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Contract Liabilities (Details) - USD ($)	3 Months Ended	6 Months Ended
	Sep. 30, 2025	Sep. 30, 2025
Contract Liabilities [Abstract]
Remanufactured core revenue	$ 14,797,000	$ 14,797,000

X

- Definition

Remanufactured core revenue recognized during the period in connection with the realignment of inventory at certain customer distribution centers.

+ References

No definition available.

+ Details

Name:	mpaa_RemanufacturedCoreRevenue
Namespace Prefix:	mpaa_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- References

No definition available.

+ Details

Name:	us-gaap_ContractWithCustomerLiabilityAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration