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Note 7 - Shareholders' Equity (Details Textual) - USD ($)		3 Months Ended
		Mar. 31, 2025	Mar. 31, 2024	Dec. 31, 2024
Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures (in shares)		227,379	375,753
Share-based Compensation Arrangements by Share-based Payment Award, Other than Options, Grants in Period, Weighted Average Exercise Price (in dollars per share)		$ 1.67	$ 1.5
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercises in Period (in shares)	[1]	55,000
Treasury Stock, Common, Shares (in shares)		12,253,502
Treasury Stock, Value		$ 18,929,915		$ 18,929,915
Common Stock [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercises in Period (in shares)		27,483
[1] Repre sents the following options exercised: (a) 25,000 stock options with an exercise price of $0.97 per share exercised by a board member (b) 30,000 stock options with an exercise price of $1.33 per share exercised by a board member.

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Weighted average per share amount at which grantees can acquire shares of common stock by exercise of other than options.

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Number of shares issued during the period related to Restricted Stock Awards, net of any shares forfeited.

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Number of share options (or share units) exercised during the current period.

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