Note 12 - Financing Agreements - Revolving Facility Commitment Fees (Details) - Revolving Credit Facility [Member]	3 Months Ended
	Mar. 31, 2022
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%