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Consolidated Statements Of Stockholders' Equity (Parenthetical) - $ / shares
3 Months Ended 6 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Jun. 30, 2017
Jun. 30, 2016
Statement of Stockholders' Equity [Abstract]        
Common Stock, Dividends, Per Share, Cash Paid $ 0.35 $ 0.16 $ 0.55 $ 0.32