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Note 8 - Line of Credit (Details Textual) - USD ($)
$ in Thousands
Oct. 01, 2022
Jan. 01, 2022
Oct. 02, 2021
Oct. 18, 2019
Long-Term Line of Credit, Noncurrent $ 1,160 $ 14,151    
Citizens Bank of Pennsylvania [Member] | Revolving Credit Facility [Member]        
Line of Credit Facility, Maximum Borrowing Capacity       $ 45,000
Debt Instrument, Interest Rate, Effective Percentage 2.70%   2.10%  
Long-Term Line of Credit, Noncurrent $ 1,200 14,200    
Letters of Credit Outstanding, Amount 1,900 1,900    
Line of Credit Facility, Remaining Borrowing Capacity $ 41,900 $ 28,900