OPERATIONS, SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES AND RECENTLY ADOPTED AND RECENTLY ISSUED ACCOUNTING STANDARDS - Lease maturities (Details) $ in Thousands	Dec. 31, 2019 USD ($)
OPERATIONS, SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES AND RECENTLY ADOPTED AND RECENTLY ISSUED ACCOUNTING STANDARDS
2020	$ 194
2021	804
2022	802
2023	789
2024	790
Thereafter	4,190
Total lease payments	7,569
Less imputed interest	(890)
Total	$ 6,679