Quarterly report pursuant to Section 13 or 15(d)

Note 4 - Marketable Securities (Details Textual)

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Note 4 - Marketable Securities (Details Textual) - USD ($)
Jun. 30, 2024
Dec. 31, 2023
Accrued Interest Receivable On Available For Sale Securities [Member]    
Interest Receivable $ 387,000 $ 298,000