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Note 15 - Subsequent Events (Details Textual) - USD ($)
$ in Thousands, shares in Millions
1 Months Ended 3 Months Ended
Nov. 02, 2022
Sep. 30, 2022
Jun. 30, 2022
Mar. 31, 2022
Jun. 30, 2021
Mar. 31, 2021
Treasury Stock, Value, Acquired, Cost Method   $ 27,521 $ 28,565 $ 14,800 $ 249 $ 8,118
Subsequent Event [Member]            
Treasury Stock, Shares, Acquired (in shares) 0.4          
Treasury Stock, Value, Acquired, Cost Method $ 13,800