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Note 14 - Financing Agreements - Revolving Facility Commitment Fees (Details) - Revolving Credit Facility [Member]
12 Months Ended
Dec. 31, 2021
Total Net Leverage Ratio is Less than or Equal to 1.00:1.00 [Member]  
Commitment fee 0.25%
Total Net Leverage Ratio is Greater than 1.00:1.00 but Less than or Equal to 2.00:1.00 [Member]  
Commitment fee 0.375%
Total Net Leverage Ratio is Greater than 2.00:1.00 [Member]  
Commitment fee 0.50%