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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