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Data Type:	num:perShareItemType
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Period Type:	instant

The adjusted exercise price per share of warrants or rights outstanding.

No definition available.

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Data Type:	num:perShareItemType
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Period Type:	instant

Fair value of warrants and rights outstanding.

No definition available.

Name:	mpaa_ClassOfWarrantsOrRightsFairValueOfWarrants
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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

The percentage points added to the reference rate to compute the variable rate on the debt instrument under option two of the credit agreement.

No definition available.

Name:	mpaa_DebtInstrumentBasisSpreadOnVariableRateOption2
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Data Type:	num:percentItemType
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Period Type:	instant

For the disposal group, including a component of the entity (discontinued operation), amount of revolving facility as the borrowers were not in compliance with this financial covenant under the credit agreement to be repaid within one year or the normal operating cycle.

No definition available.

Name:	mpaa_DisposalGroupIncludingDiscontinuedOperationsRevolvingLoanInDefault
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Data Type:	xbrli:monetaryItemType
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Period Type:	instant

For the disposal group, including a component of the entity (discontinued operation), amount of term loan as the borrowers were not in compliance with this financial covenant under the credit agreement to be repaid within one year or the normal operating cycle.

No definition available.

Name:	mpaa_DisposalGroupIncludingDiscontinuedOperationsTermLoanInDefault
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Data Type:	xbrli:monetaryItemType
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Period Type:	instant

The maximum amount of equity interests for which the company has a right to repurchase, subject to certain conditions.

No definition available.

Name:	mpaa_EquityInterestsRightOfRepurchaseMaximum
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Data Type:	xbrli:monetaryItemType
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Period Type:	instant

Percentage of likelihood of future financing, used as an input to measure fair value.

No definition available.

Name:	mpaa_FairValueInputsProbabilityOfFutureFinancing
Namespace Prefix:	mpaa_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

The minimum aggregate level of liquidity required to be maintained by the company as of the specified date under the debt agreement.

No definition available.

Name:	mpaa_FinancialCovenantsLiquidityMinimum
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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

The amount of the increase, or decrease, in the maximum borrowing capacity of a debt instrument pursuant to an amendment to the debt agreement.

No definition available.

Name:	mpaa_IncreaseDecreaseInMaximumBorrowingCapacity
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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Represents borrowing capacity available for accrued interest and other amounts payable under the credit facility.

No definition available.

Name:	mpaa_LineOfCreditFacilityAvailableForAccruedInterestAndOtherAmountsPayable
Namespace Prefix:	mpaa_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

The interest rate, per month, of unpaid amounts under the line of credit facility beginning on the reported date.

No definition available.

Name:	mpaa_LineOfCreditFacilityInterestRatePerMonth
Namespace Prefix:	mpaa_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

The maximum amount of a debt instrument for which the company has the right to prepay, within a specified period, without incurring a prepayment penalty.

No definition available.

Name:	mpaa_MaximumPrepaymentAmount
Namespace Prefix:	mpaa_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

The number of days subsequent to the amendment effective date for which the company has the right to repay a specified amount on the debt instrument.

No definition available.

Name:	mpaa_NumberOfDaysPrepaymentPenaltyWaived
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Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	instant

Represents the period within which payment for all purchases made under the agreement will be due and payable before accruing interest.

No definition available.

Name:	mpaa_PaymentTermsUnderStrategicCooperationAgreement
Namespace Prefix:	mpaa_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

A penalty for prepayment of debt presented as a percentage of the sum of the reduction of the revolving credit commitment plus the principal amount of any prepayment of the term loan during the specified period.

No definition available.

Name:	mpaa_PrepaymentPenalty
Namespace Prefix:	mpaa_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

The floor to which the reference rate (e.g., LIBOR) is subject.

No definition available.

Name:	mpaa_ReferenceInterestRateUnderOption1Floor
Namespace Prefix:	mpaa_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

Exercise price per share or per unit of warrants or rights outstanding.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 235

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.4-08.(i)(4))

-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

Reference 2: http://www.xbrl.org/2003/role/presentationRef

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-Name Regulation S-X (SX)

-Number 210

-Section 08

-Paragraph i

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Number of securities into which the class of warrant or right may be converted. For example, but not limited to, 500,000 warrants may be converted into 1,000,000 shares.

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

-Publisher FASB

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-Topic 235

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Data Type:	xbrli:sharesItemType
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Period Type:	instant

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

No definition available.

Name:	us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
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Data Type:	num:percentItemType
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The reference rate for the variable rate of the debt instrument, such as LIBOR or the US Treasury rate and the maturity of the reference rate used, such as three months or six months LIBOR.

No definition available.

Name:	us-gaap_DebtInstrumentDescriptionOfVariableRateBasis
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Data Type:	xbrli:stringItemType
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Contractual interest rate for funds borrowed, under the debt agreement.

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

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-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 22

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Reference 2: http://www.xbrl.org/2003/role/presentationRef

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- Details

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Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format.

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

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-Name Regulation S-X (SX)

-Number 210

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Amount of the required periodic payments applied to principal.

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

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-Number 210

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Expected dividends to be paid to holders of the underlying shares or financial instruments (expressed as a percentage of the share or instrument's price).

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

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Period the instrument, asset or liability is expected to be outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Measure of dispersion, in percentage terms (for instance, the standard deviation or variance), for a given stock price.

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Risk-free interest rate assumption used in valuing an instrument.

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Amount of gain (loss) recognized on the income statement for financial instrument classified as a liability measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

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

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Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity.

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

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Name:	us-gaap_GainsLossesOnExtinguishmentOfDebt
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Amount borrowed under the credit facility as of the balance sheet date.

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

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-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 19, 22

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Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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

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-Subparagraph (SX 210.5-02.19(b),22(b))

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Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

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The aggregate amount paid by the entity to reacquire the right to purchase equity shares at a predetermined price, usually issued together with corporate debt.

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

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-Name Accounting Standards Codification

-Glossary Financing Activities

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Reference 2: http://www.xbrl.org/2003/role/presentationRef

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The cash inflow during the period from additional borrowings in aggregate debt. Includes proceeds from short-term and long-term debt.

No definition available.

Name:	us-gaap_ProceedsFromIssuanceOfDebt
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Cash outflows under financing arrangements with vendors (seller-financed debt), which had a maturity date at inception of more than one year (or more than one operating cycle, if longer); such debt may have arisen from purchases of property, plant and equipment or other productive assets.

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

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Price of a single share of a number of saleable stocks of a company.