Condensed Consolidated Balance Sheets (Unaudited) (Parenthetical) (USD $)	Sep. 30, 2014	Dec. 31, 2013
Statement of Financial Position [Abstract]
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	225,000,000	225,000,000
Common stock, shares issued	87,227,703	87,081,862
Common stock, shares outstanding	86,004,857	85,859,016
Treasury stock, at cost	1,222,846	1,222,846