OPERATING LEASES - Lease, Cost (Details) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2019 USD ($)	Sep. 30, 2019 USD ($)
OPERATING LEASES
Operating lease costs	$ 314	$ 907
Cash paid for amounts included in the measurement of lease liabilities	337	999
Right of use assets obtained in exchange for new operating lease liabilities	$ 55	$ 282
Weighted average remaining lease term (in years)	10 years 7 months 6 days	10 years 7 months 6 days
Weighted average discount rate	12.55%	12.55%