SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (VIE) (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Assets:
Accounts receivable, net	$ 874	$ 574
Total assets	20,713	19,511
Liabilities:
Accrued expenses	2,036	1,639
Total liabilities	6,551	$ 6,306
Variable Interest Entity, Primary Beneficiary [Member]
Assets:
Accounts receivable, net	538
Total assets	538
Liabilities:
Accrued expenses	27
Total liabilities	27
Noncontrolling Interest in Joint Venture	$ 27