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Summary of Significant Accounting Policies (Details Textual) - USD ($) $ in Thousands | 12 Months Ended
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Mar. 31, 2020 | Mar. 31, 2019 | Mar. 31, 2018
Significant Accounting Policies [Line Items] |  |  |
Fixed interest rate | 8.00% |  |
Carrying amount |  |  | $ 77
Impairment of long-lived assets |  | $ 233 | 113
VAT and surcharges | 90 | 77 | $ 57
Right-of-use asset | 3,710 |  |
Contract liabilities | 39 | 25 |
Lease liability | $ 1,275 |  |
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 |  |
Kayser Myanmar [Member] |  |  |
Significant Accounting Policies [Line Items] |  |  |
Carrying amount |  |  |
Impairment losses | $ 77 | $ 77 |
Leasehold Improvements [Member] | Maximum [Member] |  |  |
Significant Accounting Policies [Line Items] |  |  |
Estimated useful lives | 5 years |  |
Leasehold Improvements [Member] | Minimum [Member] |  |  |
Significant Accounting Policies [Line Items] |  |  |
Estimated useful lives | 2 years |  |
Machinery and Equipment [Member] | Maximum [Member] |  |  |
Significant Accounting Policies [Line Items] |  |  |
Estimated useful lives | 10 years |  |
Machinery and Equipment [Member] | Minimum [Member] |  |  |
Significant Accounting Policies [Line Items] |  |  |
Estimated useful lives | 5 years |  |

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