Condensed Consolidated Balance Sheets (Parenthetical) (USD $)	Jun. 30, 2013	Dec. 31, 2012
Statement of Financial Position [Abstract]
Preferred stock, par value (usd per share)		$ 0.01
Preferred stock, shares authorized		1,000,000
Preferred stock, shares issued		0
Preferred stock, shares outstanding		0
Common stock, par value (usd per share)		$ 0.01
Common stock, shares authorized		300,000,000
Common stock, shares issued		217,286,868
Common stock, shares outstanding		217,286,868