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Consolidated Statement Of 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]        
Dividends declared per share $ 0.00 $ 0.00 $ 0.04 $ 0.04