3.23.1 html 272 584 1 false 83 0 false 10 false false R1.htm 000100 - Document - Document and Entity Information Sheet http://motorcarparts.com/role/DocumentAndEntityInformation Document and Entity Information Cover 1 false false R2.htm 010000 - Statement - Consolidated Balance Sheets Sheet http://motorcarparts.com/role/ConsolidatedBalanceSheets Consolidated Balance Sheets Statements 2 false false R3.htm 010100 - Statement - Consolidated Balance Sheets (Parenthetical) Sheet http://motorcarparts.com/role/ConsolidatedBalanceSheetsParenthetical Consolidated Balance Sheets (Parenthetical) Statements 3 false false R4.htm 020000 - Statement - Consolidated Statements of Operations Sheet http://motorcarparts.com/role/ConsolidatedStatementsOfOperations Consolidated Statements of Operations Statements 4 false false R5.htm 030000 - Statement - Consolidated Statements of Comprehensive Income Sheet http://motorcarparts.com/role/ConsolidatedStatementsOfComprehensiveIncome Consolidated Statements of Comprehensive Income Statements 5 false false R6.htm 040000 - Statement - Consolidated Statements of Shareholders' Equity Sheet http://motorcarparts.com/role/ConsolidatedStatementsOfShareholdersEquity Consolidated Statements of Shareholders' Equity Statements 6 false false R7.htm 050000 - Statement - Consolidated Statements of Cash Flows Sheet http://motorcarparts.com/role/ConsolidatedStatementsOfCashFlows Consolidated Statements of Cash Flows Statements 7 false false R8.htm 060100 - Disclosure - Company Background and Organization Sheet http://motorcarparts.com/role/CompanyBackgroundAndOrganization Company Background and Organization Notes 8 false false R9.htm 060200 - Disclosure - Summary of Significant Accounting Policies Sheet http://motorcarparts.com/role/SummaryOfSignificantAccountingPolicies Summary of Significant Accounting Policies Notes 9 false false R10.htm 060300 - Disclosure - Goodwill and Intangible Assets Sheet http://motorcarparts.com/role/GoodwillAndIntangibleAssets Goodwill and Intangible Assets Notes 10 false false R11.htm 060400 - Disclosure - Accounts Receivable - Net Sheet http://motorcarparts.com/role/AccountsReceivableNet Accounts Receivable - Net Notes 11 false false R12.htm 060500 - Disclosure - Inventory Sheet http://motorcarparts.com/role/Inventory Inventory Notes 12 false false R13.htm 060600 - Disclosure - Contract Assets Sheet http://motorcarparts.com/role/ContractAssets Contract Assets Notes 13 false false R14.htm 060700 - Disclosure - Plant and Equipment Sheet http://motorcarparts.com/role/PlantAndEquipment Plant and Equipment Notes 14 false false R15.htm 060800 - Disclosure - Debt Sheet http://motorcarparts.com/role/Debt Debt Notes 15 false false R16.htm 060900 - Disclosure - Contract Liabilities Sheet http://motorcarparts.com/role/ContractLiabilities Contract Liabilities Notes 16 false false R17.htm 061000 - Disclosure - Leases Sheet http://motorcarparts.com/role/Leases Leases Notes 17 false false R18.htm 061100 - Disclosure - Accounts Receivable Discount Programs Sheet http://motorcarparts.com/role/AccountsReceivableDiscountPrograms Accounts Receivable Discount Programs Notes 18 false false R19.htm 061200 - Disclosure - Financial Risk Management and Derivatives Sheet http://motorcarparts.com/role/FinancialRiskManagementAndDerivatives Financial Risk Management and Derivatives Notes 19 false false R20.htm 061300 - Disclosure - Fair Value Measurements Sheet http://motorcarparts.com/role/FairValueMeasurements Fair Value Measurements Notes 20 false false R21.htm 061400 - Disclosure - Commitments and Contingencies Sheet http://motorcarparts.com/role/CommitmentsAndContingencies Commitments and Contingencies Notes 21 false false R22.htm 061500 - Disclosure - Significant Customer and Other Information Sheet http://motorcarparts.com/role/SignificantCustomerAndOtherInformation Significant Customer and Other Information Notes 22 false false R23.htm 061600 - Disclosure - Income Taxes Sheet http://motorcarparts.com/role/IncomeTaxes Income Taxes Notes 23 false false R24.htm 061700 - Disclosure - Defined Contribution Plans Sheet http://motorcarparts.com/role/DefinedContributionPlans Defined Contribution Plans Notes 24 false false R25.htm 061800 - Disclosure - Share-based Payments Sheet http://motorcarparts.com/role/SharebasedPayments Share-based Payments Notes 25 false false R26.htm 