Note 6 - Fair Value Measurements - Schedule of Fair Value by Balance Sheet Grouping (Details) - USD ($)	Jun. 30, 2026	Dec. 31, 2025
Servicing Asset at Fair Value, Amount	$ 1,840,000	$ 1,748,000
Reported Value Measurement [Member] \| Fair Value, Inputs, Level 1 [Member]
Cash and cash equivalents	113,435,000	145,554,000
Reported Value Measurement [Member] \| Fair Value, Inputs, Level 2 [Member]
Certificates of deposit	10,863,000	10,180,000
Interest receivable	8,057,000	7,348,000
Interest payable	580,000	724,000
Reported Value Measurement [Member] \| Fair Value, Inputs, Level 3 [Member]
Stock in Federal Home Loan Bank and other equity securities	10,871	10,871
Net loans	1,092,098,000	1,050,473,000
Servicing Asset at Fair Value, Amount	1,101,000	1,159,000
Time deposits	137,200,000	141,661,000
Estimate of Fair Value Measurement [Member] \| Fair Value, Inputs, Level 1 [Member]
Cash and cash equivalents	113,435,000	145,554,000
Estimate of Fair Value Measurement [Member] \| Fair Value, Inputs, Level 2 [Member]
Certificates of deposit	10,871,000	10,243,000
Interest receivable	8,057,000	7,348,000
Interest payable	580,000	724,000
Estimate of Fair Value Measurement [Member] \| Fair Value, Inputs, Level 3 [Member]
Stock in Federal Home Loan Bank and other equity securities	10,871	10,871
Net loans	1,027,489,000	990,239,000
Servicing Asset at Fair Value, Amount	1,840,000	1,748,000
Time deposits	$ 137,130,000	$ 141,713,000

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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.

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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.

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Fair value portion of investments in Federal Home Loan Bank (FHLBank) stock and other equity securities.

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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 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.

+ References

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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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- Definition

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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