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Note 5 - Long-term Debt (Details Textual) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
May 17, 2019
Jul. 03, 2021
Jul. 03, 2021
Jun. 27, 2020
Repayments of Long-term Debt, Total     $ 4,375 $ 26,250
Credit Agreement, May 17, 2019 [Member] | Revolving Credit Facility [Member]        
Debt Instrument, Term (Year) 5 years      
Line of Credit Facility, Maximum Borrowing Capacity $ 75,000      
Debt Instrument, Interest Rate, Effective Percentage   1.35% 1.35%  
Line of Credit Facility, Commitment Fee Percentage     0.20%  
Credit Agreement, May 17, 2019 [Member] | Secured Term Loan [Member]        
Debt Instrument, Face Amount $ 175,000      
Repayments of Long-term Debt, Total   $ 4,400    
Debt Instrument, Interest Rate, Effective Percentage   1.57% 1.57%