COMMITMENTS AND CONTINGENCIES (Lease Cost) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Finance lease cost:
Amortization of right-of-use assets	$ 5
Interest on lease obligation	1
Total finance lease cost	6
Total operating lease cost	200
Short-term lease cost	252
Total lease cost	458
Cash paid for amounts included in the measurement of lease obligation:
Operating cash flows from operating leases	200
Financing cash flows from finance leases	$ 5
Weighted average remaining lease term for operating leases	5 years 3 months 18 days
Weighted average remaining lease term for finance leases	3 years 4 months 24 days
Weighted average discount rate for operating leases	3.70%
Weighted average discount rate for finance leases	4.00%
Boniface Engineering, Ltd. [Member]
Finance lease cost:
Total lease cost	$ 62	$ 57
Jige International S.A. [Member]
Finance lease cost:
Total lease cost	$ 43	$ 37