Consolidated Balance Sheets (Parenthetical) (USD $)	Jun. 30, 2011	Dec. 31, 2010
Stockholders' equity (deficit):
Preferred stock, par value	$ 0.01	$ 0.01
Preferred stock, shares authorized	1,000,000	1,000,000
Preferred stock, shares issued	0	0
Common Class A
Stockholders' equity (deficit):
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	500,000,000	500,000,000
Common stock, shares issued	79,377,725	73,300,000
Common stock, shares outstanding	79,377,725	73,300,000
Common Class B
Stockholders' equity (deficit):
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	250,000,000	250,000,000
Common stock, shares issued	60,116,713	60,116,713
Common stock, shares outstanding	60,116,713	60,116,713