Condensed Consolidated Balance Sheets (Parenthetical) - $ / shares	Mar. 31, 2017	Dec. 31, 2016
Common stock, shares outstanding	119,492,089
Preferred stock, par value (usd per share)	$ 0.00001	$ 0.00001
Preferred stock, shares authorized	50,000,000	50,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Treasury stock, shares held	2,853,433	2,853,433
Class A Common Stock
Common stock, par value (usd per share)	$ 0.00001	$ 0.00001
Common stock, shares authorized	400,000,000	400,000,000
Common stock, shares issued	54,955,018	33,340,291
Common stock, shares outstanding	52,101,585	30,486,858
Class B Common Stock
Common stock, par value (usd per share)	$ 0.00001	$ 0.00001
Common stock, shares authorized	200,000,000	200,000,000
Common stock, shares issued	67,390,504	88,942,052
Common stock, shares outstanding	67,390,504	88,942,052