Accounting Changes And Error Corrections [Text Block] Recent Accounting Pronouncements Accounts Payable Current Accounts payable Accounts Receivable Net Current Accounts receivable - net of allowances of $438 and $387 as of September 30, 2012 and December 31, 2011, respectively Accrued Liabilities Current Accrued liabilities Accrued Warranties And Related Costs Table Disclosure [TextBlock] Accrued Warranties And Related Costs Table Disclosure [Text Block] Component of Accrued Warranty Expenses Accrued Warranty Costs Accrued Warranty Costs Warranty costs incurred Accumulated Other Comprehensive Income Loss Net Of Tax Accumulated other comprehensive income Adjustments To Reconcile Net Income Loss To Cash Provided By Used In Operating Activities [Abstract] Adjustments to reconcile net loss to net cash used in operating activities: Allowance For Doubtful Accounts Receivable Current Accounts receivable, allowances Amendment Flag Amendment Flag Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount Anti-Dilutive shares excluded from the computation of diluted earnings per share Antidilutive Securities Excluded From Computation Of Earnings Per Share By Antidilutive Securities [Axis] Antidilutive Securities Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Antidilutive Securities Name [Domain] Antidilutive Securities, Name [Domain] Assets Total Assets Assets [Abstract] ASSETS Assets Current Total current assets Assets Current [Abstract] Current Assets Award Type [Axis] Award Type Basis Of Accounting Basis of Accounting C A Canada Cash And Cash Equivalents At Carrying Value Cash and cash equivalents end of period Cash and cash equivalents beginning of period Cash and cash equivalents Cash And Cash Equivalents Period Increase Decrease NET INCREASE IN CASH AND CASH EQUIVALENTS Cash Cash Equivalents And Investments Fair Value Disclosure Cash Cash Equivalents And Investments Fair Value Disclosure Cash Equivalents-Overnight Investments Commitments And Contingencies Commitments and contingencies Common Stock [Member] Common Stock Common Stock Par Or Stated Value Per Share Common stock, par value Common Stock Shares Authorized Common stock, shares authorized Common Stock Shares Issued Common stock, shares issued Common Stock Shares Outstanding Common stock, shares outstanding Common Stock Value Common stock, $.001 par value: 10,000,000 shares authorized; 4,927,931 and 4,781,597 shares issued and outstanding at September 30, 2012 and December 31, 2011, respectively Comprehensive Income Net Of Tax Total comprehensive earnings (loss) Cost Of Goods Sold Cost of sales, including distribution costs Current Fiscal Year End Date Current Fiscal Year End Date Deferred Income Tax Expense Benefit Deferred income taxes Depreciation And Amortization Depreciation and amortization Disclosure - Component of Accrued Warranty Expenses [Abstract] Disclosure Component Of Accrued Warranty Expenses [Abstract] Disclosure - Component of Accrued Warranty Expenses [Abstract] Disclosure - Component of Net Sales by Region [Abstract] Disclosure Component Of Net Sales By Region [Abstract] Disclosure - Component of Net Sales by Region [Abstract] Disclosure - Computation of Diluted Earning Per Share with Exclusion of Antidilutive Securities [Abstract] Disclosure Computation Of Diluted Earning Per Share With Exclusion Of Antidilutive Securities [Abstract] Disclosure - Computation of Diluted Earning Per Share with Exclusion of Antidilutive Securities [Abstract] Disclosure Earning Per Share Additional Information [Abstract] Disclosure Earning Per Share Additional Information [Abstract] Disclosure Earning Per Share Additional Information [Abstract] Disclosure - Fair Value Measurements of Financial Assets and Liabilities [Abstract] Disclosure Fair Value Measurements Of Financial Assets And Liabilities [Abstract] Disclosure - Fair Value Measurements of Financial Assets and Liabilities [Abstract] Disclosure - Geographic Areas Disclosure - Additional Information [Abstract] Disclosure Geographic Areas Disclosure Additional Information [Abstract] Disclosure - Geographic Areas Disclosure - Additional Information [Abstract] Disclosure - Leases of Lessee Disclosure - Additional Information [Abstract] Disclosure Leases Of Lessee Disclosure Additional Information [Abstract] Disclosure - Leases of Lessee Disclosure - Additional Information [Abstract] Disclosure Of Compensation Related Costs Share Based Payments [Text Block] Stock-Based Compensation Disclosure - Operating Leases Future Minimum Rent Payable [Abstract] Disclosure Operating Leases Future Minimum Rent Payable [Abstract] Disclosure - Operating Leases Future Minimum Rent Payable [Abstract] Disclosure Stock Based Compensation Additional Information [Abstract] Disclosure Stock Based Compensation Additional Information [Abstract] Disclosure Stock Based Compensation Additional Information [Abstract] Disclosure - Summary of Restricted Share Activity [Abstract] Disclosure Summary Of Restricted Share Activity [Abstract] Disclosure - Summary of Restricted Share Activity [Abstract] Disclosure - Summary of Share Based Compensation Option Nonvested [Abstract] Disclosure Summary Of Share Based Compensation Option Nonvested [Abstract] Disclosure - Summary of Share Based Compensation Option Nonvested [Abstract] Disclosure Summary Of Stock Option Activity [Abstract] Disclosure Summary Of Stock Option Activity [Abstract] Disclosure Summary Of Stock Option Activity [Abstract] Disclosure - Weighted Average Assumption For Fair Value Stock Option Table [Abstract] Disclosure Weighted Average Assumption For Fair Value Stock Option Table [Abstract] Disclosure - Weighted Average Assumption For Fair Value Stock Option Table [Abstract] Document Documentand Entity Information [Abstract] Document Documentand Entity Information [Abstract] Document Documentand Entity Information [Abstract] Document Fiscal Period Focus Document Fiscal Period Focus Document Fiscal Year Focus Document Fiscal Year Focus Document Information [Line Items] Document Information [Line Items] Document Period End Date Document Period End Date Document Type Document Type Earnings Per Share Basic Basic earnings (loss) per share Earnings Per Share Basic And Diluted Denominator [Abstract] Earnings Per Share Basic And Diluted Denominator [Abstract] Denominator: Earnings Per Share Basic And Diluted Numerator [Abstract] Earnings Per Share Basic And Diluted Numerator [Abstract] Numerator: Earnings Per Share Diluted Diluted earnings (loss) per share Earnings Per Share [Line Items] Earnings Per Share [Line Items] Earnings Per Share [Line Items] Earnings Per Share [Table] Earnings Per Share [Table] Earnings Per Share [Table] Earnings Per Share [Text Block] Earnings Per Share Effect Of Exchange Rate On Cash And Cash Equivalents Effect of exchange rate changes on cash Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Unrecognized compensation cost related to the nonvested options Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Period For Recognition 1 Unrecognized compensation costs are expected to be recognized over a weighted average period (years) Entities [Table] Entities [Table] Entity Central Index Key Entity Central Index Key Entity Common Stock Shares Outstanding Entity Common Stock, Shares Outstanding Entity [Domain] Entity [Domain] Entity Filer Category Entity Filer Category Entity Registrant Name Entity Registrant Name Equity Incentive Plan [Member] Equity Incentive Plan [Member] Previously Approved Plans Equity Incentive Plan Twenty Twelve [Member] Equity Incentive Plan Twenty Twelve [Member] Equity Incentive Plan Twenty Twelve Excess Tax (Charge) Benefit from Share based Compensation, Financing Activities Excess Tax Charge Benefit From Share Based Compensation Financing Activities Tax (shortfall) benefit from stock-based payments Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items] Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items] Fair Value, Assets and Liabilities Measured on Recurring Basis [Table] Fair Value Assets And Liabilities Measured On Recurring Basis [Table] Fair Value, Assets and Liabilities Measured on Recurring Basis [Table] Fair Value Assets And Liabilities Measured On Recurring Basis [Text Block] Fair Value Assets And Liabilities Measured On Recurring Basis [Text Block] Fair Value Measurement of Financial Assets and Liabilities Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation By Asset Class [Domain] Fair Value by Asset Class [Domain] Fair Value By Asset Class [Axis] Asset Class Fair Value By Fair Value Hierarchy Level [Axis] Fair Value, Hierarchy Fair Value Inputs Level 2 [Member] Fair Value, Inputs, Level 2 Fair Value Measurements Fair Value Hierarchy [Domain] Fair Value, Measurements, Fair Value Hierarchy [Domain] Gain Loss On Sale Of Property Plant Equipment Gain on sale of property and equipment This element may be used to disclose in its entirety the names of foreign countries from which revenue is material and the amount of revenue from external customers attributed to those countries and the names of foreign countries in which material long-lived assets other than financial instruments, long-term customer relationships of a financial institution, mortgage and other servicing rights, deferred policy acquisition costs, and deferred tax assets are located, and amount of such long-lived assets located in that country or foreign geographic area. Geographic Areas Disclosure [Text Block] Geographic Areas Disclosure Gross Profit Gross profit Incentive Compensation Plans Employees [Axis] Incentive Compensation Plans Employees [Axis] Incentive Compensation Plans Employees Incentive Compensation Plans Employees [Domain] Incentive Compensation Plans Employees [Domain] Incentive Compensation Plans Employees [Domain] Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest Earnings (loss) before income taxes Income Statement [Abstract] Income Statement [Abstract] Income Tax Expense Benefit Income tax provision (benefit) Increase Decrease In Accounts Payable Accounts payable Increase Decrease In Accounts Receivable Accounts receivable Increase Decrease In Accrued Liabilities Accrued liabilities Increase Decrease In Inventories Inventories Increase Decrease In Operating Capital [Abstract] Changes in assets and