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Unaudited Condensed Consolidated Statements of Operations and Other Comprehensive Loss - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Sep. 30, 2025
Sep. 30, 2024
Sep. 30, 2025
Sep. 30, 2024
Revenues        
Total Revenues $ 28 $ 30 $ 65 $ 69
Cost of revenues 0 1 0 3
Research and development expenses 923 984 1,924 2,386
Selling, general and administrative expenses 1,740 1,653 3,691 3,674
Total costs and expenses 2,663 2,638 5,615 6,063
Loss from Operations (2,635) (2,608) (5,550) (5,994)
Other Income (Expense)        
Interest income 92 59 168 103
Interest expense 0 0 (4) 0
Total Other Income 92 59 164 103
Income Tax Expense (2) 0 (2) (2)
Net Loss (2,545) (2,549) (5,388) (5,893)
Other Comprehensive loss:        
Unrealized gain on available-for-sale debt securities 0 1 0 1
Comprehensive Loss $ (2,545) $ (2,548) $ (5,388) $ (5,892)
Net loss per common share basic $ (0.98) $ (1.68) $ (2.11) $ (4.32)
Net loss per common share diluted $ (0.98) $ (1.68) $ (2.11) $ (4.32)
Weighted average shares used in computing net loss per common share basic 2,604,950 1,499,544 2,554,419 1,361,518
Weighted average shares used in computing net loss per common share diluted 2,604,950 1,499,544 2,554,419 1,361,518
Royalty Revenue [Member]        
Revenues        
Total Revenues $ 28 $ 28 $ 65 $ 53
Product Revenue [Member]        
Revenues        
Total Revenues $ 0 $ 2 $ 0 $ 16