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Note 15 - Commitments and Contingencies (Details Textual) - USD ($)
Dec. 31, 2022
Dec. 31, 2021
Accrual for Environmental Loss Contingencies, Ending Balance $ 0 $ 0
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  
Inventories [Member]    
Purchase Obligation, Total 66,803,000  
Purchase Obligation, to be Paid, Year One 47,353,000  
Purchase Obligation, to be Paid, Year Two 19,450,000  
Capital Addition Purchase Commitments [Member]    
Purchase Obligation, Total $ 2,047,000