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Consolidated Statements of Shareholders' Equity (Unaudited) (Parenthetical) - $ / shares
3 Months Ended 9 Months Ended
Sep. 30, 2019
Sep. 30, 2018
Sep. 30, 2019
Sep. 30, 2018
Statement of Stockholders' Equity [Abstract]        
Dividends (in dollars per share) $ 0.295 $ 0.210 $ 0.885 $ 0.640