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Stockholders' Equity (Schedule of Quarterly Dividends Declared and Paid) (Details) - USD ($) $ / shares in Units, $ in Thousands | 3 Months Ended | 12 Months Ended
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Dec. 31, 2021 | Sep. 30, 2021 | Jun. 30, 2021 | Mar. 31, 2021 | Dec. 31, 2020 | Sep. 30, 2020 | Jun. 30, 2020 | Mar. 31, 2020 | Dec. 31, 2019 | Sep. 30, 2019 | Jun. 30, 2019 | Mar. 31, 2019 | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Dividends paid per share (in usd per share) | $ 0.90 | $ 0.90 | $ 0.90 | $ 0.75 | $ 0.75 | $ 0.75 | $ 0.65 | $ 0.65 | $ 0.65 | $ 0.65 | $ 0.65 | $ 0.60 | $ 3.45 | $ 2.80 | $ 2.55
Payment of dividends |  |  |  |  |  |  |  |  |  |  |  |  | $ 87,171 | $ 70,401 | $ 63,813
Common Stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Payment of dividends | $ 22,746 | $ 22,747 | $ 22,739 | $ 18,939 | $ 18,866 | $ 18,865 | $ 16,349 | $ 16,321 | $ 16,280 | $ 16,267 | $ 16,267 | $ 14,999 | $ 87,171 | $ 70,401 | $ 63,813

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