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Summary of Significant Accounting Policies (Details) - Schedule of gross amount of goodwill and accumulated impairment losses - Kayser Myanmar [Member] - USD ($)
$ in Thousands
 12 Months Ended
Mar. 31, 2021
Mar. 31, 2019
Summary of Significant Accounting Policies (Details) - Schedule of gross amount of goodwill and accumulated impairment losses [Line Items]    
Gross as of April 1, 2019, March 31, 2020 and 2021 $ 77  
Accumulated impairment loss as of April 1, 2019 (77)  
Accumulated impairment loss as at March 31, 2020 and 2021 (77) $ (77)
Net as of March 31, 2020 and 2021