Note 7 - Share-based Compensation (Details Textual)	3 Months Ended	6 Months Ended
Jun. 30, 2026 USD ($) $ / shares shares	Jun. 30, 2026 USD ($) $ / shares shares
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross (in shares)		250,000
Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Grants in Period, Weighted Average Exercise Price (in dollars per share) \| $ / shares		$ 4.53
Share-Based Payment Arrangement, Expense, Tax Benefit \| $		$ 0
Share-Based Payment Arrangement, Amount Capitalized \| $		0
Share-Based Payment Arrangement, Employee [Member] \| Board of Directors Chairman [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross (in shares)	125,000
Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Grants in Period, Weighted Average Exercise Price (in dollars per share) \| $ / shares	$ 3.05
Share-Based Payment Arrangement, Employee [Member] \| Employees [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross (in shares)	125,000
Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Grants in Period, Weighted Average Exercise Price (in dollars per share) \| $ / shares	$ 6
Share-Based Payment Arrangement, Option [Member]
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount \| $	$ 195,116	$ 195,116
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year)		3 years 3 months 25 days
Share-Based Payment Arrangement, Option [Member] \| Share-Based Payment Arrangement, Employee [Member] \| Employees [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year)	4 years
Restricted Stock Units (RSUs) [Member]
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount \| $	$ 108,362	$ 108,362
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year)		9 months 10 days
The 2014 Long Term Stock Incentive Plan [Member]
Common Stock, Capital Shares Reserved for Future Issuance (in shares)	195,699	195,699
The 2021 Plan [Member]
Common Stock, Capital Shares Reserved for Future Issuance (in shares)	2,590,765	2,590,765
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Available for Grant (in shares)	1,870,277	1,870,277

Aggregate number of common shares reserved for future issuance.

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