STOCKHOLDERS’ EQUITY (Tables)

6 Months Ended

Jun. 30, 2023

Equity [Abstract]

Schedule of Stock-Based Compensation Included in Operating Expenses

All stock-based compensation is included in operating expenses as follows:

	Three Months Ended June 30,				Six Months Ended June 30,
	2023		2022		2023		2022
Compensation cost recognized:
Selling, general & administrative	$	229	$	282	$	824	$	709
Research & development	94		164		181		329
	$	323	$	446	$	1,005	$	1,038

Schedule of Stock Option Activity

Stock option activity under the 2015 Plan during the period indicated below is as follows:

	Number of Shares Subject to Issuance	Weighted- average Exercise Price		Weighted- average Remaining Contractual Term	Aggregate Intrinsic Value
Outstanding at December 31, 2022	1,120,244	$	3.68	3.50 years	$	84
Granted	502,507	3.02		–	–
Forfeited, cancelled, or expired	(420,707)	4.06		–	–
Outstanding at June 30, 2023	1,202,044	$	2.52	3.49 years	$	214
Exercisable at June 30, 2023	475,681	$	3.90	2.22 years	$	214

Schedule of Restricted Stock Unit (RSU) Activity

Restricted stock unit activity during the period indicate below is as follows:

	Number of Shares	Weighted Average Grant Date Fair Value
Outstanding at December 31, 2022	214,892	$	8.43
Granted	160,640	2.48
Forfeited or surrendered	(15,120)	10.46
Vested and settled in shares	(230,430)	4.30
Outstanding at June 30, 2023	129,982	$	8.16

Schedule of Performance Stock Unit (PSU) Activity

	Number of Shares	Weighted Average Grant Date Fair Value
Outstanding at December 31, 2022	177,688	$	7.91
Forfeited	(88,844)	7.91
Vested and settled in shares	(88,844)	7.91
Outstanding at June 30, 2023	—	$	7.91