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Summary of Significant Accounting Policies (Details) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Mar. 31, 2021 | Mar. 31, 2020 | Mar. 31, 2019 | Mar. 31, 2018
Summary of Significant Accounting Policies (Details) [Line Items] |  |  |  |
Fixed interest rate | 8.00% |  |  |
Carrying amount |  |  |  | $ 77
Impairment of long-lived assets |  |  | $ 233 |
VAT and surcharges | 121 | 90 | 77 |
Contract liabilities | $ 72 | $ 39 |  |
Income tax, description | Recognized income tax positions are measured at the largest amount that is greater than 50% likely of being realized. |  |  |
ROU assets | $ 2,184 |  |  |
Lease liability | $ 1,275 |  |  |
Minimum [Member] | Machinery and Equipment [Member] |  |  |  |
Summary of Significant Accounting Policies (Details) [Line Items] |  |  |  |
Estimated useful lives | 5 years |  |  |
Minimum [Member] | Leasehold Improvements [Member] |  |  |  |
Summary of Significant Accounting Policies (Details) [Line Items] |  |  |  |
Estimated useful lives | 2 years |  |  |
Maximum [Member] | Machinery and Equipment [Member] |  |  |  |
Summary of Significant Accounting Policies (Details) [Line Items] |  |  |  |
Estimated useful lives | 10 years |  |  |
Maximum [Member] | Leasehold Improvements [Member] |  |  |  |
Summary of Significant Accounting Policies (Details) [Line Items] |  |  |  |
Estimated useful lives | 5 years |  |  |
Kayser Myanmar [Member] |  |  |  |
Summary of Significant Accounting Policies (Details) [Line Items] |  |  |  |
Impairment losses | $ 77 |  | $ 77 |

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