061900 - Disclosure - Segment Information Sheet http://motorcarparts.com/role/SegmentInformation Segment Information Notes 26 false false R27.htm 062000 - Disclosure - Share Repurchase Program Sheet http://motorcarparts.com/role/ShareRepurchaseProgram Share Repurchase Program Notes 27 false false R28.htm 062100 - Disclosure - Related Party Transactions Sheet http://motorcarparts.com/role/RelatedPartyTransactions Related Party Transactions Notes 28 false false R29.htm 062200 - Disclosure - Employee Retention Credit Sheet http://motorcarparts.com/role/EmployeeRetentionCredit Employee Retention Credit Notes 29 false false R30.htm 062300 - Schedule - Schedule II - Valuation and Qualifying Accounts Sheet http://motorcarparts.com/role/ScheduleIiValuationAndQualifyingAccounts Schedule II - Valuation and Qualifying Accounts Uncategorized 30 false false R31.htm 070200 - Disclosure - Summary of Significant Accounting Policies (Policies) Sheet http://motorcarparts.com/role/SummaryOfSignificantAccountingPoliciesPolicies Summary of Significant Accounting Policies (Policies) Notes 31 false false R32.htm 080200 - Disclosure - Summary of Significant Accounting Policies (Tables) Sheet http://motorcarparts.com/role/SummaryOfSignificantAccountingPoliciesTables Summary of Significant Accounting Policies (Tables) Tables http://motorcarparts.com/role/SummaryOfSignificantAccountingPolicies 32 false false R33.htm 080300 - Disclosure - Goodwill and Intangible Assets (Tables) Sheet http://motorcarparts.com/role/GoodwillAndIntangibleAssetsTables Goodwill and Intangible Assets (Tables) Tables http://motorcarparts.com/role/GoodwillAndIntangibleAssets 33 false false R34.htm 080400 - Disclosure - Accounts Receivable - Net (Tables) Sheet http://motorcarparts.com/role/AccountsReceivableNetTables Accounts Receivable - Net (Tables) Tables http://motorcarparts.com/role/AccountsReceivableNet 34 false false R35.htm 080500 - Disclosure - Inventory (Tables) Sheet http://motorcarparts.com/role/InventoryTables Inventory (Tables) Tables http://motorcarparts.com/role/Inventory 35 false false R36.htm 080600 - Disclosure - Contract Assets (Tables) Sheet http://motorcarparts.com/role/ContractAssetsTables Contract Assets (Tables) Tables http://motorcarparts.com/role/ContractAssets 36 false false R37.htm 080700 - Disclosure - Plant and Equipment (Tables) Sheet http://motorcarparts.com/role/PlantAndEquipmentTables Plant and Equipment (Tables) Tables http://motorcarparts.com/role/PlantAndEquipment 37 false false R38.htm 080800 - Disclosure - Debt (Tables) Sheet http://motorcarparts.com/role/DebtTables Debt (Tables) Tables http://motorcarparts.com/role/Debt 38 false false R39.htm 080900 - Disclosure - Contract Liabilities (Tables) Sheet http://motorcarparts.com/role/ContractLiabilitiesTables Contract Liabilities (Tables) Tables http://motorcarparts.com/role/ContractLiabilities 39 false false R40.htm 081000 - Disclosure - Leases (Tables) Sheet http://motorcarparts.com/role/LeasesTables Leases (Tables) Tables http://motorcarparts.com/role/Leases 40 false false R41.htm 081100 - Disclosure - Accounts Receivable Discount Programs (Tables) Sheet http://motorcarparts.com/role/AccountsReceivableDiscountProgramsTables Accounts Receivable Discount Programs (Tables) Tables http://motorcarparts.com/role/AccountsReceivableDiscountPrograms 41 false false R42.htm 081200 - Disclosure - Financial Risk Management and Derivatives (Tables) Sheet http://motorcarparts.com/role/FinancialRiskManagementAndDerivativesTables Financial Risk Management and Derivatives (Tables) Tables http://motorcarparts.com/role/FinancialRiskManagementAndDerivatives 42 false false R43.htm 081300 - Disclosure - Fair Value Measurements (Tables) Sheet http://motorcarparts.com/role/FairValueMeasurementsTables Fair Value Measurements (Tables) Tables http://motorcarparts.com/role/FairValueMeasurements 43 false false R44.htm 081400 - Disclosure - Commitments and Contingencies (Tables) Sheet http://motorcarparts.com/role/CommitmentsAndContingenciesTables Commitments and Contingencies (Tables) Tables http://motorcarparts.com/role/CommitmentsAndContingencies 44 false false R45.htm 081500 - Disclosure - Significant Customer and Other Information (Tables) Sheet http://motorcarparts.com/role/SignificantCustomerAndOtherInformationTables Significant Customer and Other Information (Tables) Tables