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Consolidated Statements Of Stockholders' Equity (Parenthetical) - $ / shares
3 Months Ended 9 Months Ended
Sep. 30, 2018
Sep. 30, 2017
Sep. 30, 2018
Sep. 30, 2017
Statement of Stockholders' Equity [Abstract]        
Common Stock, Dividends, Per Share, Cash Paid $ 0.40 $ 0.40 $ 1.20 $ 0.95