Note 15 - Income Taxes (Details) - Deferred Tax Assets and Liabilites (USD $) In Thousands, unless otherwise specified	Jan. 03, 2015	Dec. 28, 2013
Deferred Tax Assets and Liabilites [Abstract]
Allowance for doubtful accounts	$ 358	$ 391
Acquisition amortization, net	1,056	1,642
Reserves and accruals	301	1,556
Other	511us-gaap_DeferredTaxAssetsOther	338us-gaap_DeferredTaxAssetsOther
Total deferred tax assets	2,226us-gaap_DeferredTaxAssetsGross	3,927us-gaap_DeferredTaxAssetsGross
Prepaid expense deferral	(343)	(367)
Bonus depreciation to be reversed	(318)	(118)
Canada deferred tax liability, net	(160)	(132)
Total deferred tax liabilities	(821)us-gaap_DeferredIncomeTaxLiabilities	(617)us-gaap_DeferredIncomeTaxLiabilities
Total deferred tax assets, net	$ 1,405us-gaap_DeferredTaxAssetsLiabilitiesNet	$ 3,310us-gaap_DeferredTaxAssetsLiabilitiesNet

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Amount of deferred tax liability attributable to taxable temporary differences.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards.

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Amount after allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards, net of deferred tax liability attributable to taxable temporary differences.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from reserves and accruals.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from the allowance for doubtful accounts.

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Amount of deferred tax liability attributable to taxable temporary differences from property, plant, and equipment.

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Amount of deferred tax liability attributable to taxable temporary differences from undistributed earnings of subsidiaries and other recognized entities not within the country of domicile of the entity.

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