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LOANS RECEIVABLE AND ALLOWANCE FOR CREDIT LOSSES - Major Categories of Loans (Details) - USD ($) $ in Thousands	Sep. 30, 2025	Dec. 31, 2024	Dec. 31, 2023
Loans and Allowance for Credit Losses - Loans
Loans, net of deferred fees and costs	$ 215,320	$ 205,219
Less: Allowance for credit losses	(2,568)	(2,839)	$ (2,157)
Loans, net	$ 212,752	$ 202,380
Loans, Percentage	100.00%	100.00%
Loans Secured by Real Estate
Loans and Allowance for Credit Losses - Loans
Loans, net of deferred fees and costs	$ 160,091	$ 161,938
Loans Secured by Real Estate | Construction and land
Loans and Allowance for Credit Losses - Loans
Loans, net of deferred fees and costs	4,480	8,882
Less: Allowance for credit losses	$ (23)	$ (40)	(31)
Loans, Percentage	2.00%	4.00%
Loans Secured by Real Estate | Farmland
Loans and Allowance for Credit Losses - Loans
Loans, net of deferred fees and costs	$ 308	$ 315
Less: Allowance for credit losses	(11)	(16)	(18)
Loans Secured by Real Estate | Single-family residential
Loans and Allowance for Credit Losses - Loans
Loans, net of deferred fees and costs	103,440	98,993
Less: Allowance for credit losses	$ (1,408)	$ (1,529)	(1,290)
Loans, Percentage	48.00%	49.00%
Loans Secured by Real Estate | Multi-family
Loans and Allowance for Credit Losses - Loans
Loans, net of deferred fees and costs	$ 4,909	$ 5,022
Less: Allowance for credit losses	$ (61)	$ (224)	(96)
Loans, Percentage	2.00%	2.00%
Loans Secured by Real Estate | Commercial
Loans and Allowance for Credit Losses - Loans
Loans, net of deferred fees and costs	$ 46,954	$ 48,726
Less: Allowance for credit losses	$ (327)	$ (507)	(190)
Loans, Percentage	22.00%	24.00%
Commercial and Industrial
Loans and Allowance for Credit Losses - Loans
Loans, net of deferred fees and costs	$ 31,141	$ 22,396
Commercial and Industrial | Commercial and industrial
Loans and Allowance for Credit Losses - Loans
Loans, net of deferred fees and costs	25,679	16,705
Less: Allowance for credit losses	$ (470)	$ (272)	(304)
Loans, Percentage	12.00%	8.00%
Commercial and Industrial | SBA guaranty
Loans and Allowance for Credit Losses - Loans
Loans, net of deferred fees and costs	$ 5,462	$ 5,691
Less: Allowance for credit losses	$ (30)	$ (38)	(21)
Loans, Percentage	3.00%	3.00%
Consumer Loans
Loans and Allowance for Credit Losses - Loans
Loans, net of deferred fees and costs	$ 24,088	$ 20,885
Consumer Loans | Consumer credit cards
Loans and Allowance for Credit Losses - Loans
Loans, net of deferred fees and costs	31
Consumer Loans | Consumer
Loans and Allowance for Credit Losses - Loans
Loans, net of deferred fees and costs	$ 2,571	2,880
Less: Allowance for credit losses		$ (45)	(30)
Loans, Percentage	1.00%	1.00%
Consumer Loans | Automobile
Loans and Allowance for Credit Losses - Loans
Loans, net of deferred fees and costs	$ 21,486	$ 18,005
Less: Allowance for credit losses	$ (202)	$ (168)	$ (177)
Loans, Percentage	10.00%	9.00%

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+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 310
-SubTopic 20
-Name Accounting Standards Codification
-Section 40
-Paragraph 7
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481628/310-20-40-7

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 310
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-Name Accounting Standards Codification
-Section 45
-Paragraph 2
-Publisher FASB
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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 326
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-Name Accounting Standards Codification
-Section 45
-Paragraph 1
-Publisher FASB
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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 326
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-Section 45
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-Publisher FASB
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+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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-SubTopic 20
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-Section 45
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-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479344/326-20-45-1

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-Publisher FASB
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