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Note 8 - Stock Options and Restricted Shares (Details Textual) - USD ($)				3 Months Ended	6 Months Ended
	May 21, 2025	Mar. 10, 2025	Feb. 28, 2024	Jun. 30, 2025	Jun. 30, 2025
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Number (in shares)				944,026	944,026
Share-Based Payment Arrangement, Nonvested Award, Option, Cost Not yet Recognized, Amount				$ 161,833	$ 161,833
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Intrinsic Value				0	0
Performance Options [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross (in shares)			200,000
Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Grants in Period, Weighted Average Exercise Price (in dollars per share)			$ 27.5
Share-Based Payment Arrangement, Expense				$ 0	$ 0
Share-Based Payment Arrangement, Nonemployee [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross (in shares)		415,000
Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Grants in Period, Weighted Average Exercise Price (in dollars per share)		$ 2.5
Share-Based Payment Arrangement, Nonemployee [Member] \| Consultant [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross (in shares)	10,000
Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Grants in Period, Weighted Average Exercise Price (in dollars per share)	$ 2.1
Share-Based Payment Arrangement, Nonemployee [Member] \| Share-Based Payment Arrangement, Option [Member] \| Consultant [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Expiration Period (Year)	10 years
Share-Based Payment Arrangement, Nonemployee [Member] \| Share-Based Payment Arrangement, Tranche One [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross (in shares)		385,000
Share-Based Payment Arrangement, Nonemployee [Member] \| Share-Based Payment Arrangement, Tranche One [Member] \| Share-Based Payment Arrangement, Option [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Expiration Period (Year)		10 years
Share-Based Payment Arrangement, Nonemployee [Member] \| Share-Based Payment Arrangement, Tranche Two [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross (in shares)		30,000
Share-Based Payment Arrangement, Nonemployee [Member] \| Share-Based Payment Arrangement, Tranche Two [Member] \| Share-Based Payment Arrangement, Option [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Expiration Period (Year)		10 years