LEASES - Maturities of operating and finance lease (Details) $ in Thousands	Dec. 31, 2019 USD ($)
Lessee, Operating Lease, Liability, Payment, Due [Abstract]
2020	$ 886
2021	890
2022	965
2023	969
2024	1,504
Thereafter	508
Lessee, Operating Lease, Liability, Payments, Due, Total	5,722
Less interest	(814)
Total operating lease liabilities	4,908
Maturities of finance lease liabilities
2020	4,749
2021	17
2022	0
2023	0
2024	0
Thereafter	0
Total minimum future lease payments	4,766
Less interest	(133)
Total lease liability	$ 4,633