FEDERAL HOME LOAN BANK ADVANCES - SHORT-TERM FHLB ADVANCES (Details) - Federal Home Loan Bank overnight advances - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
FHLB advances
Average outstanding balance during the period	$ 25,000	$ 42,198	$ 32,597	$ 43,681
Average interest rate during the period (as percent)	0.16%	0.22%	0.16%	0.92%
Maximum outstanding at any month end during the period	$ 25,000	$ 165,000	$ 25,000	$ 250,000