Summary of Significant Accounting Policies (Tables)

3 Months Ended

Mar. 31, 2018

Accounting Policies [Abstract]

Potentially Dilutive Shares Excluded From Calculation of Diluted Net Income (Loss) Per Share

The following potentially dilutive shares were excluded from the calculation of diluted net income (loss) per share because their effect would have been anti-dilutive for the periods presented:

	Three Months Ended March 31,
	2018		2017
Stock options		1,528,907		1,160,015
Restricted stock units		64,192		-