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INCOME TAXES - Narrative (Details) - USD ($)	3 Months Ended		12 Months Ended
INCOME TAXES - Narrative (Details) - USD ($)	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2019	Dec. 31, 2018
Operating loss carryforwards
Tax benefit as a result of the new legislation (estimate in 2017)	$ 1,700,000	$ 26,600,000		$ 1,700,000
Accruals for payments of interest and penalties	$ 0		$ 0	$ 0
Foreign
Operating loss carryforwards
Net operating loss carryforwards			18,700,000
Estimated benefit from valuation allowance release			$ 2,600,000