STOCKHOLDERS' EQUITY (Tables)

12 Months Ended

Dec. 31, 2015

Equity [Abstract]

Schedule of shares reserved for future issuance

As of December 31, 2015 and 2014, the Company had, on an as-if converted basis, reserved shares of common stock for future issuance as follows:

	As of December 31,
	2015	2014
Common stock reserved for future grants under the Equity Incentive Plan	5,017,525	2,259,230
Reserved under 2014 Employee Stock Purchase Plan	1,804,669	800,000
Options and Restricted Stock Units issued and outstanding	10,589,268	9,776,124
Common stock subject to repurchase	—	27,000
Warrants to purchase common stock	73,883	107,876
Total reserved shares of common stock for future issuance	17,485,345	12,970,230