COMMITMENTS AND CONTINGENCIES (Lease Cost) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Lease Cost
Amortization of right-of-use assets	$ 21	$ 21
Interest on lease obligation	2	2
Total finance lease cost	23	23
Total operating lease cost	399	585
Short-term lease cost	558	1,231
Total lease cost	980	1,839
Cash paid for amounts included in the measurement of lease obligation:
Operating cash flows from operating leases	397	582
Financing cash flows from finance leases	21	20
Right-of-use assets obtained in exchange for new finance lease obligations	0	0
Right-of-use assets obtained in exchange for new operating lease obligations	$ 123	265
Weighted average remaining lease term for operating leases	4 years 7 months 6 days
Weighted average remaining lease term for finance leases	1 year 10 months 24 days
Weighted average discount rate for operating leases	3.20%
Weighted average discount rate for finance leases	4.00%
Boniface Engineering, Ltd.
Lease Cost
Total lease cost	$ 211	223	$ 219
Jige International S.A.
Lease Cost
Total lease cost	$ 114	$ 109	$ 116