Net Loss per Share (Tables)

3 Months Ended

Mar. 31, 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 because the effect would have been anti-dilutive were as follows:

	Three Months Ended March 31,
	2020		2019
Stock options		14,204,662		8,956,961
ESPP		39,744		—
Warrants		486,812		486,812
Restricted stock units		2,046,583		1,265,151
Performance stock units		—		321,666
Deferred stock units		—		35,418
		16,777,801		11,066,008