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Note 12 - Income Taxes (Details Textual) - USD ($)
3 Months Ended 9 Months Ended
Sep. 30, 2015
Sep. 28, 2014
Sep. 30, 2015
Sep. 28, 2014
Dec. 28, 2014
Deferred Tax Liabilities Assumed in Merger [Member]          
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount     $ (12,700,000)    
Earliest Tax Year [Member] | Internal Revenue Service (IRS) [Member] | Domestic Tax Authority [Member]          
Income Tax Examination, Year under Examination     2009    
Latest Tax Year [Member] | Internal Revenue Service (IRS) [Member] | Domestic Tax Authority [Member]          
Income Tax Examination, Year under Examination     2013    
Tax Year 2010 [Member] | California Franchise Tax Board [Member] | State and Local Jurisdiction [Member]          
Income Tax Examination, Year under Examination     2010    
Operating Loss Carryforwards   $ 0   $ 0  
Income Tax Expense (Benefit) $ (12,874,000) $ (12,702,000) $ 0  
Effective Income Tax Rate Reconciliation, Percent     (109.60%) 0.00%  
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent     35.00%    
Income Taxes Receivable $ 2,300,000   $ 2,300,000    
Income Taxes Receivable, Noncurrent     $ 2,155,000