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Note 8 - Debt (Details Narrative) - USD ($)
$ in Thousands
 6 Months Ended 12 Months Ended
May. 24, 2017
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Note 8 - Debt Details Narrative        
Line of Credit Facility, Maximum Borrowing Capacity   $ 20,000    
Letter of credit facility   $ 1,000    
Potential Credit Facility Increase (in Dollars) $ 35,000      
Line Of Credit, Maximum Borrowing Capacity, Percentage Of Eligible Accounts Receivable   85.00%    
Line Of Credit, Maximum Borrowing Capacity, Percentage Of Eligible Accounts Line Of Credit, Maximum Borrowing Capacity, Percentage Of Book Value Of Eligible Inventory   65.00%    
Line Of Credit, Maximum Borrowing Capacity, Percentage Of Appraised Net Orderly Liquidation Value Of Eligible Inventory   85.00%    
Line Of Credit, Minimum Additional Borrowing Capacity Allowed In addition to Accounts Receivable   $ 7,500    
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage   0.375%    
Line of Credit Facility, Amount Outstanding (in Dollars)   $ 0    
Line of Credit Facility, Interest Rate at Period End   2.43%    
Line of Credit Facility, Remaining Borrowing Capacity (in Dollars)   $ 8,927    
Cash and Cash Equivalents, at Carrying Value (in Dollars)   $ 14,393 $ 17,711 $ 16,066
Minimum fixed charge coverage ratio   115.00%