Segment Information - Schedule of Breakdown of Sales by Destination (Details) - USD ($) $ in Thousands	12 Months Ended
Mar. 31, 2026	Mar. 31, 2025	Mar. 31, 2024
Net sales
Net sales from continuing operations	$ 61,332	$ 67,610	$ 69,368
United States of America [Member]
Net sales
Net sales from continuing operations	7,554	6,081	7,925
PRC [Member]
Net sales
Net sales from continuing operations	18,314	22,448	22,121
United Kingdom [Member]
Net sales
Net sales from continuing operations	10,453	10,917	11,985
Hong Kong [Member]
Net sales
Net sales from continuing operations	6,385	6,908	8,225
Europe [Member]
Net sales
Net sales from continuing operations	9,286	12,546	10,016
Canada [Member]
Net sales
Net sales from continuing operations	5,086	3,882	2,988
Others [Member]
Net sales
Net sales from continuing operations	$ 4,254	$ 4,828	$ 6,108

Amount, including tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value-added and excise.

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+ Details