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CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - $ / shares
shares in Thousands
Sep. 30, 2017
Feb. 28, 2017
Dec. 31, 2016
CONDENSED CONSOLIDATED BALANCE SHEETS      
Common stock, par value (in dollars per share) $ 0.01   $ 0.01
Common stock, shares authorized 200,000   200,000
Common stock, shares issued 75,619 13,500 61,942
Common stock, shares outstanding 75,142   61,465
Treasury stock, shares 477   477