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Summary of Significant Accounting Policies (Details Textual) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Mar. 31, 2019 | Mar. 31, 2018 | Mar. 31, 2017
Significant Accounting Policies [Line Items] |  |  |
Fixed interest rate | 8.00% |  |
Carrying amount |  | $ 77 | $ 77
Impairment of long-lived assets | 113 | 233 |
VAT and surcharges | 77 | 57 | $ 108
Right-of-use asset | 1,181 |  |
Contract liabilities | 17 | 25 |
Lease liability | 231 |  |
Kayser Myanmar [Member] |  |  |
Significant Accounting Policies [Line Items] |  |  |
Carrying amount |  | $ 77 |
Impairment losses | $ 77 |  |
Machinery and Equipment [Member] |  |  |
Significant Accounting Policies [Line Items] |  |  |
Estimated useful lives | 10 years |  |
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 |  |

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