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Note 16 - Shareholders' Equity (Details Textual) - $ / shares
shares in Millions
Sep. 30, 2022
Dec. 31, 2021
Feb. 26, 2021
Stock Authorized (in shares) 560.0    
Common Stock, Shares Authorized (in shares) 500.0    
Common Stock, Par or Stated Value Per Share (in dollars per share) $ 0.01 $ 0.01  
Preferred Stock, Shares Authorized (in shares) 60.0    
Preferred Stock, No Par Value (in dollars per share) $ 0 $ 0  
Common Stock, Shares, Outstanding, Ending Balance (in shares) 79.1 78.7  
Treasury Stock, Shares, Total (in shares) 0.9 0.8  
Series B Preferred Stock [Member]      
Preferred Stock, No Par Value (in dollars per share)     $ 0
Preferred Stock, Shares Outstanding, Ending Balance (in shares) 1.0 1.0  
Preferred Stock, Shares Issued (in shares) 1.0 1.0  
Series C Preferred Stock [Member]      
Preferred Stock, Shares Outstanding, Ending Balance (in shares) 1.1 1.0  
Preferred Stock, Shares Issued (in shares) 1.1 1.0