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Long Term Debt (Narrative) (Details)
$ / shares in Units, shares in Millions
 12 Months Ended
Feb. 07, 2024
USD ($)
Jun. 06, 2022
USD ($)
$ / shares
shares
Jan. 29, 2019
USD ($)
$ / shares
Dec. 31, 2023
USD ($)
Dec. 31, 2022
USD ($)
Dec. 31, 2021
USD ($)
Jul. 16, 2021
USD ($)
Debt Instrument [Line Items]              
Repayments of Senior Debt       $ 20,000,000 $ 92,981,000 $ 66,654,000  
Loss on early extinguishment of debt       0 3,426,000 899,000  
Payments to redeem convertible notes       0 275,000,000 0  
Loss on convertible notes conversion premium       0 103,125,000 0  
Amortization of debt discount       0 0 10,217,000  
Fair Value of Convertible Notes Hedges and Warrants Net   $ 22,200,000          
Loss on convertible notes hedge transactions settlement       0 5,460,000 0  
Net Proceeds From the Settlement of Convertible Note Hedge Transactions and Warrants   16,700,000          
Payments for Convertible Notes Hedges   187,600,000          
Purchases of Convertible Notes Hedges, Net of Tax   142,100,000          
Proceeds from issuance of warrants   72,000,000   0 72,000,000 0  
Other Expense              
Debt Instrument [Line Items]              
Write off of Deferred Debt Issuance Cost and Third Party Fees           1,100,000  
Loss on convertible notes hedge transactions settlement         5,500,000    
Revolving Line of Credit              
Debt Instrument [Line Items]              
Long-term debt outstanding       2,000,000 70,000,000    
Line of credit facility, available borrowing capacity       581,400,000      
Revolving Line of Credit | Amended and Restated Senior Credit Agreement              
Debt Instrument [Line Items]              
Line of Credit Facility, Maximum Borrowing Capacity             $ 585,000,000
Letters of Credit              
Debt Instrument [Line Items]              
Letters of credit outstanding       1,600,000      
Convertible Notes Payable | 2.625 Percent Convertible Notes Due 2024              
Debt Instrument [Line Items]              
Debt Instrument, Face Amount   70,000,000 $ 345,000,000        
Loss on early extinguishment of debt         2,900,000    
Effective Interest Rate (percent)     6.14%        
Interest Expense, Debt       1,800,000 4,800,000 9,100,000  
Debt Instrument, Fair Value Disclosure       86,100,000      
Debt Instrument, Interest Rate, Stated Percentage     2.625%        
Debt Instrument, Convertible, Conversion Ratio     11.2608        
Debt Instrument, Convertible, Conversion Price | $ / shares     $ 88.80        
Payments to redeem convertible notes   $ 275,000,000          
Debt Conversion, Converted Instrument, Shares Issued | shares   0.9          
Loss on convertible notes conversion premium         103,100,000    
Convertible Debt       70,000,000 69,568,000    
Debt Instrument, Convertible, Gross Amount of Equity Component     $ 51,600,000        
Debt Instrument, Convertible, Carrying Amount of Equity Component     $ 39,100,000        
Amortization of debt discount           $ 10,200,000  
Convertible Notes Payable | 2.625 Percent Convertible Notes Due 2024 | Warrant              
Debt Instrument [Line Items]              
Option Indexed to Issuer's Equity, Strike Price | $ / shares     $ 114.92        
Convertible Notes Payable | 2.250 Percent Convertible Notes Due 2027              
Debt Instrument [Line Items]              
Debt Instrument, Face Amount   $ 800,000,000          
Interest Expense, Debt       18,000,000 10,300,000    
Debt Instrument, Fair Value Disclosure       802,400,000      
Debt Instrument, Interest Rate, Stated Percentage   2.25%          
Debt Instrument, Convertible, Conversion Ratio   6.8810          
Debt Instrument, Convertible, Conversion Price | $ / shares   $ 145.33          
Convertible Debt       $ 785,419,000 781,166,000    
Convertible Notes Payable | 2.250 Percent Convertible Notes Due 2027 | Warrant              
Debt Instrument [Line Items]              
Option Indexed to Issuer's Equity, Strike Price | $ / shares   $ 251.53          
Long-term Debt | Amended and Restated Senior Credit Agreement              
Debt Instrument [Line Items]              
Effective Interest Rate (percent)       6.614%      
Term SOFR Interest Rate Spread Adjustment       0.114%      
Adjusted Term SOFR Interest Rate       5.489%      
Long-term Debt | Amended and Restated Senior Credit Agreement | Fed Funds Effective Rate Overnight Index Swap Rate              
Debt Instrument [Line Items]              
Basis spread on variable rate (percent)       0.50%      
Long-term Debt | Amended and Restated Senior Credit Agreement | Adjusted Term SOFR Interest Rate              
Debt Instrument [Line Items]              
Basis spread on variable rate (percent)       1.125%      
Long-term Debt | Amended and Restated Senior Credit Agreement | Adjusted Term SOFR              
Debt Instrument [Line Items]              
Basis spread on variable rate (percent)       1.00%      
Term Loan Facility              
Debt Instrument [Line Items]              
Long-term Debt, Gross       $ 114,600,000      
Long-term debt outstanding       $ 114,064,000 133,858,000    
Term Loan Facility | Amended and Restated Senior Credit Agreement              
Debt Instrument [Line Items]              
Debt Instrument, Face Amount             $ 233,500,000
Repayments of Senior Debt         90,000,000    
Loss on early extinguishment of debt         $ 500,000    
Call Option | Convertible Notes Payable | 2.625 Percent Convertible Notes Due 2024              
Debt Instrument [Line Items]              
Hedge and warrant transactions, net cash paid     $ 21,000,000        
Call Option | Convertible Notes Payable | 2.250 Percent Convertible Notes Due 2027              
Debt Instrument [Line Items]              
Hedge and Warrant Transactions, Net Cash Paid   $ 115,600,000          
Subsequent Event | Convertible Notes Payable | 2.625 Percent Convertible Notes Due 2024              
Debt Instrument [Line Items]              
Payments to redeem convertible notes $ 70,000,000