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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 |  |  |  |  |  |

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