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

9 Months Ended

Sep. 30, 2022

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, 2021	947,347
Additional shares reserved	600,000
RSUs granted	(184,313)
PSUs granted	(166,421)
Options granted	(278,903)
Stock awards canceled / forfeited / expired	123,151
Options canceled / forfeited / expired	18,033
Balance, September 30, 2022	1,058,894

	Options Outstanding
	Number of Stock Options Outstanding	Weighted- Average Exercise Price		Weighted Average Remaining Term  (in Years)
Balance, December 31, 2021	287,175	$	25.89	4.92
Options granted	278,903	$	40.87
Options exercised	(27,023)	$	23.09
Options canceled / forfeited / expired	(18,033)	$	39.94
Balance, September 30, 2022	521,022	$	33.57	6.76

	Stock Awards Outstanding
	Number of Awards Outstanding	Weighted Average Grant Date Fair Value per Share
Balance, December 31, 2021	1,032,904	$	35.00
RSUs granted	184,313	$	46.62
PSUs granted	166,421	$	45.98
Awards released	(307,485)	$	28.39
Stock awards canceled / forfeited / expired	(118,710)	$	41.22
Balance, September 30, 2022	957,443	$	40.12

Schedule of Stock-based Compensation Expense

Stock-based compensation expense by department recognized during the three and nine months ended September 30, 2022 and 2021 was as follows (in thousands):

	Three Months Ended September 30,				Nine Months Ended September 30,
	2022		2021		2022		2021
Cost of revenue	$	471	$	330	$	1,430	$	908
Sales and marketing	1,641		711		3,855		1,954
Research and development	466		1,020		2,513		1,628
General and administrative	1,667		1,681		5,223		4,017
Total stock-based compensation expense	$	4,245	$	3,742	$	13,021	$	8,507