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Accrued Core Payment | 12 Months Ended
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Mar. 31, 2018
Accrued Core Payment [Abstract] |
Accrued Core Payment | 10. Accrued Core Payment At March 31, 2018 and 2017, the Company recorded $35,009,000 and $24,063,000, respectively, representing the net accrued core payment for the Remanufactured Core inventory purchased from its customers, which are held by these customers and remain on their premises. Future repayments for accrued core payment are as follows:
Year Ending March 31, |  |  |  |
2019 |  | $ | 17,421,000 |
2020 |  |  | 7,865,000 |
2021 |  |  | 6,651,000 |
2022 |  |  | 4,841,000 |
Total accrued core payment |  |  | 36,778,000 |
Less amount representing interest |  |  | (1,769,000 | )
Present value of accrued core payment |  |  | 35,009,000 |
Less current portion of accrued core payment |  |  | (16,536,000 | )
Long-term portion of accrued core payment |  | $ | 18,473,000 |

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- References No definition available. + Details
Name: | mpaa_AccruedCorePaymentAbstract
Namespace Prefix: | mpaa_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition The entire disclosure for information about accrued core payments for cores the entity purchases from its customers and held by these customers. + References No definition available. + Details
Name: | mpaa_AccruedCorePaymentTextBlock
Namespace Prefix: | mpaa_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration