SECURITIES SOLD UNDER AGREEMENTS TO REPURCHASE - Summary of Securities Sold Under Repurchase Agreements (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Assets Sold under Agreements to Repurchase [Line Items]
Securities sold under agreements to repurchase	$ 5,845	$ 11,641
Weighted Average
Assets Sold under Agreements to Repurchase [Line Items]
Securities sold under agreements to repurchase	$ 6,700	$ 12,115	$ 14,043
Average interest rate during the year	0.30%	0.68%	0.61%
Weighted average interest rate at year-end	0.32%	0.35%	0.81%
Maximum
Assets Sold under Agreements to Repurchase [Line Items]
Securities sold under agreements to repurchase	$ 9,320	$ 15,998	$ 23,626