Consolidated Balance Sheets (Parenthetical) (USD $)	Jun. 30, 2013	Dec. 31, 2012
Series A Preferred Stock, shares issued	1	1
Series A Preferred Stock, shares outstanding	1	1
Class A Common Stock [Member]
Common Stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common Stock, shares authorized	350,000,000	350,000,000
Common Stock, shares issued	41,536,474	41,220,689
Common Stock, shares outstanding	41,477,074	41,161,289
Treasury stock, shares	59,400	59,400
Class B Common Stock [Member]
Common Stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common Stock, shares authorized	150,000,000	150,000,000
Common Stock, shares issued	25,984,625	25,984,625
Common Stock, shares outstanding	25,984,625	25,984,625