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Note 7 - Investments (Details Textual) - USD ($)	Nov. 27, 2024	Jun. 30, 2025	Dec. 31, 2024
Long-Term Investments		$ 5,000,000	$ 5,000,000
Fiber Food Systems, Inc. [Member] | Bio-Key International [Member]
Stock Issued During Period, Shares, New Issues (in shares)	595,000
Boumarang, Inc. [Member]
Investment Owned, Balance, Shares (in shares)	5,000,000
Investment Owned, Percentage of Shares Outstanding	7.92%
Boumarang, Inc. [Member] | Maximum [Member]
Long-Term Investments	$ 5,000,000

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