OPERATING LEASES - Lease, Cost (Details) $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2019 USD ($)	Jun. 30, 2019 USD ($)
OPERATING LEASES
Operating lease costs	$ 593	$ 301
Cash paid for amounts included in the measurement of lease liabilities	662	334
Right of use assets obtained in exchange for new operating lease liabilities	$ 227	$ 175
Weighted average remaining lease term (in years)	10 years 8 months 12 days	10 years 8 months 12 days
Weighted average discount rate	12.58%	12.58%