Balance Sheets (Parenthetical) - USD ($)	Dec. 31, 2015	Dec. 31, 2014
Convertible preferred stock
Preferred stock, shares authorized (in shares)	5,000,000	17,000,000
Preferred stock, shares outstanding (in shares)	0
STOCKHOLDERS' EQUITY (DEFICIT)
Common stock, par value (in dollars per share)	$ 0.00033	$ 0.00033
Common stock, shares authorized (in shares)	75,000,000	35,000,000
Common stock, shares issued (in shares)	28,810,845	1,688,475
Common stock, shares outstanding (in shares)	28,810,845	1,688,475
Convertible Preferred Stock - Series C-1 [Member]
Convertible preferred stock
Preferred stock, shares authorized (in shares)		7,000,000
Preferred stock, shares issued (in shares)	0	3,558,890
Preferred stock, shares outstanding (in shares)		3,558,890
Preferred stock, liquidation preference		$ 20,819,976
Convertible Preferred Stock - Series C [Member]
Convertible preferred stock
Preferred stock, shares authorized (in shares)	5,000,000	6,000,000
Preferred stock, shares issued (in shares)	0	4,697,314
Preferred stock, shares outstanding (in shares)		4,697,314
Preferred stock, liquidation preference		$ 25,128,853
Convertible Preferred Stock - Series B-1 [Member]
Convertible preferred stock
Preferred stock, shares authorized (in shares)		500,000
Preferred stock, shares issued (in shares)	0	359,935
Preferred stock, shares outstanding (in shares)		359,935
Preferred stock, liquidation preference		$ 629,886
Convertible Preferred Stock - Series B [Member]
Convertible preferred stock
Preferred stock, shares authorized (in shares)		2,500,000
Preferred stock, shares issued (in shares)	0	2,415,116
Preferred stock, shares outstanding (in shares)		2,415,116
Preferred stock, liquidation preference		$ 3,018,895
Convertible Preferred Stock - Series A [Member]
Convertible preferred stock
Preferred stock, shares authorized (in shares)		1,000,000
Preferred stock, shares issued (in shares)	0	864,500
Preferred stock, shares outstanding (in shares)		864,500
Preferred stock, liquidation preference		$ 864,500