Note 2 - Loans Receivable - Allowance for Credit Losses (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
Beginning Balance	$ 185	$ 185	$ 185	$ 185	$ 185
Charge-offs	0	0	0	0	0
Recoveries	0	0	0	0
Provision for credit losses	0	0	0	0
Ending Balances	185	185	185	185	185
Individually Evaluated for Impairment	0	0	0	0
Collectively Evaluated for Impairment	185	185	185	185
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	179	155	178	173	173
Charge-offs	0	0	0	0	0
Recoveries	0	0	0	0
Provision for credit losses	(3)	(8)	(2)	(26)
Ending Balances	176	147	176	147	178
Individually Evaluated for Impairment	0	0	0	0
Collectively Evaluated for Impairment	176	147	176	147
Construction Portfolio Segment [Member] \| Real Estate Loan [Member]
Beginning Balance	0	22	0	3	3
Charge-offs	0	0	0	0	0
Recoveries	0	0	0	0
Provision for credit losses	2	5	2	24
Ending Balances	2	27	2	27	0
Individually Evaluated for Impairment	0	0	0	0
Collectively Evaluated for Impairment	2	27	2	27
Commercial Real Estate Portfolio Segment [Member]
Beginning Balance	6	8	7	9	9
Charge-offs	0	0	0	0	0
Recoveries	0	0	0	0
Provision for credit losses	1	3	0	2
Ending Balances	7	11	7	11	$ 7
Individually Evaluated for Impairment	0	0	0	0
Collectively Evaluated for Impairment	$ 7	$ 11	$ 7	$ 11

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

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 942
-SubTopic 210
-Name Accounting Standards Codification
-Section S45
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477657/942-210-S45-1

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 942
-SubTopic 210
-Name Accounting Standards Codification
-Section S50
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478478/942-210-S50-1

Reference 3: 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)(2))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478546/942-210-S99-1

Reference 4: 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
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-Topic 310
-SubTopic 10
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-Paragraph 11B
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-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
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-Section 30
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-Publisher FASB
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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
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-Publisher FASB
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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
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-Section 50
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-Publisher FASB
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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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
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-Publisher FASB
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 220
-SubTopic 40
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-Subparagraph (a)
-Publisher FASB
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