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LOANS AND ALLOWANCE FOR CREDIT LOSSES - Modifications (Details)	3 Months Ended			9 Months Ended		12 Months Ended
	Sep. 30, 2025 USD ($) loan	Sep. 30, 2024 USD ($) loan	Dec. 31, 2023	Sep. 30, 2025 USD ($) loan	Sep. 30, 2024 USD ($) loan	Sep. 30, 2025 USD ($) loan	Dec. 31, 2024 USD ($)	Jun. 30, 2024 USD ($)
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of modifications to borrowers experiencing financial difficulty | loan	0	0		0	0
Nonaccrual status amount	$ 25,762,000			$ 25,762,000		$ 25,762,000	$ 23,842,000
Charge-offs	122,000	$ 1,268,000		821,000	$ 1,684,000
Loans that defaulted modified preceding the payment default when the borrower was experiencing financial difficulty at the time of modification	0	0		0	0
Allowance for loan losses individually evaluated	51,000			51,000		51,000	122,000
Commercial
Financing Receivable, Troubled Debt Restructuring [Line Items]
Modified loans	2,789,000			2,789,000		2,789,000
Commercial | Current or Past Due Less than 30 Days
Financing Receivable, Troubled Debt Restructuring [Line Items]
Modified loans	2,789			2,789		2,789
Commercial | 90+ Days Past Due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Modified loans	0			0		0
Commercial | Commercial real estate - non-owner occupied
Financing Receivable, Troubled Debt Restructuring [Line Items]
Modified loans	2,572,000			2,572,000		2,572,000		$ 3,203,000
Nonaccrual status amount	6,845,000			6,845,000		6,845,000	7,370,000
Charge-offs	0	640,000		9,000	757,000
Allowance for loan losses individually evaluated	51,000			51,000		51,000	$ 0
Commercial | Commercial real estate - non-owner occupied | One loan
Financing Receivable, Troubled Debt Restructuring [Line Items]
Due time extension period			12 months				6 months
Nonaccrual status amount	$ 1,781,000			$ 1,781,000		$ 1,781,000
Number of borrower | loan	1			1		1
Charge-offs							$ 640,000
Allowance for loan losses individually evaluated	$ 0			$ 0		$ 0	0
Commercial | Commercial real estate - non-owner occupied | Current or Past Due Less than 30 Days
Financing Receivable, Troubled Debt Restructuring [Line Items]
Modified loans	2,572			2,572		2,572		1,846,000
Commercial | Commercial real estate - non-owner occupied | 90+ Days Past Due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Modified loans	0			0		0		$ 1,357,000
Amortized of cost over 90 days modified at June 30, 2024	1,093,000			1,093,000		1,093,000
Principal payments received from modified loans						264,000
Commercial | Commercial real estate - owner occupied
Financing Receivable, Troubled Debt Restructuring [Line Items]
Modified loans	217,000			217,000		217,000
Nonaccrual status amount	4,791,000			4,791,000		4,791,000	1,725,000
Charge-offs	0	$ 0		0	$ 0
Allowance for loan losses individually evaluated	0			0		0	$ 122,000
Commercial | Commercial real estate - owner occupied | Current or Past Due Less than 30 Days
Financing Receivable, Troubled Debt Restructuring [Line Items]
Modified loans	217			217		217
Commercial | Commercial real estate - owner occupied | 90+ Days Past Due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Modified loans	$ 0			$ 0		$ 0

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