Note 5 - Bank Debt - Maximum Leverage Ratio (Details) - Credit Agreement [Member]	Mar. 31, 2022
March 31, 2022	3.50
Period Ending June 30, 2022 [Member]
March 31, 2022	6.00
Period Ended September 30, 2022 [Member]
March 31, 2022	3.00
Period Ended December 31, 2022 And Thereafter [Member]
March 31, 2022	2.50