FAIR VALUE MEASUREMENTS - Unobservable Inputs Non-recurring (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
Mar. 31, 2026	Dec. 31, 2025
FAIR VALUE MEASUREMENTS
Fair value asset level 1 to level 2	$ 0	$ 0
Fair value asset level 2 to level 1	0	0
Fair value liabilities level 1 to level 2	0	0
Fair value liabilities level 2 to level 1	0	0
Non-recurring \| Level 3
FAIR VALUE MEASUREMENTS
Individually evaluated loans, fair value	16,028	5,091
Capitalized servicing rights, fair value	7,299	6,832
Total	23,327	11,923
Non-recurring \| Level 3 \| Commercial Real Estate Owner Occupied
FAIR VALUE MEASUREMENTS
Individually evaluated loans, fair value	365	378
Non-recurring \| Level 3 \| Commercial Real Estate Non-Owner Occupied
FAIR VALUE MEASUREMENTS
Individually evaluated loans, fair value	13,419	1,985
Non-recurring \| Level 3 \| Commercial and Industrial
FAIR VALUE MEASUREMENTS
Individually evaluated loans, fair value	2,078	2,410
Non-recurring \| Level 3 \| Residential Real Estate
FAIR VALUE MEASUREMENTS
Individually evaluated loans, fair value	$ 166	$ 318
Non-recurring \| Level 3 \| Impaired loans \| Residential Real Estate
FAIR VALUE MEASUREMENTS
Loss severity	20.00%	20.00%
Appraised value	$ 240	$ 240
Non-recurring \| Level 3 \| Capitalized servicing rights
FAIR VALUE MEASUREMENTS
Discount rate	9.62%	9.62%
Constant prepayment rate	7.36%	8.97%
Non-recurring \| Level 3 \| Minimum \| Impaired loans \| Commercial Real Estate Owner Occupied
FAIR VALUE MEASUREMENTS
Loss severity	33.00%	33.00%
Appraised value	$ 250	$ 250
Non-recurring \| Level 3 \| Minimum \| Impaired loans \| Commercial Real Estate Non-Owner Occupied
FAIR VALUE MEASUREMENTS
Loss severity	0.00%	20.00%
Appraised value	$ 1,700	$ 1,700
Non-recurring \| Level 3 \| Minimum \| Impaired loans \| Commercial and Industrial
FAIR VALUE MEASUREMENTS
Loss severity	10.00%	5.00%
Appraised value	$ 212	$ 212
Non-recurring \| Level 3 \| Maximum \| Impaired loans \| Commercial Real Estate Owner Occupied
FAIR VALUE MEASUREMENTS
Loss severity	60.00%	60.00%
Appraised value	$ 975	$ 975
Non-recurring \| Level 3 \| Maximum \| Impaired loans \| Commercial Real Estate Non-Owner Occupied
FAIR VALUE MEASUREMENTS
Loss severity	40.00%	40.00%
Appraised value	$ 10,700	$ 1,775
Non-recurring \| Level 3 \| Maximum \| Impaired loans \| Commercial and Industrial
FAIR VALUE MEASUREMENTS
Loss severity	80.00%	80.00%
Appraised value	$ 1,057	$ 1,112

Amount of transfers of assets measured on a recurring basis out of Level 1 of the fair value hierarchy into Level 2.

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Amount of transfers of assets measured on a recurring basis out of Level 2 of the fair value hierarchy into Level 1.

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Represents the appraised value used as an input to measure fair value.

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Amount of transfers of liabilities measured on a recurring basis out of Level 1 of the fair value hierarchy into Level 2.

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Amount of transfers of liabilities measured on a recurring basis out of Level 2 of the fair value hierarchy into Level 1.

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Fair value portion of financing receivable individually evaluated for credit loss. Excludes financing receivable collectively evaluated for credit loss.

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Fair value portion of asset recognized for present right to economic benefit.

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Fair value of an asset representing net future revenue from contractually specified servicing fees, late charges, and other ancillary revenues, in excess of future costs related to servicing arrangements.

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Discount rate used to estimate the fair value of servicing assets and servicing liabilities.

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Percentage of contractually collectible principal associated with a financial asset expected not to be collected due to default by the borrower.

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Estimated rate of prepayments of principal on servicing assets and servicing liabilities.

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