Equity Award Plans (Tables)

9 Months Ended

Sep. 30, 2022

Equity Award Plans [Abstract]

Summary of Stock Option Activity

A summary of stock option activity under the 2006 Plan and the 2013 Plan is as follows:

	Options Outstanding
	Number of Shares			Weighted Average Exercise Price Per Share		Weighted Average Remaining Contractual Term (in Years)		Aggregate Intrinsic Value
Balances at December 31, 2021		383		$	23.23		4.85	$	—
Options forfeited and cancelled		(46	)		49.54		—		—
Balances at September 30, 2022		337			19.67		4.70		—
Options exercisable		322			20.40		4.61		—
Options vested		322			20.40		4.61		—
Options vested and expected to vest		337			19.67		4.70		—

Summary of RSU Activity

A summary of RSU activity under the 2013 Plan is as follows:

	RSUs Outstanding
	Number of Shares			Weighted Average Grant Date Fair Value Per Unit
Granted and unvested at December 31, 2021		1,542		$	4.60
RSUs granted		1,105			1.92
RSUs vested		(557	)		3.70
RSUs cancelled and withheld to cover taxes		(241	)		6.19
Granted and unvested at September 30, 2022		1,849		$	3.06