Stockholders' Equity (Tables)

6 Months Ended

Jun. 30, 2017

Equity [Abstract]

Schedule of Common Stock Reserved for Issuance

The Company has reserved shares of common stock for issuance as follows:

	June 30, 2017		December 31, 2016
Options issued and outstanding		3,332,142		2,141,868
Shares available for issuance under 2015 Stock Option and Incentive Plan		797,339		720,921
Shares available for issuance under 2015 Employee Stock Purchase Plan		479,947		202,087
Total		4,609,428		3,064,876