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Stockholders' Equity (Share Buyback Program) (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2023 | Jun. 30, 2023 | Mar. 31, 2023 | Sep. 30, 2022 | Jun. 30, 2022 | Mar. 31, 2022 | Sep. 30, 2023 | Sep. 30, 2022 | Aug. 28, 2023
Equity, Class of Treasury Stock [Line Items] |  |  |  |  |  |  |  |  |
Treasury Stock, Value, Acquired, Cost Method | $ 50,000 | $ 129 | $ 8,015 | $ 14,493 | $ 6,118 | $ 1,229 |  |  |
November 2014 Share Repurchase Plan |  |  |  |  |  |  |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |  |  |  |  |  |  |
Stock buyback program, authorized amount | $ 285,000 |  |  |  |  |  | $ 285,000 |  |
Increase authorized for share buyback program |  |  |  |  |  |  |  |  | $ 50,000
Treasury Stock, Shares, Acquired (in Shares) | 1,072,041 |  |  | 478,255 |  |  | 1,338,757 | 719,263 |
Treasury Stock, Value, Acquired, Cost Method | $ 50,000 |  |  | $ 14,500 |  |  | $ 58,100 | $ 21,800 |

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