Stock-Based Awards (Tables)

6 Months Ended

Jun. 30, 2022

Share-Based Payment Arrangement [Abstract]

Summary of Stock Options Activity

The following table summarizes stock option activity for the six months ended June 30, 2022 (in thousands):

	Number of Underlying Shares
Outstanding at December 31, 2021		2,288
Granted		—
Exercised		(228	)
Forfeited or expired		(13	)
Outstanding at June 30, 2022		2,047
Vested and exercisable at June 30, 2022		1,630

Summary of Restricted Stock Units

The following table summarizes activity for RSUs, PSUs, and MSUs, for the six months ended June 30, 2022 (in thousands):

	Number of Underlying Shares
	RSUs			MSUs		PSUs
Outstanding at December 31, 2021		1,165			84		268
Granted		652			57		75
Vested		(273	)		—		(268	)
Forfeited		(46	)		—		—
Outstanding at June 30, 2022		1,498			141		75

Summary of Stock-Based Compensation Expense

The following table presents stock-based compensation expense included in our condensed consolidated statements of operations for the periods presented (in thousands):

	Three Months Ended June 30,				Six Months Ended June 30,
	2022		2021		2022		2021
Cost of revenue	$	299	$	471	$	898	$	760
Research and development expense		4,336		4,568		9,111		7,678
Sales and marketing expense		2,642		2,320		5,394		4,122
General and administrative expense		3,582		3,223		6,770		5,471
Total stock-based compensation expense	$	10,859	$	10,582	$	22,173	$	18,031