DEBT SECURITIES - Narrative (Details)	12 Months Ended
	Dec. 31, 2025 USD ($)	Dec. 31, 2024 USD ($)	Dec. 31, 2022 USD ($) fund
Debt Securities, Available-for-sale [Line Items]
Net amortization of premiums and discounts	$ 0	$ 100,000
Number of bank technology funds | fund			2
Contribution to committed investments	2,200,000	500,000
Proceeds from partnership investments	100,000	300,000
Proceeds from partnership fund, return of capital	200,000	0
Debt securities pledged as collateral	$ 29,800,000	$ 34,900,000
Shareholder equity held by one issuer (as a percent)	10.00%	10.00%
Proceeds from sale of debt securities	$ 0	$ 0
AFS, accrued interest receivable	44,000
HTM, accrued interest receivable	400,000	300,000
Held-to-maturity debt securities, allowance for credit losses	74,000	71,000
Bank Technology Fund
Debt Securities, Available-for-sale [Line Items]
Contractual obligation	3,000,000.0		$ 6,000,000.0
Balance with SBIC included in other assets	4,500,000	2,500,000
Committed investments to be made in the future	7,400,000
Sale Leaseback Fund
Debt Securities, Available-for-sale [Line Items]
Contractual obligation	3,000,000.0
Small Business Investment Company ("SBIC")
Debt Securities, Available-for-sale [Line Items]
Contractual obligation	500,000
Contribution to committed investments	0	200,000
Balance with SBIC included in other assets	$ 2,400,000	$ 2,400,000