EARNINGS PER SHARE (Details) - USD ($)	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
EARNINGS PER SHARE
Net income (loss)	$ (1,820,000)	$ (333,000)
Denominator for basic earnings (loss) per share: weighted average shares	8,622	8,420
Employee stock options and awards	$ 0	$ 0
Denominator for diluted earnings (loss) per share: adjusted weighted-average shares and assumed conversions of stock options	8,622	8,420
Basic earnings (loss) per share	$ (0.21)	$ (0.04)
Diluted earnings (loss) per share	$ (0.21)	$ (0.04)