ACCRUED EXPENSE AND OTHER CURRENT LIABILITIES (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Other Liabilities Disclosure [Abstract]
Accrued compensation and benefit-related expense	$ 1,438	$ 1,151
Accrued interest	813	485
Other accrued expense	1,175	721
Other payables	2,917	3,048
Operating lease liability - current	249	382
Other current liabilities	947	873
Total	$ 7,539	$ 6,660