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Capital Commitments And Contingencies (Details) - USD ($) $ in Thousands | Mar. 31, 2021 | Mar. 31, 2020
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Commitments and Contingencies Disclosure [Abstract] |  |
Acquisition of property, plant and equipment | $ 50 |

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- References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Amount after depreciation of long-lived, physical assets used to produce goods and services and not intended for resale, classified as other. + References No definition available. + Details
Name: | us-gaap_PropertyPlantAndEquipmentOtherNet
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant