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Contract Liabilities | 6 Months Ended
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Sep. 30, 2019
Contract Liabilities [Abstract] |
Contract Liabilities |
8. | Contract Liabilities
Contract liabilities are comprised of the following:
|  | September 30, 2019 |  |  | March 31, 2019 |
Short-term contract liabilities |  |  |  |
Customer allowances earned |  | $ | 10,365,000 |  |  | $ | 12,755,000 |
Customer core returns accruals |  |  | 3,973,000 |  |  |  | 3,933,000 |
Customer deposits |  |  | 1,377,000 |  |  |  | 2,674,000 |
Accrued core payment, net |  |  | 8,349,000 |  |  |  | 11,237,000 |
Total short-term contract liabilities |  | $ | 24,064,000 |  |  | $ | 30,599,000 |
Long-term contract liabilities |  |  |  |  |
Customer core returns accruals |  | $ | 38,841,000 |  |  | $ | 25,722,000 |
Accrued core payment, net |  |  | 10,486,000 |  |  |  | 15,167,000 |
Total long-term contract liabilities |  | $ | 49,327,000 |  |  | $ | 40,889,000 |

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- Definition The entire disclosure for contract liabilities with customers. + References No definition available. + Details
Name: | mpaa_ContractLiabilitiesTextBlock
Namespace Prefix: | mpaa_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

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