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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