Stockholders' Equity and Stock-based Compensation Expense (Tables)

6 Months Ended

Jun. 30, 2023

Share-Based Payment Arrangement [Abstract]

Schedule of Activity under the 2019 Plan

Activity under the Company's equity incentive plans is summarized as follows:

	Shares Available for Grant
Balance, December 31, 2022	1,070,925
Options and RSUs granted	(735,978)
Stock awards canceled / forfeited / expired	279,567
Options canceled / forfeited / expired	84,629
Balance, June 30, 2023	699,143

	Options Outstanding
	Number of Stock Options Outstanding	Weighted- Average Exercise Price		Weighted Average Remaining Term  (in Years)
Balance, December 31, 2022	513,935	$	34.41	6.63
Options granted	309,214	$	18.80
Options exercised	(9,234)	$	15.92
Options canceled / forfeited / expired	(84,629)	$	27.32
Balance, June 30, 2023	729,286	$	28.85	6.95

	Stock Awards Outstanding
	Number of Awards Outstanding	Weighted Average Grant Date Fair Value per Share
Balance, December 31, 2022	906,211	$	40.39
RSUs granted	426,764	$	20.03
Awards released	(262,629)	$	34.72
Stock awards canceled / forfeited / expired	(279,567)	$	43.08
Balance, June 30, 2023	790,779	$	30.32

Schedule of Stock-based Compensation Expense

Stock-based compensation expense by department recognized during the three and six months ended June 30, 2023 and 2022 was as follows (in thousands):

	Three Months Ended June 30,				Six Months Ended June 30,
	2023		2022		2023		2022
Cost of revenue	$	361	$	500	$	725	$	959
Sales and marketing	1,283		1,638		2,431		2,214
Research and development	415		1,067		1,108		2,047
General and administrative	(509)		1,528		672		3,556
Total stock-based compensation expense	$	1,550	$	4,733	$	4,936	$	8,776