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Shareholders' Equity (Narrative) (Details) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019 | Feb. 08, 2022
Equity, Class of Treasury Stock [Line Items] |  |  |  |
Stock repurchase program, authorized amount | $ 240,871 |  |  |
Common stock surrendered as payment | 554,027 | $ 102,956 | $ 198,563 |
Repurchases in Accordance with Stock Award Agreements [Member] |  |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |  |
Common stock surrendered as payment | $ 79,870 | $ 48,555 | $ 10,420 |
Subsequent Event [Member] |  |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |  |
Stock repurchase program, additional authorized amount |  |  |  | $ 200,000

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