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LEASES - Other Information (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
LEASES    
Operating cash outflows from operating leases $ 536 $ 498
Weighted-average remaining lease term - operating leases 8 years 9 months 18 days 0 years
Weighted average discount rate - operating leases 2.80% 2.80%