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Subsequent Events - Additional Information (Details) - $ / shares
3 Months Ended
Apr. 10, 2019
Mar. 31, 2019
Mar. 31, 2018
Subsequent Event [Line Items]      
Cash dividend declared per common share (in dollars per share)   $ 0.16 $ 0.14
Subsequent Event [Member]      
Subsequent Event [Line Items]      
Cash dividend declared per common share (in dollars per share) $ 0.16