XML 55 R44.htm IDEA: XBRL DOCUMENT
v3.3.1.900

Major Customers (Details) | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | ---
Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2015 | Dec. 31, 2014 | Mar. 31, 2014
Sales [Member] | Customer A [Member] |  |  |  |  |
Concentration Risk [Line Items] |  |  |  |  |
Concentration risk percentage | 49.00% | 63.00% | 48.00% | 57.00% |
Sales [Member] | Customer B [Member] |  |  |  |  |
Concentration Risk [Line Items] |  |  |  |  |
Concentration risk percentage | 16.00% | 19.00% | 19.00% | 21.00% |
Sales [Member] | Customer C [Member] |  |  |  |  |
Concentration Risk [Line Items] |  |  |  |  |
Concentration risk percentage | 16.00% | 5.00% | 18.00% | 6.00% |
Sales [Member] | Customer D [Member] |  |  |  |  |
Concentration Risk [Line Items] |  |  |  |  |
Concentration risk percentage | 3.00% | 2.00% | 3.00% | 3.00% |
Accounts Receivable - Trade [Member] | Customer A [Member] |  |  |  |  |
Concentration Risk [Line Items] |  |  |  |  |
Concentration risk percentage |  |  | 39.00% |  | 48.00%
Accounts Receivable - Trade [Member] | Customer B [Member] |  |  |  |  |
Concentration Risk [Line Items] |  |  |  |  |
Concentration risk percentage |  |  | 18.00% |  | 16.00%
Accounts Receivable - Trade [Member] | Customer C [Member] |  |  |  |  |
Concentration Risk [Line Items] |  |  |  |  |
Concentration risk percentage |  |  | 10.00% |  | 12.00%
Accounts Receivable - Trade [Member] | Customer D [Member] |  |  |  |  |
Concentration Risk [Line Items] |  |  |  |  |
Concentration risk percentage |  |  | 10.00% |  | 4.00%
Significant Supplier Purchases [Member] | Supplier A [Member] |  |  |  |  |
Concentration Risk [Line Items] |  |  |  |  |
Concentration risk percentage |  |  |  | 10.00% |

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

X
- Definition For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 18 -URI http://asc.fasb.org/extlink&oid=51801978&loc=d3e6351-108592 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=49121117&loc=d3e13531-108611 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=51801978&loc=d3e6404-108592 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 21 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=49121117&loc=d3e13537-108611 + Details
Name: | us-gaap_ConcentrationRiskPercentage1
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_ConcentrationRiskByBenchmarkAxis=us-gaap_SalesRevenueGoodsNetMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MajorCustomersAxis=mpaa_CustomerAMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MajorCustomersAxis=mpaa_CustomerBMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MajorCustomersAxis=mpaa_CustomerCMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MajorCustomersAxis=mpaa_CustomerDMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ConcentrationRiskByBenchmarkAxis=us-gaap_AccountsReceivableMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ConcentrationRiskByBenchmarkAxis=mpaa_RawMaterialsPurchasesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ConcentrationRiskByTypeAxis=us-gaap_SupplierConcentrationRiskMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |