Stock-Based Compensation (Tables)

9 Months Ended

Sep. 30, 2022

Share Based Compensation Arrangement By Share Based Payment Award [Line Items]

Summary of Activity for Stock Option Plans

A summary of stock option activity for the nine months ended September 30, 2022 is as follows:

	Number Outstanding			Weighted Average Exercise Price per Share		Weighted Average Remaining Contractual Term (Years)		Aggregate Intrinsic Value
Balance as of December 31, 2021		514,693		$	5.11		4.11	$	11,850,930
Granted		—			—
Cancelled or Expired		(8,883	)		8.41
Exercised		—			—
Balance as of September 30, 2022		505,810		$	5.06		3.42	$	3,785,283
Vested or expected to vest as of September 30, 2022		505,810		$	5.06		3.42	$	3,785,283
Exercisable as of September 30, 2022		505,810		$	5.06		3.42	$	3,785,283

Summary Information about Options Outstanding

The following table summarizes information about stock options outstanding as of September 30, 2022:

	Stock Options Outstanding						Stock Options Exercisable
Range of Exercise Prices	Number Outstanding		Weighted Average Remaining Contractual Life (Years)		Weighted Average Exercise Price		Number Exercisable		Weighted Average Exercise Price
$4.36 - $7.20		445,960		3.68	$	4.37		445,960	$	4.37
$7.50 - $11.25		59,317		1.54		10.18		59,317		10.18
$11.30 - $16.95		500		1.50		11.30		500		11.30
$19.70 - $29.55		33		0.87		19.70		33		19.70
$4.36 - $29.55		505,810		3.42	$	5.06		505,810	$	5.06

Summary of Stock Unit Activity

The following is a summary of RSU activity for the nine months ended September 30, 2022:

	Number Outstanding			Weighted Average Fair Value
Unvested as of December 31, 2021		485,729		$	9.19
Granted		275,807			17.16
Vested		(212,600	)		8.75
Forfeited		(44,192	)		8.92
Unvested as of September 30, 2022		504,744		$	13.76
RSUs vested but not released		215,735		$	6.45

Stock-Based Compensation Expense Related to Stock Options, RSUs and PSUs

The following table summarizes stock-based compensation expense related to stock options, RSUs, and PSUs included in the condensed consolidated statements of comprehensive income (loss) for the three and nine months ended September 30, 2022 and 2021 (in thousands):

	Three Months Ended September 30,				Nine Months Ended September 30,
	2022		2021		2022		2021
Cost of revenue	$	39	$	49	$	138	$	130
Research and development		239		109		780		364
Selling and marketing		223		155		606		382
General and administrative		351		259		1,041		1,151
Total	$	852	$	572	$	2,565	$	2,027

Performance Stock Units

Share Based Compensation Arrangement By Share Based Payment Award [Line Items]

Summary of Stock Unit Activity

The following is a summary of PSU activity for the nine months ended September 30, 2022:

	Number Outstanding
Unvested as of December 31, 2021		175,000
Granted		—
Vested		(20,000	)
Forfeited		(80,000	)
Unvested as of September 30, 2022		75,000