liabilities: Increase Decrease In Other Current Assets Other current assets Interest Expense Interest Inventory Net Inventories Leases Of Lessee Disclosure [Text Block] Leases of Lessee Disclosure Legal Entity [Axis] Legal Entity [Axis] Liabilities Total Liabilities Liabilities And Stockholders Equity Total Liabilities and Stockholders' Equity Liabilities And Stockholders Equity [Abstract] LIABILITIES AND STOCKHOLDERS' EQUITY Liabilities Current Total current liabilities Liabilities Current [Abstract] Current Liabilities Long Term Debt Noncurrent Long-Term Obligations Maximum [Member] Maximum Minimum [Member] Minimum Nature Of Operations Nature of Operations Net Cash Provided By Used In Financing Activities Net cash provided by financing activities Net Cash Provided By Used In Financing Activities [Abstract] Cash flows from financing activities: Net Cash Provided By Used In Investing Activities Net cash used in investing activities Net Cash Provided By Used In Investing Activities [Abstract] Cash flows from investing activities: Net Cash Provided By Used In Operating Activities Net cash (used in) provided by operating activities Net Cash Provided By Used In Operating Activities [Abstract] Cash flow from operating activities: Net Income Loss Net earnings (loss) Net earnings (loss) Net Sales Summary by Segment [Table Text Block] Net Sales Summary By Segment [Text Block] Component of Net Sales by Region Nonoperating Income Expense Nonoperating Income (Expense) Nonoperating Income Expense [Abstract] Other (income) expense Non Vested Stock Options [Member] Non Vested Stock Options [Member] Non Vested Stock Options Number Of Operating Segments Number of operating segments Office Facilities [Member] Office Facilities [Member] Office and Warehouse Operating Income Loss Operating income (loss) Operating Leased Assets [Line Items] Operating Leased Assets [Line Items] Operating Lease Expiration Period Operating Lease Expiration Period Lease, expired period Operating Leases Future Minimum Payments Due Operating Leases, Future Minimum Payments Due, Total Operating Leases Future Minimum Payments Due Current 2012 (remaining three months) Operating Leases Future Minimum Payments Due In Five Years 2016 Operating Leases Future Minimum Payments Due In Four Years 2015 Operating Leases Future Minimum Payments Due In Three Years 2014 Operating Leases Future Minimum Payments Due In Two Years 2013 Operating Leases Future Minimum Payments Due Thereafter Thereafter Other Assets Current Other current assets Other Assets Noncurrent Other Assets Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax Foreign currency translation adjustment Other Comprehensive Income Loss Net Of Tax Period Increase Decrease [Abstract] Other comprehensive income (loss): Other Nonoperating Income Expense Other Payments For Proceeds From Other Investing Activities Increase in other assets Payments To Acquire Property Plant And Equipment Capital expenditures Preferred Stock Par Or Stated Value Per Share Preferred stock, par value Preferred Stock Shares Authorized Preferred stock, shares authorized Preferred Stock Shares Issued Preferred stock, issued Preferred Stock Shares Outstanding Preferred stock, outstanding Preferred Stock Value Preferred stock, $.001 par value: 2,000,000 shares authorized; none issued or outstanding: Proceeds From Issuance Of Shares Under Incentive And Share Based Compensation Plans Including Stock Options Issuance of common stock pursuant to employee stock option and purchase plans Proceeds From Lines Of Credit Borrowings under line of credit agreement Proceeds From Sale Of Property Plant And Equipment Proceeds from sale of property and equipment Product Warranty Accrual Accrued warranty balance - ending balance Accrued warranty balance - beginning balance Product Warranty Accrual, Current, Provisions Product Warranty Accrual Current Provisions Provision for warranty Product Warranty Disclosure [Text Block] Warranty Reserve Property Plant And Equipment By Type [Axis] Property, Plant and Equipment, Type Property Plant And Equipment Net Property, Plant, and Equipment, net Property Plant And Equipment Type [Domain] Property, Plant and Equipment, Type [Domain] Range [Axis] Range Range [Member] Range [Domain] Repayments Of Lines Of Credit Repayments under line of credit agreement Restricted Stock [Member] Restricted Stock Retained Earnings Accumulated Deficit Retained earnings Sales Revenue Net Net sales Schedule Of Antidilutive Securities Excluded From Computation Of Earnings Per Share [Table] Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table] Schedule Of Earnings Per Share Diluted By Common Class [Text Block] Computation of Diluted Earning Per Common Share Schedule Of Fair Value Assets And Liabilities Measured On Recurring Basis Table [Text Block] Summary of Fair Value Measurement of Financial Assets and Liabilities Schedule Of Future Minimum Rental Payments For Operating Leases Table [Text Block] Operating Leases Future Minimum Rent Payable Schedule Of Operating Leased Assets [Table] Schedule of Operating Leased Assets [Table] Schedule of Operating Leases [Line Items] Schedule