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Note 2 - Investments - Schedule of Debt Securities, Held-to-Maturity Credit Quality Indicators (Details) - USD ($) $ in Thousands	Sep. 30, 2025	Dec. 31, 2024
Debt Securities, Held-to-Maturity, Amortized Cost	$ 31,606	$ 8,500
Corporate Debt Securities [Member]
Debt Securities, Held-to-Maturity, Amortized Cost	29,336	8,500
Municipal Bonds [Member]
Debt Securities, Held-to-Maturity, Amortized Cost	2,270
Standard & Poor's, BBB/BBB Minus Rating [Member] | Corporate Debt Securities [Member]
Debt Securities, Held-to-Maturity, Amortized Cost	29,336	8,500
Standard & Poor's, AA Rating [Member] | Municipal Bonds [Member]
Debt Securities, Held-to-Maturity, Amortized Cost	$ 2,270	$ 0

X

- Definition

Amount excluding accrued interest, before allowance for credit loss, of investment in debt security measured at amortized cost (held-to-maturity).

+ References

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

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 3B
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-3B

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 5
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-5

+ Details

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- Details

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