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Financial Risk Management and Derivatives - Derivative Instruments on Consolidated Statements of Operations (Details) - USD ($)	12 Months Ended
	Mar. 31, 2025	Mar. 31, 2024	Mar. 31, 2023
Forward Foreign Currency Exchange Contracts [Member] | Foreign Exchange Impact of Lease Liabilities and Forward Contracts [Member]
Foreign Currency Exchange Contracts [Abstract]
Forward foreign currency exchange contracts	$ (4,179,000)	$ (1,373,000)	$ 2,776,000

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- Definition

Amount of gain (loss) from the increase (decrease) in fair value of foreign currency exchange contract derivatives not designated as hedging instruments.

+ References

No definition available.

+ Details

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

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 815
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 4E
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480434/815-10-50-4E

+ Details

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X

- Details

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Namespace Prefix:
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Balance Type:
Period Type:

X

- Details

Name:	us-gaap_IncomeStatementLocationAxis=mpaa_ForeignCurrencyTransactionGainLossMember
Namespace Prefix:
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Period Type: