EARNINGS /(LOSS) PER SHARE- Loss per share basic and diluted (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Numerator for basic and diluted (loss) income per common share:
Net income (loss)	$ 237,000	$ (21,000)	$ 574,000	$ (639,000)
Denominator:
Denominator for basic earnings (loss) per share - weighted average common shares outstanding	3,195,000	3,185,000	3,195,000	3,177,000
Denominator for diluted earnings (loss) per share - weighted average common shares outstanding	3,195,000	3,185,000	3,195,000	3,177,000