v3.26.1
Property, Plant and Equipment, Net (Details) - USD ($)
$ in Thousands
 12 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Mar. 31, 2024
Property, Plant and Equipment, Net [Line Items]      
Net value $ 22,326 $ 23,385  
Amortization expenses $ 55,796 55,958  
Lease terms 50 years    
Depreciation of property, plant and equipment $ 1,484 1,519 $ 1,523
Impairment on property plant and equipment
Use Rights [Member]      
Property, Plant and Equipment, Net [Line Items]      
Amortization expenses 87 87 $ 87
Cost of land use rights 28,077 28,077  
Dongguan Chang An Xiaobian [Member] | Use Rights [Member]      
Property, Plant and Equipment, Net [Line Items]      
Cost of land use rights 4,156 4,156  
Computer Equipment [Member]      
Property, Plant and Equipment, Net [Line Items]      
Net value $ 13 9  
Long Term Leased Land And Buildings [Member]      
Property, Plant and Equipment, Net [Line Items]      
Lease terms 50 years    
Leasehold land and buildings [Member]      
Property, Plant and Equipment, Net [Line Items]      
Net value $ 411 2,483  
Amortization expenses $ 321 $ 1,790