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Unaudited Condensed Consolidated Statements of Operations and Other Comprehensive Loss - USD ($)
$ in Thousands
 3 Months Ended
Jun. 30, 2023
Jun. 30, 2022
Revenues    
Total Revenues $ 75 $ 0
Revenue From Contract With Customer Product And Service [Extensible List] us-gaap:RoyaltyMember us-gaap:RoyaltyMember
Research and development expenses $ 1,666 $ 1,020
Selling, general and administrative expenses 2,604 2,219
Total costs and expenses 4,270 3,239
Loss from Operations (4,195) (3,239)
Other Income (Expense)    
Gain (loss) on investment in equity securities 12 (5)
Interest income 157 31
Total Other Income 169 26
Income Tax Expense (2) (2)
Net Loss $ (4,028) $ (3,215)
Net loss per common share basic $ (0.46) $ (0.37)
Net loss per common share diluted $ (0.46) $ (0.37)
Weighted average shares used in computing net loss per common share basic 8,717,232 8,710,968
Weighted average shares used in computing net loss per common share diluted 8,717,232 8,710,968
Comprehensive loss:    
Net loss $ (4,028) $ (3,215)
Comprehensive loss $ (4,028) $ (3,215)