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Temporary Equity, Equity and Dividends (Narrative) (Details) - USD ($)
$ / shares in Units, $ in Millions
 1 Months Ended 3 Months Ended
Feb. 01, 2023
Jan. 03, 2023
May 08, 2025
Mar. 31, 2025
Mar. 31, 2024
Dividends Payable [Line Items]          
Preferred and participating dividends       $ 8.6 $ 8.5
Dividends declared (usd per share)       $ 0.29 $ 0.27
VeriTread          
Dividends Payable [Line Items]          
Non-controlling interest, percentage   4.00%      
Securities Purchase Agreement          
Dividends Payable [Line Items]          
Initial conversion price (usd per share) $ 73.00        
Anti-dilution adjustment provisions (usd per share) $ 71.58        
Senior A Senior Preferred Shares          
Dividends Payable [Line Items]          
Preferred and participating dividends       $ 1.9 $ 1.8
Senior A Senior Preferred Shares | Securities Purchase Agreement          
Dividends Payable [Line Items]          
Initial preferred dividend, percentage 5.50%        
Participating dividends (usd per share) $ 0.27        
Senior A Senior Preferred Shares | Securities Purchase Agreement | Starboard Value LP and certain of its affiliates          
Dividends Payable [Line Items]          
Increase in preferred dividend rate in fourth anniversary, percentage 7.50%        
Spread on variable rate, percentage 6.00%        
Increase in preferred dividend rate in ninth anniversary, percentage 10.50%        
Preferred Dividends on Series A Senior Preferred Shares          
Dividends Payable [Line Items]          
Preferred and participating dividends       $ 6.7 $ 6.7
Subsequent Event          
Dividends Payable [Line Items]          
Dividends declared (usd per share)     $ 0.29    
VeriTread          
Dividends Payable [Line Items]          
Remaining units ownership interest, percentage   21.00%