SECURITIES - Narrative (Details)	3 Months Ended
	Jun. 30, 2022 USD ($) security	Mar. 31, 2022 USD ($)	Dec. 31, 2021 USD ($) security
Debt and Equity Securities, FV-NI [Line Items]
Accrued interest receivable	$ 7,200,000		$ 6,800,000
Held to maturity, credit loss exposure	391,000
Amount of reserve recorded	0
Accrued interest receivable of held-to-maturity securities	2,000,000		0
Held-to-maturity, excluding accrued interest, nonaccrual	0
Carrying value of securities pledged to public deposits	$ 1,075,000,000.000		$ 889,500,000
Number of securities in the portfolio that were in an unrealized loss position | security	1,237		304
Provision for credit losses	$ 0	$ 0
AFS Securities
Debt and Equity Securities, FV-NI [Line Items]
Credit loss recognized	0	$ 0
Financial Asset, Not Past Due
Debt and Equity Securities, FV-NI [Line Items]
Current Loans	0		$ 0
Securities held to maturity past due 30 days	$ 0