Net Loss per Share (Tables)

6 Months Ended

Jun. 30, 2020

Earnings Per Share [Abstract]

Potentially Dilutive Securities Excluded from Computation of Diluted Weighted-Average Shares

Potential common stock equivalents excluded from the calculation of diluted earnings per share for each of the three and six months ended June 30, 2020 and 2019, respectively, because the effect would have been anti-dilutive were as follows:

	Three and Six Months Ended June 30,
	2020		2019
Stock options		13,672,350		11,552,639
ESPP		97,415		—
Warrants		486,812		486,812
Restricted stock units		1,463,521		1,376,364
Performance stock units		—		301,666
Deferred stock units		—		417
		15,720,098		13,717,898