CONSOLIDATED BALANCE SHEETS (Unaudited) (Parenthetical) - USD ($)	Mar. 31, 2017	Dec. 31, 2016
Preferred stock, par value (in USD per share)	$ 0.001
Preferred stock, shares authorized	50,000,000	50,000,000
Common stock, par value (in USD per share)	$ 0.001	$ 0.001
Common stock, shares authorized	750,000,000	750,000,000
Common stock, shares issued	32,149,099	33,151,391
Common stock, shares outstanding	32,148,099	33,151,391
Common stock, shares held in escrow	0	1,108,928
Series A Preferred Stock
Preferred stock, par value (in USD per share)	$ 0.001	$ 0.001
Preferred stock, shares authorized	5,000,000	5,000,000
Preferred stock, shares issued	462,644	492,716
Preferred stock, shares outstanding	462,644	492,716
Preferred stock, liquidation preference	$ 689,340	$ 734,147
Series B Preferred Stock
Temporary equity, par value (in USD per share)	$ 0.001	$ 0.001
Temporary equity, shares authorized	10,000,000	10,000,000
Temporary equity, shares issued	3,327,028	3,229,409
Temporary equity, shares outstanding	3,327,028	3,229,409
Temporary equity, liquidation preference	$ 10,313,787	$ 10,011,168
Series B1 Preferred Stock
Temporary equity, par value (in USD per share)	$ 0.001	$ 0.001
Temporary equity, shares authorized	17,000,000	17,000,000
Temporary equity, shares issued	12,579,522	12,282,638
Temporary equity, shares outstanding	12,579,522	12,282,638
Temporary equity, liquidation preference	$ 19,624,054	$ 19,160,915
Series C Preferred Stock
Preferred stock, par value (in USD per share)	$ 0.001	$ 0.001
Preferred stock, shares authorized	44,000	44,000
Preferred stock, shares issued	31,568	31,568
Preferred stock, shares outstanding	31,568	31,568
Preferred stock, liquidation preference	$ 3,156,800	$ 3,156,800