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Related Parties - Summary of Equity in PasajeBus Spa by Exercising its Right (Details) - PasajeBus SpA [Member] - USD ($)
$ in Thousands
12 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Disclosure Of Transactions Between Related Parties [Line Items]    
Ancillary revenue $ 81 $ 110
Balance Outstanding    
Trade receivables $ 22 $ 32