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Note 3 - Investments in Debt Securities - Amortized Cost to Fair Value of Debt Securities (Details) - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Debt Securities, Held-to-Maturity, Amortized Cost, after Allowance for Credit Loss	$ 3,227	$ 3,135
Unrealized losses	(1)
Unrealized gains		4
Debt Securities, Held-to-Maturity, Fair Value	$ 3,226	$ 3,139

X

- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 320
-SubTopic 10
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X

- Definition

Amount of accumulated unrecognized gain on investment in debt security measured at amortized cost (held-to-maturity).

+ References

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X

- Definition

Amount of accumulated unrealized loss on investment in debt security measured at amortized cost (held-to-maturity).

+ References

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X

- Definition

Fair value of investment in debt security measured at amortized cost (held-to-maturity).

+ References

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