v3.26.1
Significant Customer and Other Information - Concentrations of Risk (Details)
12 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Mar. 31, 2024
Customer Concentration Risk [Member] | Customer A [Member] | Sales Revenue Product Line [Member]      
Significant Customer and Other Information [Abstract]      
Concentration risk percentage 42.00% 39.00% 35.00%
Customer Concentration Risk [Member] | Customer A [Member] | Accounts Receivable [Member]      
Significant Customer and Other Information [Abstract]      
Concentration risk percentage 52.00% 41.00%  
Customer Concentration Risk [Member] | Customer B [Member] | Sales Revenue Product Line [Member]      
Significant Customer and Other Information [Abstract]      
Concentration risk percentage 22.00% 21.00% 21.00%
Customer Concentration Risk [Member] | Customer B [Member] | Accounts Receivable [Member]      
Significant Customer and Other Information [Abstract]      
Concentration risk percentage 12.00% 26.00%  
Customer Concentration Risk [Member] | Customer C [Member] | Sales Revenue Product Line [Member]      
Significant Customer and Other Information [Abstract]      
Concentration risk percentage 21.00% 26.00% 27.00%
Customer Concentration Risk [Member] | Customer C [Member] | Accounts Receivable [Member]      
Significant Customer and Other Information [Abstract]      
Concentration risk percentage 18.00% 7.00%  
Product Concentration Risk [Member] | Sales Revenue Product Line [Member]      
Significant Customer and Other Information [Abstract]      
Concentration risk percentage 100.00% 100.00% 100.00%
Rotating Electrical Products [Member] | Product Concentration Risk [Member] | Sales Revenue Product Line [Member]      
Significant Customer and Other Information [Abstract]      
Concentration risk percentage 68.00% 67.00% 66.00%
Brake Related Products [Member] | Product Concentration Risk [Member] | Sales Revenue Product Line [Member]      
Significant Customer and Other Information [Abstract]      
Concentration risk percentage [1] 28.00% 29.00% 30.00%
Other Products [Member] | Product Concentration Risk [Member] | Sales Revenue Product Line [Member]      
Significant Customer and Other Information [Abstract]      
Concentration risk percentage 4.00% 4.00% 4.00%
[1] During the year ended March 31, 2026, the Company combined its wheel hub products into its brake-related products. Prior year amounts have been recast to conform to the current year presentation.