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Note 9 - Income Taxes (Details) - Deferred Income Tax Liabilities and Assets (USD $)
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Dec. 28, 2014
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Dec. 29, 2013
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Dec. 30, 2012
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Jan. 01, 2012
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Jan. 02, 2011
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| Deferred income tax assets: | |||||
| Net operating loss carryforwards | $ 22,829,000us-gaap_DeferredTaxAssetsOperatingLossCarryforwards | $ 28,703,000us-gaap_DeferredTaxAssetsOperatingLossCarryforwards | |||
| Capital loss carryforwards | 2,232,000us-gaap_DeferredTaxAssetsCapitalLossCarryforwards | 2,232,000us-gaap_DeferredTaxAssetsCapitalLossCarryforwards | |||
| Tax credit carryforwards | 4,290,000us-gaap_DeferredTaxAssetsTaxCreditCarryforwards | 2,532,000us-gaap_DeferredTaxAssetsTaxCreditCarryforwards | |||
| Property, plant and equipment and other assets | 3,593,000us-gaap_DeferredTaxAssetsPropertyPlantAndEquipment | 3,276,000us-gaap_DeferredTaxAssetsPropertyPlantAndEquipment | |||
| Reserves, allowances and accruals | 2,829,000us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsReserves | 2,640,000us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsReserves | |||
| 35,773,000us-gaap_DeferredTaxAssetsGross | 39,383,000us-gaap_DeferredTaxAssetsGross | ||||
| Valuation allowance | (35,345,000)us-gaap_DeferredTaxAssetsValuationAllowance | (37,870,000)us-gaap_DeferredTaxAssetsValuationAllowance | 0us-gaap_DeferredTaxAssetsValuationAllowance | 0us-gaap_DeferredTaxAssetsValuationAllowance | 0us-gaap_DeferredTaxAssetsValuationAllowance |
| Net deferred income tax assets | $ 428,000us-gaap_DeferredTaxAssetsNet | $ 1,513,000us-gaap_DeferredTaxAssetsNet |
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- Details
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- Definition
Amount before allocation of valuation allowances of deferred tax asset attributable to deductible capital loss carryforwards. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount after allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount before allocation of valuation allowances of deferred tax asset attributable to deductible operating loss carryforwards. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from property, plant, and equipment. No definition available.
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- Definition
The tax effect as of the balance sheet date of the amount of future tax deductions arising from all unused tax credit carryforwards which have been reduced by a valuation allowance. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from other reserves not separately disclosed. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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