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Shareholders' Equity (Narrative) (Details) - USD ($) shares in Thousands, $ in Thousands | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2023 | Mar. 31, 2023 | Jun. 30, 2022 | Mar. 31, 2022 | Jun. 30, 2023 | May 25, 2023
Equity, Class of Treasury Stock [Line Items] |  |  |  |  |  |
Stock repurchase program, additional authorized amount |  |  |  |  |  | $ 100,000
Common stock surrendered as payment | $ 88,319 | $ 198,819 | $ 267,198 | $ 345,921 |  |
Value of common shares remaining to be repurchased | $ 294,694 |  |  |  | $ 294,694 |
Repurchases in Accordance with Stock Award Agreements [Member] |  |  |  |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |  |  |  |
Acquisition of treasury stock (shares), total |  |  |  |  | 40 |
Common stock surrendered as payment |  |  |  |  | $ 67,474 |

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