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Significant Customer and Other Information - Significant Customer and Other Information (Details)	3 Months Ended		12 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Mar. 31, 2025
Customer Concentration Risk [Member] | Customer A [Member] | Net Sales [Member]
Significant Customer and Other Information [Abstract]
Concentration risk percentage	39.00%	40.00%
Customer Concentration Risk [Member] | Customer A [Member] | Accounts Receivable - Trade [Member]
Significant Customer and Other Information [Abstract]
Concentration risk percentage	48.00%		41.00%
Customer Concentration Risk [Member] | Customer B [Member] | Net Sales [Member]
Significant Customer and Other Information [Abstract]
Concentration risk percentage	24.00%	17.00%
Customer Concentration Risk [Member] | Customer B [Member] | Accounts Receivable - Trade [Member]
Significant Customer and Other Information [Abstract]
Concentration risk percentage	23.00%		26.00%
Customer Concentration Risk [Member] | Customer C [Member] | Net Sales [Member]
Significant Customer and Other Information [Abstract]
Concentration risk percentage	22.00%	28.00%
Customer Concentration Risk [Member] | Customer C [Member] | Accounts Receivable - Trade [Member]
Significant Customer and Other Information [Abstract]
Concentration risk percentage	0.00%		7.00%
Product Concentration Risk [Member] | Net Sales [Member]
Significant Customer and Other Information [Abstract]
Concentration risk percentage	100.00%		100.00%
Rotating Electrical Products [Member] | Product Concentration Risk [Member] | Net Sales [Member]
Significant Customer and Other Information [Abstract]
Concentration risk percentage	66.00%		65.00%
Brake-Related Products [Member] | Product Concentration Risk [Member] | Net Sales [Member]
Significant Customer and Other Information [Abstract]
Concentration risk percentage	23.00%		24.00%
Wheel Hub Products [Member] | Product Concentration Risk [Member] | Net Sales [Member]
Significant Customer and Other Information [Abstract]
Concentration risk percentage	6.00%		7.00%
Other Products [Member] | Product Concentration Risk [Member] | Net Sales [Member]
Significant Customer and Other Information [Abstract]
Concentration risk percentage	5.00%		4.00%

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+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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