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Note 8 - Marketable Securities - Marketable Securities (Details) - USD ($) $ in Thousands	Jun. 30, 2025	Dec. 31, 2024
Amortized Cost	$ 5,435	$ 5,254
Debt Securities, Available-for-Sale	5,642	$ 5,410
Corporate and Municipal Debt Securities [Member]
Amortized Cost	5,435
Unrealized Gain	207
Debt Securities, Available-for-Sale	$ 5,642

X

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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).

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