RIGHT OF USE ASSET AND LEASE LIABILITY - Supplemental Balance Sheet (Details) $ in Thousands	Dec. 31, 2019 USD ($)
RIGHT OF USE ASSET AND LEASE LIABILITY
Right-of-use assets, net	$ 4,644
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List]	Right-of-use assets, net
Lease liabilities	$ 4,727
Operating Lease, Liability, Statement of Financial Position [Extensible List]	Operating Lease, Liability, Noncurrent
Weighted-average remaining lease term	10 years 2 months 12 days
Weighted-average discount rate	3.09%