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Shareholders' Equity (Details) - USD ($) | 3 Months Ended |
--- | --- | ---
Mar. 31, 2021 | Mar. 31, 2020 | Nov. 13, 2014
Equity, Class of Treasury Stock [Line Items] |  |  |
Cash dividends declared per share (in dollars per share) | $ 0.20 | $ 0.20 |
Repurchase of shares (in shares) | 129,000 | 1,057,115 |
Treasury Stock, Value, Acquired, Cost Method | $ 5,100,000 | $ 32,100,000 |
Remaining authorized repurchase capacity | $ 108,500,000 |  |
Share repurchase program 2014 |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |
Authorized amount to be repurchased |  |  | $ 500,000,000.0

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