XML 100 R86.htm IDEA: XBRL DOCUMENT
v3.8.0.1

Subsequent Events (Details) - USD ($) | 12 Months Ended |
--- | --- | ---
Mar. 31, 2018 | Jun. 05, 2018
Letters of Credit [Member] |  |
Credit Facility [Abstract] |  |
Maximum borrowing capacity | $ 15,000,000 |
Revolving Facility [Member] |  |
Credit Facility [Abstract] |  |
Maximum borrowing capacity | 120,000,000 |
Term Loans [Member] |  |
Credit Facility [Abstract] |  |
Maximum borrowing capacity | $ 25,000,000 |
New Credit Facility [Member] |  |
Credit Facility [Abstract] |  |
Debt instrument, maturity date | Jun. 05, 2023 |
Subsequent Event [Member] | New Credit Facility [Member] | Revolving Facility [Member] |  |
Credit Facility [Abstract] |  |
Maximum borrowing capacity |  | $ 200,000,000
Subsequent Event [Member] | New Credit Facility [Member] | Revolving Facility [Member] | Canadian Borrowers [Member] |  |
Credit Facility [Abstract] |  |
Maximum borrowing capacity |  | 20,000,000
Subsequent Event [Member] | New Credit Facility [Member] | Revolving Facility [Member] | Letters of Credit [Member] |  |
Credit Facility [Abstract] |  |
Maximum borrowing capacity |  | 15,000,000
Subsequent Event [Member] | New Credit Facility [Member] | Term Loans [Member] |  |
Credit Facility [Abstract] |  |
Maximum borrowing capacity |  | $ 30,000,000

X
- Definition Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(2)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_DebtInstrumentMaturityDate
Namespace Prefix: | us-gaap_
Data Type: | xbrli:dateItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_LineOfCreditFacilityAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition 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. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Details
Name: | us-gaap_CreditFacilityAxis=us-gaap_LetterOfCreditMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LongtermDebtTypeAxis=us-gaap_RevolvingCreditFacilityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LongtermDebtTypeAxis=us-gaap_LoansPayableMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=mpaa_ParentCompanyNewCreditAgreementMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_CreditFacilityAxis=mpaa_RevolvingCreditFacilityCanadianBorrowersMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |