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Consolidated Statement Of Stockholders' Equity (Unaudited) (Parenthetical) - $ / shares
Dec. 31, 2019
Sep. 30, 2019
Jun. 30, 2019
Dec. 31, 2018
Sep. 30, 2018
Jun. 30, 2018
Statement of Stockholders' Equity [Abstract]            
Common stock, par value (USD per share) $ 0.01 $ 0.01 $ 0.01 $ 0.01 $ 0.01 $ 0.01