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Note 11 - Commitments and Contingencies (Details Textual) - USD ($)
Oct. 01, 2023
Dec. 31, 2022
Standard and Extended Product Warranty Accrual $ 781,000 $ 690,000
Accrual for Environmental Loss Contingencies, Ending Balance 0 $ 0
Inventories [Member]    
Purchase Obligation 41,758,000  
Purchase Obligation, to be Paid, Year One 16,455,000  
Purchase Obligation, to be Paid, Year Two 23,810,000  
Purchase Obligation, to be Paid, Year Three 1,493,000  
DOL [Member]    
Estimated Litigation Liability 575,000  
DOL [Member] | Minimum [Member]    
Loss Contingency, Estimate of Possible Loss 0  
DOL [Member] | Maximum [Member]    
Loss Contingency, Estimate of Possible Loss $ 58,000