XML 30 R71.htm IDEA: XBRL DOCUMENT
v2.4.1.9

Defined Contribution Plans (Details) (401 (K) Plan [Member], USD $) | 1 Months Ended | 11 Months Ended | 12 Months Ended
--- | --- | --- | ---
Mar. 31, 2015 | Feb. 28, 2015 | Mar. 31, 2015 | Mar. 31, 2014 | Mar. 31, 2013
401 (K) Plan [Member] |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |
Minimum age required to participate in defined contribution plan |  |  | 21 years |  |
Minimum service period required to participate in defined contribution plan |  |  | 6 months |  |
Employer's matching contribution (in hundredths) | 50.00%us-gaap_DefinedContributionPlanEmployerMatchingContributionPercentOfMatch / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = us-gaap_PensionPlansDefinedBenefitMember | 25.00%us-gaap_DefinedContributionPlanEmployerMatchingContributionPercentOfMatch / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = us-gaap_PensionPlansDefinedBenefitMember |  |  |
Employer's maximum contribution specified as percentage of employee compensation (in hundredths) |  |  | 6.00%us-gaap_DefinedContributionPlanEmployerMatchingContributionPercent / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = us-gaap_PensionPlansDefinedBenefitMember |  |
Matching contributions vesting period |  |  | 5 years |  |
Matching contribution, amount |  |  | $ 145,000 us-gaap_DefinedContributionPlanCostRecognized / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = us-gaap_PensionPlansDefinedBenefitMember | $ 126,000 us-gaap_DefinedContributionPlanCostRecognized / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = us-gaap_PensionPlansDefinedBenefitMember | $ 117,000 us-gaap_DefinedContributionPlanCostRecognized / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = us-gaap_PensionPlansDefinedBenefitMember

X
- Definition The vesting period of employer's matching contribution over the period. + References No definition available. + Details
Name: | mpaa_MatchingContributionsVestingPeriod
Namespace Prefix: | mpaa_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition The minimum age of employees who are eligible to cover under defined contribution plan service. + References No definition available. + Details
Name: | mpaa_MinimumAgeRequiredToParticipateInDefinedContributionPlan
Namespace Prefix: | mpaa_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition The minimum service period of employees who are eligible to cover under defined contribution plan service. + References No definition available. + Details
Name: | mpaa_MinimumServicePeriodRequiredToParticipateInDefinedContributionPlan
Namespace Prefix: | mpaa_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_DefinedBenefitPlanDisclosureLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The amount of the cost recognized during the period for defined contribution plans. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 70 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6414718&loc=d3e28014-114942 + Details
Name: | us-gaap_DefinedContributionPlanCostRecognized
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Percentage of employees' gross pay for which the employer contributes a matching contribution to a defined contribution plan. + References No definition available. + Details
Name: | us-gaap_DefinedContributionPlanEmployerMatchingContributionPercent
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Percentage employer matches of the employee's percentage contribution matched. + References No definition available. + Details
Name: | us-gaap_DefinedContributionPlanEmployerMatchingContributionPercentOfMatch
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration