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Digital Currencies - Schedule of holdings of digital currencies (Details) - USD ($)
$ in Thousands
Sep. 30, 2024
Mar. 31, 2024
Mar. 31, 2023
Disclosure Of Holdings Of Digital Currencies [Line Items]      
Digital currencies, fair value $ 165,177 $ 161,645  
Bitcoin [Member]      
Disclosure Of Holdings Of Digital Currencies [Line Items]      
Digital currencies, fair value 164,860 161,258 $ 65,772
Ethereum Classic [Member]      
Disclosure Of Holdings Of Digital Currencies [Line Items]      
Digital currencies, fair value 113 196 $ 117
Other coins [Member]      
Disclosure Of Holdings Of Digital Currencies [Line Items]      
Digital currencies, fair value $ 204 $ 191