Note 3 - Loans and Allowance for Credit Losses - Major Classifications (Details) - USD ($) $ in Thousands	Dec. 31, 2025	Sep. 30, 2025	Jun. 30, 2025	Dec. 31, 2024	Sep. 30, 2024	Jun. 30, 2024
Gross loans	$ 872,392		$ 813,458
Less allowance for credit losses	(8,777)	$ (8,709)	(8,470)	$ (7,844)	$ (7,948)	$ (7,930)
Net loans	863,615		804,988
Commercial and Industrial [Member]
Gross loans	139,162		113,513
Less allowance for credit losses	(1,299)	(1,303)	(1,249)	(1,076)	(1,088)	(1,144)
Commercial Real Estate Portfolio Segment [Member]
Less allowance for credit losses	(3,650)	(3,537)	(3,446)	(3,478)	(3,678)	(3,650)
Commercial Real Estate Portfolio Segment [Member] \| Owner Occupied Loans [Member]
Gross loans	166,362		162,674
Commercial Real Estate Portfolio Segment [Member] \| Non-owner Occupied Loans [Member]
Gross loans	176,397		163,768
Farmland [Member]
Gross loans	46,315		42,050
Less allowance for credit losses	(129)	(119)	(118)	(93)	(87)	(89)
Land Development [Member]
Gross loans	16,017		17,535
Less allowance for credit losses	(242)	(263)	(266)	(178)	(183)	(174)
Residential Portfolio Segment [Member]
Gross loans	208,667		201,602
Less allowance for credit losses	(2,013)	(2,038)	(2,010)	(2,086)	(2,018)	(2,018)
Consumer Portfolio Segment [Member]
Gross loans	119,472		112,316
Less allowance for credit losses	$ (1,444)	$ (1,449)	$ (1,381)	$ (933)	$ (894)	$ (855)

Amount excluding accrued interest, of allowance for credit loss on financing receivable. Excludes net investment in lease.

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

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

+ References

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- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 942
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(7))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478546/942-210-S99-1

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