Note 2 - Marketable Securities and Investment Other Securities (Details Textual) - Steady State, LLC [Member] - USD ($)	Sep. 30, 2023	Apr. 07, 2022
Equipment Sold Value		$ 1,800,000
Investments, Total		$ 1,400,000
Equity Method Investment, Other-than-Temporary Impairment	$ 700,000

Sum of the carrying amounts as of the balance sheet date of all investments.

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Data Type:	xbrli:monetaryItemType
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