LOANS - Credit Quality Indicators (Details) $ in Thousands	9 Months Ended	12 Months Ended
Sep. 30, 2025 USD ($) loan	Dec. 31, 2024 USD ($)
Loans to customers
Total loans	$ 215,221	$ 202,695
Substandard
Current period gross write-offs
Increase due to downgrading	$ 735
Number of loans paid off \| loan	4
Financing receivable excluding accrued interest		393
Mortgage loans on real estate portfolio segment
Loans to customers
Total loans	$ 184,051	173,945
Mortgage loans on real estate portfolio segment \| One-to four-family first lien residential
Loans to customers
2025/2024	612	5,633
2024/2023	2,728	12,938
2023/2022	10,818	18,451
2022/2021	17,025	11,101
2021/2020	10,543	7,929
Prior	51,766	45,184
Total loans	93,492	101,236
Mortgage loans on real estate portfolio segment \| One-to four-family first lien residential \| Pass
Loans to customers
2025/2024	612	5,633
2024/2023	2,728	12,938
2023/2022	10,818	18,451
2022/2021	17,025	11,101
2021/2020	10,543	7,929
Prior	51,766	45,184
Total loans	93,492	101,236
Mortgage loans on real estate portfolio segment \| Residential construction
Loans to customers
2025/2024	968	1,006
2024/2023	754
2023/2022		120
2022/2021	115
2021/2020		101
Prior	148	61
Total loans	1,985	1,288
Mortgage loans on real estate portfolio segment \| Residential construction \| Pass
Loans to customers
2025/2024	968	1,006
2024/2023	754
2023/2022		120
2022/2021	115
2021/2020		101
Prior	148	61
Total loans	1,985	1,288
Mortgage loans on real estate portfolio segment \| Home equity loans and lines of credit
Loans to customers
2025/2024	222	768
2024/2023	642
Prior	59	65
Revolving Loans Amortized Cost Basis	14,071	10,895
Revolving Loans Converted to Term Loans Amortized Cost Basis	190	188
Total loans	15,184	11,916
Mortgage loans on real estate portfolio segment \| Home equity loans and lines of credit \| Pass
Loans to customers
2025/2024	222	768
2024/2023	642
Prior	59	65
Revolving Loans Amortized Cost Basis	14,071	10,895
Revolving Loans Converted to Term Loans Amortized Cost Basis	190	188
Total loans	15,184	11,916
Mortgage loans on real estate portfolio segment \| Commercial
Loans to customers
2025/2024	17,858	10,109
2024/2023	10,294	12,513
2023/2022	12,184	8,375
2022/2021	7,456	6,939
2021/2020	6,673	4,531
Prior	18,925	17,038
Total loans	73,390	59,505
Mortgage loans on real estate portfolio segment \| Commercial \| Pass
Loans to customers
2025/2024	17,858	9,609
2024/2023	9,221	12,513
2023/2022	11,449	8,375
2022/2021	7,456	6,939
2021/2020	6,673	4,434
Prior	17,297	15,124
Total loans	69,954	56,994
Mortgage loans on real estate portfolio segment \| Commercial \| Special Mention
Loans to customers
2024/2023	580
Total loans	580
Mortgage loans on real estate portfolio segment \| Commercial \| Substandard
Loans to customers
2025/2024		500
2024/2023	493
2023/2022	735
2021/2020		97
Prior	1,628	1,914
Total loans	$ 2,856	2,511
Current period gross write-offs
Number of loans downgraded \| loan	1
Commercial and industrial loans segment
Loans to customers
2025/2024	$ 10,665	6,883
2024/2023	5,062	5,802
2023/2022	4,334	5,975
2022/2021	1,879	1,656
2021/2020	2,076	1,502
Prior	2,370	1,593
Total loans	26,386	23,411
Current period gross write-offs
2024/2023		31
2023/2022	652
2022/2021	7	25
2021/2020	4
Prior	14	22
Total loans	677	78
Commercial and industrial loans segment \| Pass
Loans to customers
2025/2024	10,633	6,145
2024/2023	4,756	5,802
2023/2022	4,232	5,975
2022/2021	1,769	1,656
2021/2020	2,076	1,502
Prior	2,370	1,593
Total loans	25,836	22,673
Commercial and industrial loans segment \| Special Mention
Loans to customers
2025/2024	32
2024/2023	306
2023/2022	102
2022/2021	110
Total loans	550
Commercial and industrial loans segment \| Substandard
Loans to customers
2025/2024		738
Total loans		738
Consumer loans segment
Loans to customers
2025/2024	627	2,536
2024/2023	1,878	1,038
2023/2022	797	1,406
2022/2021	990	271
2021/2020	246	47
Prior	168	41
Revolving Loans Amortized Cost Basis	77
Revolving Loans Converted to Term Loans Amortized Cost Basis	1
Total loans	4,784	5,339
Current period gross write-offs
2025/2024		4
2024/2023	28	10
2023/2022	5	4
Prior	1
Total loans	34	18
Consumer loans segment \| Pass
Loans to customers
2025/2024	627	2,536
2024/2023	1,878	1,038
2023/2022	797	1,406
2022/2021	990	271
2021/2020	246	47
Prior	168	41
Revolving Loans Amortized Cost Basis	77
Revolving Loans Converted to Term Loans Amortized Cost Basis	1
Total loans	$ 4,784	$ 5,339

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Amount, excluding accrued interest, of writeoff of financing receivable originated more than five years before current fiscal year net of recoveries. Excludes net investment in lease.

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Amount of increase (decrease) in financing receivable excluding accrued interest due to downgrading (paid-off) during the period.

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Amount, excluding accrued interest, of decrease (increase) in allowance for credit loss on financing receivable from writeoff (recovery). Excludes net investment in lease.

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Amortized cost excluding accrued interest, before allowance for credit loss, fee, and loan in process, of financing receivable. Excludes net investment in lease.

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Amortized cost excluding accrued interest, of financing receivable originated more than five years prior to current fiscal year. Excludes net investment in lease.

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Amortized cost excluding accrued interest, of financing receivable that can be withdrawn, repaid, and redrawn.

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Amortized cost excluding accrued interest, of financing receivable originated four years prior to current fiscal year. Excludes net investment in lease.

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Amortized cost excluding accrued interest, of financing receivable originated three years prior to current fiscal year. Excludes net investment in lease.

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Amortized cost excluding accrued interest, of financing receivable originated in current fiscal year. Excludes net investment in lease.

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Amount, excluding accrued interest, of writeoff of financing receivable originated in current fiscal year. Excludes net investment in lease.

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Amortized cost excluding accrued interest, of financing receivable originated two years prior to current fiscal year. Excludes net investment in lease.

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Amortized cost excluding accrued interest of financing receivable originated in fiscal year prior to current fiscal year. Excludes net investment in lease.

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