Stock-Based Compensation (Tables)

3 Months Ended

Mar. 31, 2024

Employee Benefit Plans and Stock-based Compensation

Summary of compensation costs related to stock-based awards

The following table summarizes compensation costs related to our stock-based awards (in thousands, except per share data):

	Three Months Ended
	March 31,
	2024		2023
Cost of revenue	$	105	$	105
Selling, general and administrative		553		632
Research and development		151		178
Net effect on net income (loss)	$	809	$	915

Summary of stock option activity

The following table summarizes the stock option transactions during the three months ended March 31, 2024 (in thousands, except per share data):

				Weighted-
				average
		Weighted-		Remaining
	Number of	average		Contractual	Aggregate
	Options	Exercise		Life	Intrinsic
Stock Options	Outstanding	Price		(in years)	Value
Balance as of January 1, 2024	1,198	$	5.10	4.09	$	14
Granted	—		—
Exercised	(9)		2.20
Canceled and expired	—		—
Balance as of March 31, 2024	1,189	$	5.12	3.88	$	684
Options vested as of March 31, 2024 and unvested options expected to vest, net of forfeitures	1,189	$	5.12	3.88	$	684
Options exercisable as of March 31, 2024	1,189	$	5.12	3.88	$	684

Summary of restricted stock awards activity

A summary of activity related to restricted stock awards for the three months ended March 31, 2024 is presented below (in thousands, except per share data):

		Weighted-Average
		Grant Date
Stock Awards	Shares	Share Value
Non-vested as of January 1, 2024	1,220	$	3.75
Granted	—	$	—
Vested	(7)	$	12.37
Forfeited	—	$	—
Non-vested as of March 31, 2024	1,213	$	3.69

Summary of unvested at-risk performance shares

A summary of the status of our unvested at-risk, performance shares as of March 31, 2024 is presented below (in thousands, except per share data):

		Weighted-Average
		Grant Date
Stock Awards	Shares	Share Value
Non-vested as of January 1, 2024	38	$	15.37
Granted (1)	151	$	2.28
Vested	—	$	—
Forfeited	—	$	—
Non-vested as of March 31, 2024	189	$	4.91