Quarterly report pursuant to Section 13 or 15(d)

Note 4 - Marketable Securities (Details Textual)

v3.23.1
Note 4 - Marketable Securities (Details Textual) - USD ($)
Mar. 31, 2023
Dec. 31, 2022
Accrued Interest Receivable On Available For Sale Securities [Member]    
Interest Receivable $ 55,000 $ 80,000