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Income Taxes (Details) - USD ($) $ in Thousands | 1 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 21, 2018 | Mar. 31, 2021 | Mar. 31, 2020 | Mar. 31, 2019
Income Taxes (Details) [Line Items] |  |  |  |
Income tax, description | the Hong Kong Legislative Council passed The Inland Revenue (Amendment) (No. 7) Bill 2017 (the “Bill”) which introduces the two-tiered profits tax rates regime. The Bill was signed into law on March 28, 2018 and was gazetted on the following day. Under the two-tiered profits tax rates regime, the first HK$2 million (equivalent to $257) of profits of the qualifying group entity will be taxed at 8.25%, and profits above HK$2 million will be taxed at 16.5%. The profits of group entities not qualifying for the two-tiered profits tax rates regime will continue to be taxed at a flat rate of 16.5%. The Group has selected Kayser Limited (“Kayser”) as the qualified entity under two-tiered profit tax rates regime and the remaining Hong Kong based subsidiaries are not qualifying under the regime and continue to be taxed at 16.5%. |  |  |
Tax losses |  | $ 2,972 | $ 2,723 |
Tax losses carried forward |  | $ 242 | 99 |
Operating loss carry forward expiration date, description |  | expire during the years ending March 31, 2024 and 2026 |  |
Other tax losses |  | $ 2,631 | $ 2,382 |
Hong Kong [Member] |  |  |  |
Income Taxes (Details) [Line Items] |  |  |  |
Effective income tax rate reconciliation, at federal statutory income tax rate |  | 16.50% | 16.50% | 16.50%
China [Member] |  |  |  |
Income Taxes (Details) [Line Items] |  |  |  |
Effective income tax rate reconciliation, at federal statutory income tax rate |  | 25.00% |  |
Income tax, description |  | However, Kayser Myanmar enjoyed a tax exemption for the period through the end of December 31, 2017 and was subject to an income tax rate of 25% starting from January 1, 2018 onward. |  |

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