Condensed Consolidated Balance Sheets (Parenthetical) (Unaudited) - $ / shares |
Sep. 30, 2018 |
Dec. 31, 2017 |
---|---|---|
Statement of Financial Position [Abstract] | ||
Common Stock, par value (in dollars per share) | $ 0.01 | $ 0.01 |
Common Stock, shares authorized (in shares) | 500,787,260 | 500,787,260 |
Common Stock, shares issued (in shares) | 157,352,109 | 157,189,447 |
Common Stock, shares outstanding (in shares) | 157,352,109 | 157,189,447 |