Note 2 - Loans Receivable - Allowance for Credit Losses (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
Beginning Balance	$ 185	$ 200	$ 185	$ 200	$ 200
Charge-offs	0	0	0	0	(15)
Recoveries	0	0	0	0
Provision for credit losses	0	0	0	0
Ending Balances	185	200	185	200	185
Individually Evaluated for Impairment	0	0	0	0
Collectively Evaluated for Impairment	185	200	185	200
Share Loans [Member]
Beginning Balance	0	0	0	0	0
Charge-offs	0	0	0	0	0
Recoveries	0	0	0	0
Provision for credit losses	0	0	0	0
Ending Balances	0	0	0	0	0
Individually Evaluated for Impairment	0	0	0	0
Collectively Evaluated for Impairment	0	0	0	0
Residential Portfolio Segment [Member] \| Real Estate Loan [Member]
Beginning Balance	155	181	173	175	175
Charge-offs	0	0	0	0	(15)
Recoveries	0	0	0	0
Provision for credit losses	(8)	9	(26)	15
Ending Balances	147	190	147	190	173
Individually Evaluated for Impairment	0	0	0	0
Collectively Evaluated for Impairment	147	190	147	190
Construction Portfolio Segment [Member] \| Real Estate Loan [Member]
Beginning Balance	22	9	3	15	15
Charge-offs	0	0	0	0	0
Recoveries	0	0	0	0
Provision for credit losses	5	(9)	24	(15)
Ending Balances	27	0	27	0	3
Individually Evaluated for Impairment	0	0	0	0
Collectively Evaluated for Impairment	27	0	27	0
Commercial Real Estate Portfolio Segment [Member]
Beginning Balance	8	10	9	10	10
Charge-offs	0	0	0	0	0
Recoveries	0	0	0	0
Provision for credit losses	3	0	2	0
Ending Balances	11	10	11	10	$ 9
Individually Evaluated for Impairment	0	0	0	0
Collectively Evaluated for Impairment	$ 11	$ 10	$ 11	$ 10

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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- Definition

Amount of allowance for credit loss on financing receivable evaluated on collective basis. Excludes financing receivable evaluated on individual basis.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 310
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 4
-Subparagraph (SAB Topic 6.L.5.a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480418/310-10-S99-4

Reference 2: http://fasb.org/us-gaap/role/ref/otherTransitionRef
-Topic 310
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 11B
-Subparagraph (g)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481962/310-10-50-11B

Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 30
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479391/326-20-30-2

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- Definition

Amount of allowance for credit loss on financing receivable evaluated on individual basis. Excludes financing receivable evaluated on collective basis.

+ References

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- Definition

Amount, excluding accrued interest, of increase in allowance for credit loss on financing receivable from recovery. 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 13
-Subparagraph (e)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-13

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- Definition

Amount, excluding accrued interest, of decrease in allowance for credit loss on financing receivable from writeoff. 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 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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-Section 50
-Paragraph 6
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-6

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- Definition

Amount, excluding accrued interest, of credit loss expense (reversal of expense) on financing receivable. 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 13
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-13

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 220
-SubTopic 40
-Name Accounting Standards Codification
-Section 50
-Paragraph 22
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147476148/220-40-50-22

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