(LOSS) INCOME PER SHARE - Loss per share basic and diluted (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Numerator for basic and diluted loss per common share
Net (loss) income	$ (2,381,000)	$ 5,688,000	$ (3,139,000)	$ 5,662,000
Denominator:
Denominator for basic income per share-weighted average common shares outstanding	3,148,000	3,163,000	3,146,000	3,271,000
Dilutive securities		67,000		66,000
Denominator for diluted earnings per share - weighted average common shares outstanding	3,148,000	3,230,000	3,146,000	3,337,000