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Debt (Narrative) (Details) |  | 1 Months Ended | 3 Months Ended | 9 Months Ended |  |
--- | --- | --- | --- | --- | --- | ---
Sep. 12, 2023 $ / shares | Sep. 30, 2023 USD ($) D $ / shares | Sep. 30, 2024 USD ($) | Sep. 30, 2023 USD ($) $ / shares | Sep. 30, 2024 USD ($) | Sep. 30, 2023 USD ($) $ / shares | Jan. 31, 2024 USD ($) | Dec. 31, 2023 USD ($)
Debt |  |  |  |  |  |  |  |
Payments for repurchase of common stock |  |  |  |  | $ 43,456,000 | $ 58,144,000 |  |
Proceeds from Lines of Credit |  |  |  |  | 13,565,000 |  |  |
Unamortized debt issuance costs |  |  | $ 12,520,000 |  | 12,520,000 |  |  | $ 13,775,000
Amortization of discounts, premium, and debt issuance costs |  |  |  |  | 5,308,000 | 8,486,000 |  |
Interest Rate Swap [Member] |  |  |  |  |  |  |  |
Debt |  |  |  |  |  |  |  |
Gains (losses) from changes in fair values of interest rate swaps |  |  | (7,400,000) | $ 4,900,000 | (1,600,000) | $ 2,700,000 |  |
2029 Convertible Notes |  |  |  |  |  |  |  |
Debt |  |  |  |  |  |  |  |
Debt interest rate |  | 2.00% |  | 2.00% |  | 2.00% |  |
Principal amount |  | $ 345,000,000.0 |  | $ 345,000,000.0 |  | $ 345,000,000.0 |  |
Repayment of debt |  | 200,000,000.0 |  |  |  |  |  |
Payments for repurchase of common stock |  | 50,000,000.0 |  |  |  |  |  |
Debt issuance costs |  | $ 10,800,000 |  | 10,800,000 |  | 10,800,000 |  |
Debt conversion ratio |  | 15.8821 |  |  |  |  |  |
Debt principle amount converted into common stock |  | $ 1,000 |  | $ 1,000 |  | $ 1,000 |  |
Debt conversion price per share | $ / shares | $ 62.96 | $ 62.96 |  | $ 62.96 |  | $ 62.96 |  |
Convertible debt, percentage of premium over the last reported sale price | 35.00% |  |  |  |  |  |  |
Convertible debt threshold percentage |  | 130.00% |  |  |  |  |  |
Convertible debt, threshold trading days | D |  | 20 |  |  |  |  |  |
Convertible debt, threshold consecutive trading days | D |  | 30 |  |  |  |  |  |
Threshold business days after consecutive trading period | D |  | 5 |  |  |  |  |  |
Threshold consecutive trading period | D |  | 5 |  |  |  |  |  |
Percentage of principal amount redeemed |  | 100.00% |  |  |  |  |  |
Percentage of product sale price |  | 98.00% |  |  |  |  |  |
Debt Instrument, Fair Value Disclosure |  |  | 365,400,000 |  | 365,400,000 |  |  |
Unamortized debt issuance costs |  |  | 8,800,000 |  | 8,800,000 |  |  |
Line of Credit [Member] | Line of Credit Due November 2033 | ICBC Bank |  |  |  |  |  |  |  |
Debt |  |  |  |  |  |  |  |
Debt issuance costs |  |  | 800,000 |  | 800,000 |  |  |
Proceeds from Lines of Credit |  |  |  |  | $ 13,600,000 |  |  |
Prime rate discount percentage |  |  |  |  | 0.20% |  |  |
Maximum borrowing capacity |  |  |  |  |  |  | $ 40,000,000.0 |
Borrowings |  |  | $ 13,600,000 |  | $ 13,600,000 |  |  |

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