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Note 13 - Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 28, 2015	Jun. 29, 2014	Jun. 28, 2015	Jun. 29, 2014	Dec. 28, 2014
Note 13 - Income Taxes (Details) [Line Items]
Income Tax Expense (Benefit)	$ 17	$ 0	$ 172	$ 0
Effective Income Tax Rate Reconciliation, Percent			(9.90%)	0.00%
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent			35.00%	35.00%
Income Taxes Receivable	$ 2,100		$ 2,100		$ 2,200
Domestic Tax Authority [Member] | Internal Revenue Service (IRS) [Member] | Earliest Tax Year [Member]
Note 13 - Income Taxes (Details) [Line Items]
Income Tax Examination, Year under Examination			2009
Domestic Tax Authority [Member] | Internal Revenue Service (IRS) [Member] | Latest Tax Year [Member]
Note 13 - Income Taxes (Details) [Line Items]
Income Tax Examination, Year under Examination			2013
State and Local Jurisdiction [Member] | California Franchise Tax Board [Member] | Tax Year 2010 [Member]
Note 13 - Income Taxes (Details) [Line Items]
Income Tax Examination, Year under Examination	2010

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Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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Percentage of domestic federal statutory tax rate applicable to pretax income (loss).

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