LEASE LIABILITIES - Maturity (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Operating lease obligations
2019	$ 111
2020	225
2021	230
2022	232
2023	237
Thereafter	158
Total	1,193
Finance lease obligations
2019	1,194
2020	2,317
2021	2,362
2022	2,057
2023	105
Total	8,035
Lease obligations
2019	1,305
2020	2,542
2021	2,592
2022	2,289
2023	342
Thereafter	158
Total	9,228
Less: Imputed interest	(1,220)
Total	$ 8,008	$ 6,429