SHAREHOLDERS' EQUITY (Tables)

12 Months Ended

Dec. 31, 2022

Summary of information about stock options under the Plan

				Weighted
		Weighted		Average
		Average		Remaining
	Number of	Exercise		Contractual	Intrinsic
	Shares	Price		Life (Years)	Value
	(in thousands, except per share and year data)
Balance at December 31, 2019	527	$	20.02	3.0	$	364
Granted	510		12.24	—		—
Exercised	(14)		10.20	—		10
Forfeited	(197)		21.79	—		2
Expired	(125)		11.85	—		—
Balance at December 31, 2020	701	$	15.51	4.2	$	53
Granted	95		12.21	—		—
Exercised	—		—	—		10
Forfeited	(159)		14.56	—		2
Expired	(20)		71.00	—		—
Balance at December 31, 2021	617	$	13.43	4.2	$	53
Forfeited	(159)		12.27	—		2
Expired	(10)		27.80	—		—
Balance at December 31, 2022	448	$	13.43	2.6	$	—
Exercisable at December 31, 2022	321	$	13.81	2.6	$	—

Schedule of weighted-average assumptions used for estimation of the fair value of the options granted under the Plan at the date of grant, using the Black-Scholes Option Valuation Model

	2022		2021		2020
Risk-free interest rate	-		0.519% to 0.873%		0.157% to 0.322%
Dividend yield	-		0.00%		0.00%
Volatility factor of the expected market price of common stock	-		63%		59%
Weighted-average expected life of option	-		3.5 years		3.5 years
Weighted-average grant date fair value	-	$	1.22	$	1.22

Summary of status and activity of non-vested stock options

		Weighted Average
		Grant Date
	Number of	Fair Value
	Shares	Per Share
	(in thousands, except per share amounts)
Non-vested, beginning of year	390	$	4.26
Granted	—	$	-
Cancelled/Forfeited	(99)	$	4.16
Vested	(165)	$	4.40
Non-vested, end of year	126	$	4.15

November 2019 Offering

Schedule of Black-Scholes pricing model to determine the fair value of warrants

	November 20, 2019
Risk-free interest rate		1.55	%
Dividend yield		0.00	%
Volatility factor of the expected market price of common stock		60	%
Weighted-average expected life		5 years
Weighted-average grant date fair value	$	0.52