Stock-Based Compensation (Tables)

6 Months Ended

Jun. 30, 2024

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

Summary of Stock Option Activity

A summary of stock option activity for the six months ended June 30, 2024 is as follows:

	Number Outstanding			Weighted Average Exercise Price per Share		Weighted Average Remaining Contractual Term (Years)		Aggregate Intrinsic Value
Balance as of January 1, 2024		494,960		$	4.99		2.23	$	1,725,985
Granted		—			—
Cancelled or Expired		(9,500	)		8.66
Exercised		—			—
Balance as of June 30, 2024		485,460		$	4.92		1.77	$	—
Vested or expected to vest as of June 30, 2024		485,460		$	4.92		1.77	$	—
Exercisable as of June 30, 2024		485,460		$	4.92		1.77	$	—

Summary Information about Stock Options Outstanding

The following table summarizes information about stock options outstanding as of June 30, 2024:

	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 - $10.93		484,460		1.77	$	4.90		484,460	$	4.90
$11.00 - $16.50		1,000		0.08		11.00		1,000		11.00
$4.36 - $16.50		485,460		1.77	$	4.92		485,460	$	4.92

Summary of Stock Unit Activity

The following is a summary of RSU activity for the six months ended June 30, 2024:

	Number Outstanding			Weighted Average Fair Value
Unvested as of January 1, 2024		730,062		$	11.17
Granted		658,015			5.28
Vested		(279,908	)		9.11
Forfeited		(8,221	)		12.51
Unvested as of June 30, 2024		1,099,948		$	8.17
RSUs vested but not released		70,350		$	8.85

Stock-Based Compensation Expense Related to Stock Options and RSUs

The following table summarizes stock-based compensation expense related to stock options and RSUs included in the condensed consolidated statements of comprehensive income (loss) for the three and six months ended June 30, 2024 and 2023 (in thousands):

	Three Months Ended June 30,				Six Months Ended June 30,
	2024		2023		2024		2023
Cost of revenue	$	5	$	9	$	12	$	19
Research and development		43		23		77		37
Selling and marketing		443		119		561		241
General and administrative		494		356		854		694
Stock-based compensation expense - continuing operations		985		507		1,504		991
Stock-based compensation expense - discontinued operations		490		487		990		993
Total	$	1,475	$	994	$	2,494	$	1,984