Consolidated Balance Sheets (Parenthetical) (USD $) In Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Account receivable, allowance	$ 89	$ 0
Receivable from related party	$ 2,247	$ 123
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized	500	500
Preferred stock, shares issued	0	0
Common stock
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, authorized shares	200,000	200,000
Common stock, outstanding shares	111,516	98,379
Class A common stock
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, authorized shares	30,000	30,000
Common stock, outstanding shares	0	0