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Investments and Fair Value Measurement - Additional Information (Details) - USD ($)
 3 Months Ended 9 Months Ended 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2023
Dec. 31, 2022
Mar. 31, 2023
Mar. 31, 2022
Investments [Line Items]            
Investments in debt securities $ 2,000,000   $ 2,000,000   $ 4,900,000  
Cash and cash equivalents 5,295,000 $ 20,196,000 5,295,000 $ 20,196,000 15,301,000 $ 28,675,000
Interest income on investments in debt securities     100,000   300,000  
Purchase of equity securities     (0) 1,061,000 1,061,000 0
Sale of equity securities     718,000 0 384,000 0
Fair value of investment in equity securities 0   0   700,000  
(Loss) gain on investment in equity securities 0 $ (48,000) 12,000 $ (123,000) 29,000 $ 0
Liquidation of equity securities     700,000      
Maximum [Member]            
Investments [Line Items]            
Interest income on investments in debt securities $ 100,000          
Unrealized gains on investments in debt securities         100,000  
Unrealized gain on investment in equity securities         $ 100,000  
(Loss) gain on investment in equity securities     $ 100,000