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Note 5 - Bank Debt - Maximum Leverage Ratio (Details) - Credit Agreement [Member]
Jun. 30, 2022
Period Ending June 30, 2022 [Member]  
June 30, 2022 6.00
Period Ended September 30, 2022 [Member]  
June 30, 2022 4.50
Period Ended December 31, 2022 [Member]  
June 30, 2022 2.50
Period Ending March 31, 2023 and Thereafter [Member]  
June 30, 2022 2.25