LEASES - Leases Balance Sheets Location (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
LEASES
Operating lease right-of-use asset	$ 11,341	$ 10,308
Financial position	us-gaap:OtherAssets	us-gaap:OtherAssets
Operating lease liability	$ 13,970	$ 13,480
Financial position	us-gaap:OtherLiabilities	us-gaap:OtherLiabilities
Weighted-Average Remaining Lease Term - Operating leases	4 years 9 months 14 days	4 years 10 months 28 days
Weighted-Average Discount Rate - Operating leases	3.04%	3.71%