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Note 9 - Debt - Summary of Debt (Details) - USD ($)
$ in Thousands
Dec. 31, 2020
Dec. 31, 2019
Asset-based revolving credit facility due December 8, 2022 $ 160,609 $ 192,925
Total debt 160,609 192,925
Less current amount 0 0
Total long-term debt 160,609 192,925
Asset Based Revolving Credit Facility Due December 8, 2022 [Member]    
Asset-based revolving credit facility due December 8, 2022 $ 160,609 $ 192,925