Note 2 - Loans Receivable - Credit Quality Indicators (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended	12 Months Ended
Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024	Dec. 31, 2024
Financing receivable, originated current year	$ 2,014		$ 2,014		$ 1,178
Financing receivable, originated year two	1,256		1,256		2,003
Financing receivable, originated year three	1,960		1,960		5,413
Financing receivable, originated year four	5,321		5,321		5,193
Financing receivable, originated year five	5,074		5,074		3,771
Financing receivable, originated prior	15,342		15,342		13,108
Loans receivable, before allowance and fee	30,967		30,967		30,666
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		15
Loans receivable, before allowance and fee, write offs	(0)	$ (0)	0	$ (0)	15
Pass [Member]
Financing receivable, originated current year	2,014		2,014		1,178
Financing receivable, originated year two	1,256		1,256		2,003
Financing receivable, originated year three	1,960		1,960		5,413
Financing receivable, originated year four	5,321		5,321		5,193
Financing receivable, originated year five	5,074		5,074		3,771
Financing receivable, originated prior	15,342		15,342		13,108
Loans receivable, before allowance and fee	30,967		30,967		30,666
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
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	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	539		539		597
Loans receivable, before allowance and fee	539		539		597
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	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	539		539		597
Loans receivable, before allowance and fee	539		539		597
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	30,746		30,746		30,371
Real Estate Loan [Member] \| Residential Portfolio Segment [Member]
Financing receivable, originated current year	1,628		1,628		1,178
Financing receivable, originated year two	1,256		1,256		2,003
Financing receivable, originated year three	1,960		1,960		5,228
Financing receivable, originated year four	5,154		5,154		5,193
Financing receivable, originated year five	5,074		5,074		3,771
Financing receivable, originated prior	14,749		14,749		12,401
Loans receivable, before allowance and fee	29,821		29,821		29,774
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		15
Loans receivable, before allowance and fee, write offs	(0)	(0)	0	(0)	15
Real Estate Loan [Member] \| Residential Portfolio Segment [Member] \| Pass [Member]
Financing receivable, originated current year	1,628		1,628		1,178
Financing receivable, originated year two	1,256		1,256		2,003
Financing receivable, originated year three	1,960		1,960		5,228
Financing receivable, originated year four	5,154		5,154		5,193
Financing receivable, originated year five	5,074		5,074		3,771
Financing receivable, originated prior	14,749		14,749		12,401
Loans receivable, before allowance and fee	29,821		29,821		29,774
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	0		0		0
Loans receivable, before allowance and fee	0		0		0
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	386		386		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	386		386		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	386		386		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	386		386		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	539		539		597
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		185
Financing receivable, originated year four	167		167		0
Financing receivable, originated year five	0		0		0
Financing receivable, originated prior	54		54		110
Loans receivable, before allowance and fee	221		221		295
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		185
Financing receivable, originated year four	167		167		0
Financing receivable, originated year five	0		0		0
Financing receivable, originated prior	54		54		110
Loans receivable, before allowance and fee	221		221		295
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
-Name Accounting Standards Codification
-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, 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
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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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-Section 55
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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
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-Section 50
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-URI https://asc.fasb.org/1943274/2147479319/326-20-50-6

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
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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.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-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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