STOCK-BASED COMPENSATION (Tables)

12 Months Ended

Dec. 31, 2022

STOCK-BASED COMPENSATION

Summary of Stock Options Outstanding

	December 31, 2022			December 31, 2021
		Weighted			Weighted
	Number of	Average		Number of	Average
	Stock	Exercise		Stock	Exercise
	Options	Price		Options	Price
Stock options outstanding at beginning of period	277,576	$	6.18	185,054	$	7.70
Granted	78,720		1.09	94,522		3.91
Expired	—		—	(2,000)		73.54
Stock options outstanding at end of period	356,296		5.06	277,576		6.18
Stock options exercisable at end of period	277,576	$	6.18	183,054	$	7.35

Summary of Stock Options Outstanding and Exercisable by Stock Option Plan

	Outstanding Stock Options			Exercisable Stock Options
	Number of	Weighted		Number of	Weighted
	Outstanding	Average		Stock Options	Average
Stock Option Plan	Stock Options	Exercise Price		Exercisable	Exercise Price
2004 Plan	92	$	1,638.00	92	$	1,638.00
2004 Directors’ Plan	3		10,380.00	3		10,380.00
2013 Plan	356,201		4.55	277,481		5.53
	356,296	$	5.06	277,576	$	6.18

Summary of Assumptions Used to Assess the Fair Value of Stock Options Granted

	Years ended December 31,
	2022		2021
Expected volatility		105%		113%
Expected term of options (years)		6		6
Expected dividend rate		—		—
Risk-free interest rate		2.95%		0.82%
Expected forfeiture rate		—		—
Weighted-average grant-date fair value	$	0.89	$	3.28

Summary of RSU Activity

	December 31,			December 31,
	2022			2021
		Weighted-			Weighted-
		Average			Average
	Number of	Grant Date		Number of	Grant Date
	RSUs	Fair Value		RSUs	Fair Value
Unvested RSUs at beginning of period	385,004	$	3.18	236,403	$	2.10
Granted	1,229,950		1.16	227,402		3.93
Forfeited/Expired	(225,091)		2.39	—		—
Vested	(181,991)		2.31	(78,801)		2.10
Unvested RSUs at end of period	1,207,872	$	1.40	385,004	$	3.18