LOANS AND ALLOWANCE FOR CREDIT LOSSES - Summary of Impaired Loans, Excluding Purchased Impaired (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2021
Impaired loans
Loans with allowance allocation	$ 0		$ 0		$ 7,102
Loans without allowance allocation	3,232		3,232		7,417
Carrying balance	3,232		3,232		14,519
Contractual balance	4,201		4,201		16,963
Specifically allocated allowance	0		0		$ 566
Average carrying balance of individually assessed loans	3,200	$ 31,500	12,200	$ 34,100
Interest income on individually assessed loans	$ 0	$ 0	$ 0	$ 0