Of Operating Leases [Line Items] Schedule of Operating Leases [Line Items] Schedule of Operating Leases [Table] Schedule Of Operating Leases [Table] Schedule of Operating Leases [Table] Schedule Of Segment Reporting Information By Segment [Table] Schedule of Segment Reporting Information, by Segment [Table] Schedule of Share based Compensation Arrangements by Share based Payment Award, Equity Instruments, Other Than Options, Restricted Stock Units [Line Items] Schedule Of Share Based Compensation Arrangements By Share Based Payment Award Equity Instruments Other Than Options Restricted Stock Units [Line Items] Schedule of Share based Compensation Arrangements by Share based Payment Award, Equity Instruments, Other Than Options, Restricted Stock Units [Line Items] Schedule of Share based Compensation Arrangements by Share based Payment Award, Equity Instruments, Other Than Options, Restricted Stock Units [Table] Schedule Of Share Based Compensation Arrangements By Share Based Payment Award Equity Instruments Other Than Options Restricted Stock Units [Table] Schedule of Share based Compensation Arrangements by Share based Payment Award, Equity Instruments, Other Than Options, Restricted Stock Units [Table] Schedule Of Share Based Compensation Arrangements By Share Based Payment Award [Table] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule Of Share Based Compensation Restricted Stock Awards Activity [Table Text Block] Schedule Of Share Based Compensation Restricted Stock Awards Activity Table [Text Block] Summary of Restricted Share Activity Schedule Of Share Based Compensation Stock Options Activity Table [Text Block] Summary of Stock Option Activity Schedule of Weighted Average Assumptions for Fair Values of Stock Options[Line Items] Schedule Of Weighted Average Assumptions For Fair Values Of Stock Options [Line Items] Schedule of Weighted Average Assumptions for Fair Values of Stock Options[Line Items] Schedule of Weighted Average Assumptions for Fair Values of Stock Options [Table] Schedule Of Weighted Average Assumptions For Fair Values Of Stock Options [Table] Schedule of Weighted Average Assumptions for Fair Values of Stock Options [Table] Segment Geographical [Domain] Segment, Geographical [Domain] Segment Reporting Information [Line Items] Segment Reporting Information [Line Items] Segment Reporting Information [Table] Segment Reporting Information [Table] Segment Reporting Information [Table] Selling General And Administrative Expense Selling, general and administrative expenses Share Based Compensation Share-base compensation expense Stock-based compensation expense Share Based Compensation Arrangement by Share Based Payment Award, Available for Grant, Cancelled in Period Share Based Compensation Arrangement By Share Based Payment Award Available For Grant Cancelled In Period Shares ceased to be issuable Share Based Compensation Arrangement By Share Based Payment Award Award Vesting Period 1 Vesting period Share Based Compensation Arrangement by Share Based Payment Award Equity Instruments Other Than Options Expected to Vest Outstanding Number Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Expected To Vest Outstanding Number Restricted shares outstanding Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeited In Period Forfeited Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeitures Weighted Average Grant Date Fair Value Forfeited Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period Granted Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period Weighted Average Grant Date Fair Value Granted Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Number Unvested restricted shares outstanding Share Based Compensation Arrangement By Share Based Payment Award, Equity Instruments Other than Options Outstanding, Number Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Outstanding Number Ending Balance Beginning Balance Restricted shares outstanding Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Rollforward [Abstract] Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Rollforward [Abstract] Shares Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period Vested Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period Weighted Average Grant Date Fair Value Vested Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Weighted Average Grant Date Fair Value Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Weighted Average Grant Date Fair Value Ending Balance Beginning Balance Share based Compensation Arrangement by Share based Payment Award, Equity Instruments Other than Options, Weighted Average Grant Date Fair Value [Abstract] Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Weighted Average Grant Date Fair Value [Abstract] Weighted Average Grant-Date Fair Value Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions And Methodology [Abstract] Stock Incentive Plans: Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate Expected dividend yields Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Expected Term 1 Expected lives Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate Risk-free interest rate