Note 3 - Investments in Securities - Schedule of Available-for-Sale Securities (Details) - USD ($) $ in Thousands	Jun. 30, 2025	Dec. 31, 2024
Amortized Cost, Available-for-sale	$ 20,069	$ 6,616
Gross Unrealized Gains, Available-for-sale	49	0
Gross Unrealized Losses, Available-for-sale	(80)	(52)
Allowance for Credit Losses, Available-for-sale	0	0
Investments in available-for-sale securities, at fair value	20,038	6,564
Collateralized Mortgage-Backed Securities [Member]
Amortized Cost, Available-for-sale	6,548	4,164
Gross Unrealized Gains, Available-for-sale	39	0
Gross Unrealized Losses, Available-for-sale	(10)	(38)
Allowance for Credit Losses, Available-for-sale	0	0
Investments in available-for-sale securities, at fair value	6,577	4,126
Collateralized Mortgage Obligations [Member]
Amortized Cost, Available-for-sale	2,992	1,452
Gross Unrealized Gains, Available-for-sale	0	0
Gross Unrealized Losses, Available-for-sale	(25)	(14)
Allowance for Credit Losses, Available-for-sale	0	0
Investments in available-for-sale securities, at fair value	2,967	1,438
Corporate Debt Securities [Member]
Amortized Cost, Available-for-sale	10,529	1,000
Gross Unrealized Gains, Available-for-sale	10	0
Gross Unrealized Losses, Available-for-sale	(45)	0
Allowance for Credit Losses, Available-for-sale	0	0
Investments in available-for-sale securities, at fair value	$ 10,494	$ 1,000

Amount, before tax, of unrealized gain in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 320
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481800/320-10-50-2

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Amount, before tax, of unrealized loss in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 320
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481800/320-10-50-2

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Amount excluding accrued interest, of allowance for credit loss on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 30
-Name Accounting Standards Codification
-Section 45
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479130/326-30-45-1

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+ References

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Amount excluding accrued interest, of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 326
-SubTopic 30
-Name Accounting Standards Codification
-Section 45
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479130/326-30-45-1

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