Stock-Based Awards (Tables)

3 Months Ended

Mar. 31, 2020

Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]

Summary of Stock Options Activity

The following table summarizes stock options activity for the three months ended March 31, 2020 (in thousands):

	Number of Underlying Shares
Outstanding at December 31, 2019		3,262
Granted		93
Exercised		(161	)
Forfeited or expired		(145	)
Outstanding at March 31, 2020		3,049
Vested and exercisable at March 31, 2020		1,409

Summary of Restricted Stock Units

The following table summarizes activity for restricted stock units, or RSUs, and RSUs with performance conditions, or PSUs, for the three months ended March 31, 2020 (in thousands):

	Number of Underlying Shares
	RSUs			PSUs
Outstanding at December 31, 2019		509			252
Granted		101			—
Vested		(9	)		(243	)
Forfeited		(40	)		(9	)
Outstanding at March 31, 2020		561			—

Summary of Stock-Based Compensation Expense

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

	Three Months Ended March 31,
	2020		2019
Cost of revenue	$	207	$	144
Research and development expense		2,021		1,071
Sales and marketing expense		1,368		1,290
General and administrative expense		1,625		972
Total stock-based compensation expense	$	5,221	$	3,477