v3.26.1
Note 6 - Stock-based Compensation (Details Textual) - USD ($)
$ / shares in Units, $ in Millions
1 Months Ended 6 Months Ended 12 Months Ended
Nov. 30, 2025
Dec. 31, 2025
Apr. 30, 2026
Apr. 30, 2025
Jun. 30, 2026
Nov. 28, 2025
Jul. 09, 2025
May 06, 2024
Nov. 27, 2023
Mar. 15, 2023
Common Stock, Par or Stated Value Per Share (in dollars per share)   $ 0.001 $ 0.001   $ 0.001   $ 0.001 $ 0.001    
Preferred Stock, Par or Stated Value Per Share (in dollars per share)     $ 0.001       $ 0.001      
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross (in shares)     604,000 155,000            
The 2023 Equity Incentive Plan [Member]                    
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized (in shares)           1,250,000 1,000,000   85,000 25,000
Share-based Compensation Arrangement by Share-based Payment Award, Maximum Allowable Percentage of Convertible Securities           25.00% 25.00%      
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross (in shares)     604,000 155,000            
Share-Based Payment Arrangement, Option [Member]                    
Share-based Compensation Arrangement by Share-based Payment Award, Award Contractual Term (Year)     10 years              
Share-Based Compensation Arrangement by Share-Based Payment Award, Expiration Period (Year)     10 years              
Performance-based Common Stock Option [Member]                    
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount     $ 0.8              
Service-based Common Stock Option [Member]                    
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount     0.2              
Restricted Stock Units (RSUs) [Member]                    
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount     0.5              
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Grant Date Fair Value     $ 0.5              
Executive Directors and Employees [Member] | Share-Based Payment Arrangement, Option [Member]                    
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Requisite Service Period (Year)     3 years              
Director [Member] | Share-Based Payment Arrangement, Option [Member]                    
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Requisite Service Period (Year)     12 months              
Director [Member] | Restricted Stock Units (RSUs) [Member]                    
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares)   305,000                
Chief Executive Officer [Member] | Restricted Stock Units (RSUs) [Member]                    
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares) 70,000