reserve for Commissions, Expense and Taxes Increase (Decrease) in Accounts Payable Restructuring and Related Cost, Incurred Cost Increase (Decrease) in Prepaid Expense and Other Assets Amendment Flag Increase (Decrease) in Customer Deposits Deferred Tax Assets, Net, Current Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Increase (Decrease) in Other Current Liabilities Net Cash Provided by (Used in) Financing Activities Document Type Interest Expense, Debt Assets Amendment Description Increase (Decrease) in Other Operating Assets and Liabilities, Net Gain (Loss) on Sale of Property Plant Equipment Stock Issued During Period, Value, Stock Options Exercised