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Note 1 - Description of the Business, Basis of Presentation and Summary of Significant Accounting Policies - Schedule of Prior Period Corrections - 10Q (Details) - USD ($)
$ / shares in Units, $ in Thousands
 3 Months Ended 12 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Mar. 31, 2025
Mar. 31, 2024
Net Loss (in thousands) $ (3,337) $ (2,699) $ (11,410) $ (15,426)
Loss per share - basic and diluted (in dollars per share) $ (1.07) $ (2.2) $ (6.46) $ (14.82)
Weighted average shares outstanding - basic and diluted (in shares) 3,105,156 1,225,423 1,766,425 1,040,720
Antidilutive securities (in shares) 1,986,098 279,070 1,981,098 162,767
Warrant [Member]        
Antidilutive securities (in shares) 87,531 4,334 87,531 4,334
Convertible Debt Securities [Member]        
Antidilutive securities (in shares) [1] 0 33,250 0 33,250
Convertible Notes to Warrant [Member]        
Antidilutive securities (in shares) 25,003 25,003 25,003 25,003
Share-Based Payment Arrangement, Option [Member]        
Antidilutive securities (in shares) 248,483 216,483 243,483 100,180
Previously Reported [Member]        
Net Loss (in thousands)   $ (2,699)   $ (15,426)
Loss per share - basic and diluted (in dollars per share)   $ (0.14)   $ (1.05)
Weighted average shares outstanding - basic and diluted (in shares)   18,902,248   14,626,282
Antidilutive securities (in shares)   10,839,148   8,913,169
Previously Reported [Member] | Warrant [Member]        
Antidilutive securities (in shares)   5,344,569   5,744,569
Previously Reported [Member] | Convertible Debt Securities [Member]        
Antidilutive securities (in shares)   665,000   665,000
Previously Reported [Member] | Convertible Notes to Warrant [Member]        
Antidilutive securities (in shares)   500,000   500,000
Previously Reported [Member] | Share-Based Payment Arrangement, Option [Member]        
Antidilutive securities (in shares)   4,329,579   2,003,600
Reverse Stock Split Adjustment [Member]        
Net Loss (in thousands)   $ 0   $ 0
Loss per share - basic and diluted (in dollars per share)   $ (2.85)   $ (21.09)
Weighted average shares outstanding - basic and diluted (in shares)   945,382   731,372
Antidilutive securities (in shares)   541,967   445,664
Reverse Stock Split Adjustment [Member] | Warrant [Member]        
Antidilutive securities (in shares)   267,231   287,231
Reverse Stock Split Adjustment [Member] | Convertible Debt Securities [Member]        
Antidilutive securities (in shares)   33,250   33,250
Reverse Stock Split Adjustment [Member] | Convertible Notes to Warrant [Member]        
Antidilutive securities (in shares)   25,003   25,003
Reverse Stock Split Adjustment [Member] | Share-Based Payment Arrangement, Option [Member]        
Antidilutive securities (in shares)   216,483   100,180
Revision of Prior Period, Error Correction, Adjustment [Member]        
Net Loss (in thousands)   $ 0   $ 0
Loss per share - basic and diluted (in dollars per share)   $ 0.65   $ 6.27
Weighted average shares outstanding - basic and diluted (in shares)   280,041   309,348
Antidilutive securities (in shares)   (262,897)   (282,897)
Revision of Prior Period, Error Correction, Adjustment [Member] | Warrant [Member]        
Antidilutive securities (in shares)   (262,897)   (282,897)
Revision of Prior Period, Error Correction, Adjustment [Member] | Convertible Debt Securities [Member]        
Antidilutive securities (in shares)   0   0
Revision of Prior Period, Error Correction, Adjustment [Member] | Convertible Notes to Warrant [Member]        
Antidilutive securities (in shares)   0   0
Revision of Prior Period, Error Correction, Adjustment [Member] | Share-Based Payment Arrangement, Option [Member]        
Antidilutive securities (in shares)   0   0
[1] Shares for the convertible note proceeds received