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Earnings Per Share (Details) - $ / shares | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2019 | Sep. 30, 2019 | Jun. 30, 2019 | Mar. 31, 2019 | Dec. 31, 2018 | Sep. 30, 2018 | Jun. 30, 2018 | Mar. 31, 2018 | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Earnings Per Share [Abstract] |  |  |  |  |  |  |  |  |  |  |  |
Cash dividends declared per common share | $ 0.15 | $ 0.15 | $ 0.15 | $ 0.15 | $ 0.12 | $ 0.12 | $ 0.12 | $ 0.12 | $ 0.60 | $ 0.48 | $ 0.20 | $ 0.20
Cash dividends paid per common share |  |  |  |  |  |  |  |  | $ 0.60 | $ 0.48 |  | $ 0.20

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