Quarterly report pursuant to Section 13 or 15(d)

CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical)

v3.8.0.1
CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - $ / shares
Sep. 30, 2017
Dec. 31, 2016
Statement of Financial Position [Abstract]    
Common stock, par value (usd per share) $ 0.01 $ 0.01
Common stock, shares authorized (shares) 450,000,000 450,000,000
Common stock, shares issued (shares) 106,219,759 106,452,330
Common stock, shares outstanding (shares) 104,109,932 103,947,887
Preferred stock, par value (usd per share) $ 0.01 $ 0.01
Preferred stock, shares authorized (shares) 50,000,000 50,000,000
Preferred stock, shares issued (shares) 0 0
Preferred stock, shares outstanding (shares) 0 0
Treasury stock (shares)   21,519