OPERATING LEASES - Lease, Cost (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2019 USD ($)
OPERATING LEASES
Operating lease costs	$ 1,219
Cash paid for amounts included in the measurement of lease liabilities	$ 1,329
Weighted average remaining lease term (in years)	10 years 6 months 3 days
Weighted average discount rate	12.70%