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Note 13 - Line of Credit and PPP Loans (Details Textual) - USD ($)
$ in Thousands
1 Months Ended
May 31, 2020
Nov. 30, 2019
Dec. 30, 2020
Paycheck Protection Program CARES Act [Member]      
Proceeds from Issuance of Long-term Debt, Total $ 2,800    
Revolving Credit Facility [Member]      
Line of Credit Facility, Maximum Borrowing Capacity   $ 5,000  
Long-term Line of Credit, Total     $ 0
Revolving Credit Facility [Member] | LIBOR Daily Floating Rate [Member]      
Debt Instrument, Basis Spread on Variable Rate   2.00%