COMMITMENTS AND CONTINGENCIES (Details 2) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2021	Dec. 31, 2020	Dec. 31, 2021
Operating leases
Right-of-use assets, net	$ 301	$ 343	$ 301
Right-of-use lease liabilities, current	100	93
Right-of-use lease liabilities, noncurrent	227	278
Total operating lease liabilities	327	371
Finance lease right-to-use assets, net	46	52
Current liabilities	12	12
Noncurrent liabilities	34	40
Total financing lease liabilities	$ 46	$ 52
Weighted average remaining lease term, operating lease	2 years 9 months 18 days	3 years 3 months 21 days
Weighted average remaining lease term, finance lease	3 years 3 months 21 days	3 years 9 months 25 days
Weighted average discount rate, Operating leases	11.30%	11.30%
Weighted average discount rate, Financing leases	9.00%	9.00%