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Shareholders' Equity (Details) - USD ($)
 117 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Mar. 31, 2015
Dec. 31, 2011
Dec. 31, 2008
Class of Stock [Line Items]          
Common stock, shares authorized (shares) 195,000,000 195,000,000      
Common stock, par value (in dollars per share) $ 0.01 $ 0.01      
Common stock, shares issued (shares) 100,475,086 99,876,385      
Common stock, shares outstanding (shares) 93,288,565 92,689,864      
Preferred stock, shares authorized (shares) 5,000,000 5,000,000      
Preferred stock, par value (in dollars per share) $ 0.01 $ 0.01      
Conversion of convertible preferred stock (shares) 100        
Liquidation preference (in dollars per share) $ 0.01        
Authorized repurchase amount $ 130,000,000.0     $ 60,000,000.0  
Additional repurchase amount     $ 70,000,000.0    
Treasury stock, common (in shares) 7,186,521        
Treasury stock, value $ 86,300,000 $ 86,300,000      
Repurchase of common stock (shares) 0        
Remaining authorized repurchase amount $ 43,700,000        
Series A Convertible Preferred Stock          
Class of Stock [Line Items]          
Preferred stock, par value (in dollars per share) $ 0.01        
Preferred stock, shares issued (shares)         160,000
Shares, outstanding (in shares) 49,715 52,284