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Summary of Significant Accounting Policies (Details) - USD ($) $ in Thousands | 12 Months Ended |  |
--- | --- | --- | ---
Mar. 31, 2019 | Mar. 31, 2018 | Mar. 31, 2017
Significant Accounting Policies [Line Items] |  |  |
Net of goodwill |  | $ 77 | $ 77
Kayser Myanmar [Member] |  |  |
Significant Accounting Policies [Line Items] |  |  |
Gross as of April 1, 2017, March 31, 2018 and 2019 |  | 77 |
Accumulated impairment loss as of April 1, 2017 and March 31, 2018 | (77) |  |
Impairment losses during the year ended March 31, 2019 | (77) |  |
Net of goodwill |  | $ 77 |

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