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Note 10 - Stockholders' Equity (Details Textual) - USD ($)
$ / shares in Units, $ in Millions
3 Months Ended 9 Months Ended
Oct. 24, 2024
Sep. 30, 2024
Sep. 30, 2023
Sep. 30, 2024
Sep. 30, 2023
Feb. 21, 2024
Common Stock, Dividends, Per Share, Declared (in dollars per share)   $ 0.16 $ 0.14 $ 0.48 $ 0.42  
O 2024 Q4 Dividends [Member] | Subsequent Event [Member]            
Common Stock, Dividends, Per Share, Declared (in dollars per share) $ 0.16          
Dividends Payable, Date to be Paid Dec. 05, 2024          
Dividends Payable, Date of Record Nov. 21, 2024          
Stock Repurchase Program [Member] | Common Stock [Member]            
Share Repurchase Program, Authorized, Amount           $ 50