INCOME TAXES - Components of (loss) income before income tax (Details) - USD ($)	12 Months Ended
Dec. 31, 2020	Dec. 31, 2019
INCOME TAXES
United States operations	$ (6,663,000)	$ 6,715,000
International operations	(192,000)	(7,000)
(Loss) income before income taxes	$ (6,855,000)	$ 6,708,000

Amount of income (loss) from continuing operations, including income (loss) from equity method investments, before deduction of income tax expense (benefit), and income (loss) attributable to noncontrolling interest.

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+ Details