XML 27 R13.htm IDEA: XBRL DOCUMENT
v3.8.0.1

Short-Term Investments | 12 Months Ended
--- | ---
Mar. 31, 2018
Short-Term Investments [Abstract] |
Short-Term Investments | 5. Short-Term Investments The short-term investments contain the assets of the Company’s deferred compensation plan. The plan’s assets consist primarily of mutual funds and are classified as available for sale. The Company did not redeem any short-term investments for the payment of deferred compensation liabilities during the years ended March 31, 2018 and 2017. At March 31, 2018 and 2017, the fair market value of the short-term investments was $2,828,000 and $2,140,000, and the deferred compensation liability to plan participants was $2,828,000 and $2,140,000, respectively.

X
- Definition The entire disclosure of the short-term investments. Short-term investments may include current marketable securities. + References No definition available. + Details
Name: | mpaa_ShortTermInvestmentsTextBlock
Namespace Prefix: | mpaa_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

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