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v3.25.3

Significant Customer and Other Information - Significant Customer and Other Information (Details) | 3 Months Ended | 6 Months Ended | 12 Months Ended
--- | --- | --- | ---
Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024 | Mar. 31, 2025
Customer Concentration Risk [Member] | Customer A [Member] | Net Sales [Member] |  |  |  |  |
Significant Customer and Other Information [Abstract] |  |  |  |  |
Concentration risk percentage | 38.00% | 34.00% | 38.00% | 37.00% |
Customer Concentration Risk [Member] | Customer A [Member] | Accounts Receivable - Trade [Member] |  |  |  |  |
Significant Customer and Other Information [Abstract] |  |  |  |  |
Concentration risk percentage |  |  | 36.00% |  | 41.00%
Customer Concentration Risk [Member] | Customer B [Member] | Net Sales [Member] |  |  |  |  |
Significant Customer and Other Information [Abstract] |  |  |  |  |
Concentration risk percentage | 28.00% | 21.00% | 26.00% | 20.00% |
Customer Concentration Risk [Member] | Customer B [Member] | Accounts Receivable - Trade [Member] |  |  |  |  |
Significant Customer and Other Information [Abstract] |  |  |  |  |
Concentration risk percentage |  |  | 34.00% |  | 26.00%
Customer Concentration Risk [Member] | Customer C [Member] | Net Sales [Member] |  |  |  |  |
Significant Customer and Other Information [Abstract] |  |  |  |  |
Concentration risk percentage | 21.00% | 31.00% | 21.00% | 29.00% |
Customer Concentration Risk [Member] | Customer C [Member] | Accounts Receivable - Trade [Member] |  |  |  |  |
Significant Customer and Other Information [Abstract] |  |  |  |  |
Concentration risk percentage |  |  | 7.00% |  | 7.00%
Product Concentration Risk [Member] | Net Sales [Member] |  |  |  |  |
Significant Customer and Other Information [Abstract] |  |  |  |  |
Concentration risk percentage | 100.00% | 100.00% | 100.00% | 100.00% |
Rotating Electrical Products [Member] | Product Concentration Risk [Member] | Net Sales [Member] |  |  |  |  |
Significant Customer and Other Information [Abstract] |  |  |  |  |
Concentration risk percentage | 69.00% | 68.00% | 68.00% | 67.00% |
Brake-Related Products [Member] | Product Concentration Risk [Member] | Net Sales [Member] |  |  |  |  |
Significant Customer and Other Information [Abstract] |  |  |  |  |
Concentration risk percentage | 21.00% | 21.00% | 22.00% | 22.00% |
Wheel Hub Products [Member] | Product Concentration Risk [Member] | Net Sales [Member] |  |  |  |  |
Significant Customer and Other Information [Abstract] |  |  |  |  |
Concentration risk percentage | 6.00% | 7.00% | 6.00% | 7.00% |
Other Products [Member] | Product Concentration Risk [Member] | Net Sales [Member] |  |  |  |  |
Significant Customer and Other Information [Abstract] |  |  |  |  |
Concentration risk percentage | 4.00% | 4.00% | 4.00% | 4.00% |

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