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Note 3 - Share Repurchase Program (Details Textual) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended 25 Months Ended
Jun. 26, 2016
Jun. 26, 2016
Jun. 02, 2016
May 01, 2014
Treasury Stock, Value, Acquired, Cost Method $ 603 $ 603 $ 10,480  
Treasury Stock, Shares, Acquired 149,904 149,904 2,592,095  
Maximum [Member]        
Stock Repurchase Program, Number of Shares Authorized to be Repurchased     3,400,000 1,800,000