Common Stock (Tables)

9 Months Ended

Sep. 30, 2020

Equity [Abstract]

Schedule of Common Stock Reserved for Future Issuance

Shares of common stock reserved for future issuance, on an as-if converted basis, are as follows:

	September 30, 2020	December 31, 2019
	(in thousands)
Convertible senior notes	19,972	—
Stock options issued and outstanding	19,065	21,191
Remaining shares available for issuance under the 2019 Plan	25,165	29,048
Outstanding and unsettled restricted stock units (RSUs)	7,700	7,175
Shares available for issuance under the ESPP	5,449	5,870
Total shares of common stock reserved	77,351	63,284