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Unaudited Condensed Consolidated Statements of Operations and Other Comprehensive Loss - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2023
Dec. 31, 2022
Revenues        
Total Revenues $ 5 $ 131 $ 80 $ 208
Revenue From Contract With Customer Product And Service [Extensible List] us-gaap:RoyaltyMember us-gaap:RoyaltyMember us-gaap:RoyaltyMember us-gaap:RoyaltyMember
Research and development expenses $ 1,434 $ 1,185 $ 4,435 $ 3,436
Selling, general and administrative expenses 2,251 2,305 7,635 6,724
Total costs and expenses 3,685 3,490 12,070 10,160
Loss from Operations (3,680) (3,359) (11,990) (9,952)
Other Income (Expense)        
(Loss) gain on investment in equity securities 0 (48) 12 (123)
Interest income 76 143 354 277
Total Other Income 76 95 366 154
Income Tax Expense 0 0 (2) (2)
Net Loss (3,604) (3,264) (11,626) (9,800)
Other Comprehensive Loss:        
Unrealized gain (loss) on available-for-sale debt securities 0 3 (1) 3
Comprehensive loss $ (3,604) $ (3,261) $ (11,627) $ (9,797)
Net loss per common share basic $ (0.40) $ (0.37) $ (1.31) $ (1.13)
Net loss per common share diluted $ (0.40) $ (0.37) $ (1.31) $ (1.13)
Weighted average shares used in computing net loss per common share basic 9,115,455 8,713,617 8,850,881 8,712,294
Weighted average shares used in computing net loss per common share diluted 9,115,455 8,713,617 8,850,881 8,712,294