INCOME TAXES - Narrative (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Investments, Owned, Federal Income Tax Note [Line Items]
Limitation for tax deduction of operating losses (as a percent of current year taxable income)			80.00%
Federal statutory income tax rate (as a percent)	20.60%	(1.10%)	9.10%	(2.30%)
Income tax expense (benefit)	$ 451,000	$ 510,000	$ 1,777,000	$ 1,573,000
Domestic Tax Authority
Investments, Owned, Federal Income Tax Note [Line Items]
Income tax expense (benefit)	$ 0	$ 0	$ 0	$ 0