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Long-Term Indebtedness (Narrative) (Details)
3 Months Ended
Mar. 31, 2025
USD ($)
Mar. 14, 2025
USD ($)
Dec. 07, 2021
USD ($)
May 13, 2021
USD ($)
tradingDay
Dec. 19, 2019
Dec. 14, 2018
USD ($)
Apr. 27, 2016
USD ($)
Mar. 31, 2025
USD ($)
Mar. 31, 2024
USD ($)
Dec. 31, 2024
USD ($)
Line of Credit Facility                    
Long-term indebtedness $ 934,632,000             $ 934,632,000   $ 756,830,000
Proceeds from issuance of convertible notes               448,500,000 $ 0  
Loss on extinguishment of debt               8,053,000 $ 0  
Term Loan                    
Line of Credit Facility                    
Debt, face amount     $ 370,000,000              
Term Loan | Period one                    
Line of Credit Facility                    
Debt Instrument, Periodic Payment     $ 1,000,000              
Debt Instrument, Redemption Price, Percentage of Principal Amount Redeemed     1.00%              
Debt term         2 years          
Term Loan | Period two                    
Line of Credit Facility                    
Debt Instrument, Redemption Price, Percentage of Principal Amount Redeemed     2.50%              
Term Loan | Period two                    
Line of Credit Facility                    
Debt Instrument, Prepaid, Principal               1,900,000    
2030 Convertible Notes                    
Line of Credit Facility                    
Debt, face amount   $ 460,000,000                
Proceeds from issuance of convertible notes   $ 447,000,000                
Debt, conversion ratio   0.0085745                
Redemption price, percentage       100.00%            
Amount of principal held       25.00%            
2030 Convertible Notes | Level 1                    
Line of Credit Facility                    
Convertible debt, fair value $ 450,800,000             450,800,000    
2030 Convertible Notes | Period one                    
Line of Credit Facility                    
Threshold trading days | tradingDay       20            
Threshold consecutive trading days | tradingDay       30            
Threshold percentage of stock price trigger       130.00%            
2026 Convertible Notes                    
Line of Credit Facility                    
Debt, face amount   $ 368,000,000   $ 460,000,000            
Proceeds from issuance of convertible notes   370,300,000   $ 447,800,000            
Debt, conversion ratio 0.0062277                  
Redemption price, percentage       100.00%            
Amount of principal held       25.00%            
Loss on extinguishment of debt   6,200,000                
2026 Convertible Notes | Level 1                    
Line of Credit Facility                    
Convertible debt, fair value $ 88,200,000             88,200,000    
2026 Convertible Notes | Period one                    
Line of Credit Facility                    
Threshold trading days | tradingDay       20            
Threshold consecutive trading days | tradingDay       30            
Threshold percentage of stock price trigger       130.00%            
2026 Warrants and 2026 Convertible Note Hedge Transactions                    
Line of Credit Facility                    
Proceeds from issuance of convertible notes   $ 1,400,000                
JPMorgan Chase Bank And Wells Fargo Bank | Line of Credit                    
Line of Credit Facility                    
Letter of credit $ 4,800,000             $ 4,800,000    
Commitment fee percentage               0.20%    
JPMorgan Chase Bank And Wells Fargo Bank | Line of Credit | Minimum                    
Line of Credit Facility                    
Commitment fee percentage               0.175%    
JPMorgan Chase Bank And Wells Fargo Bank | Line of Credit | Maximum                    
Line of Credit Facility                    
Commitment fee percentage               0.275%    
JPMorgan Chase Bank And Wells Fargo Bank | Letter of Credit                    
Line of Credit Facility                    
Maximum borrowings under line of credit             $ 50,000,000      
Prudential Investment Management Inc | Line of Credit                    
Line of Credit Facility                    
Long-term indebtedness           $ 400,000,000        
Prudential Investment Management Inc | Line of Credit | New Term Loan, Amendment No. 4                    
Line of Credit Facility                    
Long-term indebtedness     $ 400,000,000              
JPMorgan Chase Bank, N.A., Wells Fargo Bank, N.A., Bank of America, N.A., and 1st Source Bank | Line of Credit                    
Line of Credit Facility                    
Maximum borrowings under line of credit           $ 600,000,000        
Option One | JPMorgan Chase Bank, N.A., Wells Fargo Bank, N.A., Bank of America, N.A., and 1st Source Bank | Line of Credit                    
Line of Credit Facility                    
Debt instrument, additional margin interest rate               0.50%    
Option One | JPMorgan Chase Bank, N.A., Wells Fargo Bank, N.A., Bank of America, N.A., and 1st Source Bank | Line of Credit | Minimum                    
Line of Credit Facility                    
Debt instrument, additional margin interest rate             0.25%      
Option One | JPMorgan Chase Bank, N.A., Wells Fargo Bank, N.A., Bank of America, N.A., and 1st Source Bank | Line of Credit | Maximum                    
Line of Credit Facility                    
Debt instrument, additional margin interest rate           1.00%        
Option Two | JPMorgan Chase Bank, N.A., Wells Fargo Bank, N.A., Bank of America, N.A., and 1st Source Bank | Line of Credit                    
Line of Credit Facility                    
Basis spread on variable rate               1.50%    
Option Two | JPMorgan Chase Bank, N.A., Wells Fargo Bank, N.A., Bank of America, N.A., and 1st Source Bank | Line of Credit | Secured Debt                    
Line of Credit Facility                    
Basis spread on variable rate               1.50%    
Option Two | JPMorgan Chase Bank, N.A., Wells Fargo Bank, N.A., Bank of America, N.A., and 1st Source Bank | Line of Credit | Minimum                    
Line of Credit Facility                    
Basis spread on variable rate               1.25%    
Option Two | JPMorgan Chase Bank, N.A., Wells Fargo Bank, N.A., Bank of America, N.A., and 1st Source Bank | Line of Credit | Maximum                    
Line of Credit Facility                    
Debt instrument, additional margin interest rate           2.00%