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Note 3 - Business Combination (Details Textual) - USD ($)
Aug. 15, 2014
Jun. 27, 2015
Mar. 28, 2015
Dec. 27, 2014
Sep. 27, 2014
ASW Acquisition [Member]          
Business Combination, Consideration Transferred $ 33,500,000        
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Consideration Transferred $ 480,000        
Accounts Payable and Accrued Liabilities [Member]          
Restructuring Reserve   $ 600,000     $ 500,000
Other Liabilities [Member]          
Restructuring Reserve   500,000     700,000
Scenario, Forecast [Member]          
Restructuring Reserve   200,000      
Restructuring Reserve   $ 1,121,000 $ 1,189,000 $ 1,155,000 $ 1,208,000