Note 2 - Loans Receivable - Credit Quality Indicators (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended	12 Months Ended
Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025	Dec. 31, 2025
Financing receivable, originated current year	$ 1,548		$ 1,548		$ 4,814
Financing receivable, originated year two	4,651		4,651		1,226
Financing receivable, originated year three	1,186		1,186		1,911
Financing receivable, originated year four	1,574		1,574		5,198
Financing receivable, originated year five	5,067		5,067		4,688
Financing receivable, originated prior	16,043		16,043		12,887
Loans receivable, before allowance and fee	30,069		30,069		30,725
Financing receivable, originated current year, write offs			0		0
Financing receivable, originated year two, write offs			0		0
Financing receivable, originated year three, write offs			0		0
Financing receivable, originated year four, write offs			0		0
Financing receivable, originated year five, write offs			0		0
Financing receivable, originated prior, write offs			0		0
Loans receivable, before allowance and fee, write offs	(0)	$ (0)	0	$ (0)	0
Pass [Member]
Financing receivable, originated current year	1,548		1,548		4,814
Financing receivable, originated year two	4,651		4,651		1,226
Financing receivable, originated year three	1,186		1,186		1,911
Financing receivable, originated year four	1,574		1,574		5,198
Financing receivable, originated year five	5,067		5,067		4,688
Financing receivable, originated prior	15,976		15,976		12,752
Loans receivable, before allowance and fee	30,002		30,002		30,589
Special Mention [Member]
Financing receivable, originated current year	0		0		0
Financing receivable, originated year two	0		0		0
Financing receivable, originated year three	0		0		0
Financing receivable, originated year four	0		0		0
Financing receivable, originated year five	0		0		0
Financing receivable, originated prior	67		67		136
Loans receivable, before allowance and fee	67		67		136
Classified [Member]
Financing receivable, originated current year	0		0		0
Financing receivable, originated year two	0		0		0
Financing receivable, originated year three	0		0		0
Financing receivable, originated year four	0		0		0
Financing receivable, originated year five	0		0		0
Financing receivable, originated prior	0		0		0
Loans receivable, before allowance and fee	0		0		0
Commercial Real Estate Portfolio Segment [Member]
Financing receivable, originated current year	179		179		0
Financing receivable, originated year two	0		0		0
Financing receivable, originated year three	0		0		0
Financing receivable, originated year four	0		0		0
Financing receivable, originated year five	0		0		0
Financing receivable, originated prior	411		411		476
Loans receivable, before allowance and fee	590		590		476
Financing receivable, originated current year, write offs			0		0
Financing receivable, originated year two, write offs			0		0
Financing receivable, originated year three, write offs			0		0
Financing receivable, originated year four, write offs			0		0
Financing receivable, originated year five, write offs			0		0
Financing receivable, originated prior, write offs			0		0
Loans receivable, before allowance and fee, write offs	(0)	(0)	0	(0)	0
Commercial Real Estate Portfolio Segment [Member] \| Pass [Member]
Financing receivable, originated current year	179		179		0
Financing receivable, originated year two	0		0		0
Financing receivable, originated year three	0		0		0
Financing receivable, originated year four	0		0		0
Financing receivable, originated year five	0		0		0
Financing receivable, originated prior	411		411		476
Loans receivable, before allowance and fee	590		590		476
Commercial Real Estate Portfolio Segment [Member] \| Special Mention [Member]
Financing receivable, originated current year	0		0		0
Financing receivable, originated year two	0		0		0
Financing receivable, originated year three	0		0		0
Financing receivable, originated year four	0		0		0
Financing receivable, originated year five	0		0		0
Financing receivable, originated prior	0		0		0
Loans receivable, before allowance and fee	0		0		0
Commercial Real Estate Portfolio Segment [Member] \| Classified [Member]
Financing receivable, originated current year	0		0		0
Financing receivable, originated year two	0		0		0
Financing receivable, originated year three	0		0		0
Financing receivable, originated year four	0		0		0
Financing receivable, originated year five	0		0		0
Financing receivable, originated prior	0		0		0
Loans receivable, before allowance and fee	0		0		0
Real Estate Loan [Member]
Loans receivable, before allowance and fee	29,861		29,861		30,513
Real Estate Loan [Member] \| Residential Portfolio Segment [Member]
Financing receivable, originated current year	1,369		1,369		4,814
Financing receivable, originated year two	4,500		4,500		1,226
Financing receivable, originated year three	1,186		1,186		1,911
Financing receivable, originated year four	1,574		1,574		5,039
Financing receivable, originated year five	4,912		4,912		4,688
Financing receivable, originated prior	15,579		15,579		12,359
Loans receivable, before allowance and fee	29,120		29,120		30,037
Financing receivable, originated current year, write offs			0		0
Financing receivable, originated year two, write offs			0		0
Financing receivable, originated year three, write offs			0		0
Financing receivable, originated year four, write offs			0		0
Financing receivable, originated year five, write offs			0		0
Financing receivable, originated prior, write offs			0		0
Loans receivable, before allowance and fee, write offs	(0)	(0)	0	(0)	0
Real Estate Loan [Member] \| Residential Portfolio Segment [Member] \| Pass [Member]
Financing receivable, originated current year	1,369		1,369		4,814
Financing receivable, originated year two	4,500		4,500		1,226
Financing receivable, originated year three	1,186		1,186		1,911
Financing receivable, originated year four	1,574		1,574		5,039
Financing receivable, originated year five	4,912		4,912		4,688
Financing receivable, originated prior	15,512		15,512		12,223
Loans receivable, before allowance and fee	29,053		29,053		29,901
Real Estate Loan [Member] \| Residential Portfolio Segment [Member] \| Special Mention [Member]
Financing receivable, originated current year	0		0		0
Financing receivable, originated year two	0		0		0
Financing receivable, originated year three	0		0		0
Financing receivable, originated year four	0		0		0
Financing receivable, originated year five	0		0		0
Financing receivable, originated prior	67		67		136
Loans receivable, before allowance and fee	67		67		136
Real Estate Loan [Member] \| Residential Portfolio Segment [Member] \| Classified [Member]
Financing receivable, originated current year	0		0		0
Financing receivable, originated year two	0		0		0
Financing receivable, originated year three	0		0		0
Financing receivable, originated year four	0		0		0
Financing receivable, originated year five	0		0		0
Financing receivable, originated prior	0		0		0
