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Non-operating (expenses) / income, net
12 Months Ended
Mar. 31, 2021
Other Income and Expenses [Abstract]  
Non-operating (expenses) / income, net
  22 Non-operating income / (expenses), net

Non-operating income / (expenses), net comprises the following:

    Year Ended March 31,
    2019   2020   2021
    $ in thousands   $ in thousands   $ in thousands
Interest income     237       175       140  
Interest expense     (139 )     (181 )     (158 )
Foreign exchange (loss) / gain     (21 )     42       (31 )
                         
Non-operating income / (expenses), net     77       36       (49 )