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Summary of Significant Accounting Policies (Details) $ in Thousands | 12 Months Ended
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Mar. 31, 2026 USD ($) | Mar. 31, 2025 USD ($) | Mar. 31, 2024 USD ($)
Summary of Significant Accounting Policies [Line Items] |  |  |
Interest income on investments | $ 100 | $ 100 | $ 100
Shipping and handling costs | $ 573 | $ 554 | $ 537
Hong Kong, Dollars [Member] |  |  |
Summary of Significant Accounting Policies [Line Items] |  |  |
Exchange rate | 7.8275 | 7.7904 | 7.7904
Chinese Renminbi, Dollars [Member] |  |  |
Summary of Significant Accounting Policies [Line Items] |  |  |
Exchange rate | 6.9061 | 7.2429 | 7.1447

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