NOTES PAYABLE - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019
Notes Payable [Abstract]
Interest expense	$ 607	$ 1,596	$ 4,344	$ 6,054
Interest payable, current	300		300		$ 400
Amortization of deferred financing costs	100	100	243	267
Interest Rate Swaps
Derivative [Line Items]
Unrealized gain (loss) on derivatives	$ 19	$ 200	$ 2,100	$ 1,900