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Income Taxes (Details 2) (USD $) In Thousands, unless otherwise specified | Dec. 28, 2012 | Dec. 30, 2011
--- | --- | ---
Current deferred tax assets (liabilities): |  |
Allowance for doubtful accounts and sales returns | $ 89 | $ 90
Inventories | 190 | 270
Accrued vacation | 534 | 490
Other | (111) | (110)
State taxes | 3 | 3
Accrued legal judgment and other accrued expenses | 187 | 211
Valuation allowance | (1,331) | (1,426)
Total current deferred tax liabilities | (439) | (472)
Non-current deferred tax assets (liabilities): |  |
Net operating loss carryforwards | 51,533 | 51,334
Stock-based payments | 1,602 | 1,311
Valuation allowance | (49,762) | (50,145)
Total non-current deferred tax liabilities | (698) | (556)
Business Foreign and Amt Credit Carryforwards [Member] |  |
Non-current deferred tax assets (liabilities): |  |
Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Other | 844 | 788
Capitalized Rd [Member] |  |
Non-current deferred tax assets (liabilities): |  |
Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Other | 605 | 597
Contributions [Member] |  |
Non-current deferred tax assets (liabilities): |  |
Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Other | 58 | 160
Pensions [Member] |  |
Non-current deferred tax assets (liabilities): |  |
Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Other | 877 | 812
Depreciation and Amortization [Member] |  |
Non-current deferred tax assets (liabilities): |  |
Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Other | 202 | 54
Foreign Tax Withholding [Member] |  |
Non-current deferred tax assets (liabilities): |  |
Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Other | (885) | (711)
Foreign Earnings Not Permanently Reinvested [Member] |  |
Non-current deferred tax assets (liabilities): |  |
Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Other | (5,783) | (4,789)
Others [Member] |  |
Non-current deferred tax assets (liabilities): |  |
Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Other | $ 11 | $ 33

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