Loans receivable, before allowance and fee	0		0		0
Real Estate Loan [Member] \| Construction Portfolio Segment [Member]
Financing receivable, originated current year	0		0		0
Financing receivable, originated year two	151		151		0
Financing receivable, originated year three	0		0		0
Financing receivable, originated year four	0		0		0
Financing receivable, originated year five	0		0		0
Financing receivable, originated prior	0		0		0
Loans receivable, before allowance and fee	151		151		0
Financing receivable, originated current year, write offs			0		0
Financing receivable, originated year two, write offs			0		0
Financing receivable, originated year three, write offs			0		0
Financing receivable, originated year four, write offs			0		0
Financing receivable, originated year five, write offs			0		0
Financing receivable, originated prior, write offs			0		0
Loans receivable, before allowance and fee, write offs	(0)	(0)	0	(0)	0
Real Estate Loan [Member] \| Construction Portfolio Segment [Member] \| Pass [Member]
Financing receivable, originated current year	0		0		0
Financing receivable, originated year two	151		151		0
Financing receivable, originated year three	0		0		0
Financing receivable, originated year four	0		0		0
Financing receivable, originated year five	0		0		0
Financing receivable, originated prior	0		0		0
Loans receivable, before allowance and fee	151		151		0
Real Estate Loan [Member] \| Construction Portfolio Segment [Member] \| Special Mention [Member]
Financing receivable, originated current year	0		0		0
Financing receivable, originated year two	0		0		0
Financing receivable, originated year three	0		0		0
Financing receivable, originated year four	0		0		0
Financing receivable, originated year five	0		0		0
Financing receivable, originated prior	0		0		0
Loans receivable, before allowance and fee	0		0		0
Real Estate Loan [Member] \| Construction Portfolio Segment [Member] \| Classified [Member]
Financing receivable, originated current year	0		0		0
Financing receivable, originated year two	0		0		0
Financing receivable, originated year three	0		0		0
Financing receivable, originated year four	0		0		0
Financing receivable, originated year five	0		0		0
Financing receivable, originated prior	0		0		0
Loans receivable, before allowance and fee	0		0		0
Real Estate Loan [Member] \| Commercial Real Estate Portfolio Segment [Member]
Loans receivable, before allowance and fee	590		590		476
Share Loans [Member]
Financing receivable, originated current year	0		0		0
Financing receivable, originated year two	0		0		0
Financing receivable, originated year three	0		0		0
Financing receivable, originated year four	0		0		159
Financing receivable, originated year five	155		155		0
Financing receivable, originated prior	53		53		53
Loans receivable, before allowance and fee	208		208		212
Financing receivable, originated current year, write offs			0		0
Financing receivable, originated year two, write offs			0		0
Financing receivable, originated year three, write offs			0		0
Financing receivable, originated year four, write offs			0		0
Financing receivable, originated year five, write offs			0		0
Financing receivable, originated prior, write offs			0		0
Loans receivable, before allowance and fee, write offs	(0)	$ (0)	0	$ (0)	0
Share Loans [Member] \| Pass [Member]
Financing receivable, originated current year	0		0		0
Financing receivable, originated year two	0		0		0
Financing receivable, originated year three	0		0		0
Financing receivable, originated year four	0		0		159
Financing receivable, originated year five	155		155		0
Financing receivable, originated prior	53		53		53
Loans receivable, before allowance and fee	208		208		212
Share Loans [Member] \| Special Mention [Member]
Financing receivable, originated current year	0		0		0
Financing receivable, originated year two	0		0		0
Financing receivable, originated year three	0		0		0
Financing receivable, originated year four	0		0		0
Financing receivable, originated year five	0		0		0
Financing receivable, originated prior	0		0		0
Loans receivable, before allowance and fee	0		0		0
Share Loans [Member] \| Classified [Member]
Financing receivable, originated current year	0		0		0
Financing receivable, originated year two	0		0		0
Financing receivable, originated year three	0		0		0
Financing receivable, originated year four	0		0		0
Financing receivable, originated year five	0		0		0
Financing receivable, originated prior	0		0		0
Loans receivable, before allowance and fee	$ 0		$ 0		$ 0

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

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 13
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-13

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
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-Paragraph 6
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-6

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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.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 942
-SubTopic 210
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-Paragraph 1
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
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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.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 326
-SubTopic 20
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-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479294/326-20-55-79

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
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Amount, excluding accrued interest, of writeoff of financing receivable originated more than five years before current fiscal year. Excludes net investment in lease.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
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-Section 50
-Paragraph 6
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-6

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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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Amount, excluding accrued interest, of writeoff of financing receivable originated four years before 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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Amount, excluding accrued interest, of writeoff of financing receivable originated three years before 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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Amount, excluding accrued interest, of writeoff of financing receivable originated two years before 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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Amount, excluding accrued interest, of writeoff of financing receivable originated in fiscal year before current fiscal year. Excludes net investment in lease.

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