FAIR VALUE - Fair value hierarchy of financial instruments (Details) - USD ($) $ in Thousands	Sep. 30, 2025	Dec. 31, 2024
Financial instruments - Assets: Carrying Amount
Cash and cash equivalents	$ 12,227
Loans receivable, net	212,752	$ 202,380
Cash value of life insurance	8,966
Financial instruments - Liabilities: Carrying Amount
Deposits	329,069	309,189
Short-term debt		30,000
Financial instruments - Assets: Fair Value
Cash and cash equivalents	12,227
Loans receivable, net	205,573	191,685
Cash value of life insurance	8,966
Financial instruments - Liabilities: Fair Value
Deposits	286,177	260,368
Short-term debt		$ 30,053
Fair Value \| Level 1
Financial instruments - Assets: Fair Value
Cash and cash equivalents	12,227
Financial instruments - Liabilities: Fair Value
Deposits	25,536
Fair Value \| Level 2
Financial instruments - Assets: Fair Value
Cash value of life insurance	8,966
Financial instruments - Liabilities: Fair Value
Deposits	260,641
Fair Value \| Level 3
Financial instruments - Assets: Fair Value
Loans receivable, net	$ 205,573

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Amount of cash and cash equivalent. Cash includes, but is not limited to, currency on hand, demand deposit with financial institution, and account with general characteristic of demand deposit. Cash equivalent includes, but is not limited to, short-term, highly liquid investment that is both readily convertible to known amount of cash and so near maturity that it presents insignificant risk of change in value because of change in interest rate.

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Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

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Fair value portion of the amount that could be realized under a life insurance contract or contracts owned by the entity, commonly known as corporate-owned life insurance (COLI) or bank-owned life insurance (BOLI).

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Carrying amount as of the balance sheet date of amounts which could be received based on the terms of the insurance contract upon surrendering life policies owned by the entity.

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The aggregate of all deposit liabilities held by the entity, including foreign and domestic, interest and noninterest bearing; may include demand deposits, saving deposits, Negotiable Order of Withdrawal (NOW) and time deposits among others.

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Fair value portion of deposit liabilities held by the entity, including, but not limited to, foreign and domestic, interest and noninterest bearing, demand deposits, saving deposits, negotiable orders of withdrawal (NOW) and time deposits.

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Amortized cost excluding accrued interest, after allowance for credit loss, of financing receivable. Excludes net investment in lease.

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Fair value portion of loan receivable, including, but not limited to, mortgage loans held for investment, finance receivables held for investment, policy loans on insurance contracts.

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Reflects the total carrying amount as of the balance sheet date of debt having initial terms less than one year or the normal operating cycle, if longer.

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This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This item represents the amount of short-term debt existing as of the balance sheet date.

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