Consolidated Balance Sheets (Parenthetical) - USD ($)	Sep. 30, 2015	Dec. 31, 2014
Accounts receivable, allowance for doubtful accounts (in dollars)	$ 0	$ 0
Common Class A
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, Authorized shares	150,000,000	150,000,000
Common stock, shares issued	59,946,141	45,962,324
Common stock, shares outstanding	59,946,141	45,962,324
Common Class B
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, Authorized shares	13,000,000	13,000,000
Common stock, shares issued	8,885	8,885
Common stock, shares outstanding	8,885	8,885