http://motorcarparts.com/role/SignificantCustomerAndOtherInformation 45 false false R46.htm 081600 - Disclosure - Income Taxes (Tables) Sheet http://motorcarparts.com/role/IncomeTaxesTables Income Taxes (Tables) Tables http://motorcarparts.com/role/IncomeTaxes 46 false false R47.htm 081800 - Disclosure - Share-based Payments (Tables) Sheet http://motorcarparts.com/role/SharebasedPaymentsTables Share-based Payments (Tables) Tables http://motorcarparts.com/role/SharebasedPayments 47 false false R48.htm 081900 - Disclosure - Segment Information (Tables) Sheet http://motorcarparts.com/role/SegmentInformationTables Segment Information (Tables) Tables http://motorcarparts.com/role/SegmentInformation 48 false false R49.htm 090100 - Disclosure - Company Background and Organization (Details) Sheet http://motorcarparts.com/role/CompanyBackgroundAndOrganizationDetails Company Background and Organization (Details) Details http://motorcarparts.com/role/CompanyBackgroundAndOrganization 49 false false R50.htm 090200 - Disclosure - Summary of Significant Accounting Policies, Segment Reporting (Details) Sheet http://motorcarparts.com/role/SummaryOfSignificantAccountingPoliciesSegmentReportingDetails Summary of Significant Accounting Policies, Segment Reporting (Details) Details 50 false false R51.htm 090202 - Disclosure - Summary of Significant Accounting Policies, Inventory, Inventory Unreturned and Contract Assets (Details) Sheet http://motorcarparts.com/role/SummaryOfSignificantAccountingPoliciesInventoryInventoryUnreturnedAndContractAssetsDetails Summary of Significant Accounting Policies, Inventory, Inventory Unreturned and Contract Assets (Details) Details 51 false false R52.htm 090204 - Disclosure - Summary of Significant Accounting Policies, Plant and Equipment (Details) Sheet http://motorcarparts.com/role/SummaryOfSignificantAccountingPoliciesPlantAndEquipmentDetails Summary of Significant Accounting Policies, Plant and Equipment (Details) Details 52 false false R53.htm 090206 - Disclosure - Summary of Significant Accounting Policies, Leases (Details) Sheet http://motorcarparts.com/role/SummaryOfSignificantAccountingPoliciesLeasesDetails Summary of Significant Accounting Policies, Leases (Details) Details http://motorcarparts.com/role/SummaryOfSignificantAccountingPoliciesTables 53 false false R54.htm 090208 - Disclosure - Summary of Significant Accounting Policies, Goodwill and Intangible Assets (Details) Sheet http://motorcarparts.com/role/SummaryOfSignificantAccountingPoliciesGoodwillAndIntangibleAssetsDetails Summary of Significant Accounting Policies, Goodwill and Intangible Assets (Details) Details 54 false false R55.htm 090210 - Disclosure - Summary of Significant Accounting Policies, Foreign Currency Translation (Details) Sheet http://motorcarparts.com/role/SummaryOfSignificantAccountingPoliciesForeignCurrencyTranslationDetails Summary of Significant Accounting Policies, Foreign Currency Translation (Details) Details 55 false false R56.htm 090212 - Disclosure - Summary of Significant Accounting Policies, Revenue Recognition (Details) Sheet http://motorcarparts.com/role/SummaryOfSignificantAccountingPoliciesRevenueRecognitionDetails Summary of Significant Accounting Policies, Revenue Recognition (Details) Details 56 false false R57.htm 090214 - Disclosure - Summary of Significant Accounting Policies, Advertising Costs (Details) Sheet http://motorcarparts.com/role/SummaryOfSignificantAccountingPoliciesAdvertisingCostsDetails Summary of Significant Accounting Policies, Advertising Costs (Details) Details 57 false false R58.htm 090216 - Disclosure - Summary of Significant Accounting Policies, Net (Loss) Income Per Share (Details) Sheet http://motorcarparts.com/role/SummaryOfSignificantAccountingPoliciesNetLossIncomePerShareDetails Summary of Significant Accounting Policies, Net (Loss) Income Per Share (Details) Details http://motorcarparts.com/role/SummaryOfSignificantAccountingPoliciesTables 58 false false R59.htm 090218 - Disclosure - Summary of Significant Accounting Policies, Deferred Compensation Plan (Details) Sheet http://motorcarparts.com/role/SummaryOfSignificantAccountingPoliciesDeferredCompensationPlanDetails Summary of Significant Accounting Policies, Deferred Compensation Plan (Details) Details 59 false false R60.htm 090300 - Disclosure - Goodwill and Intangible Assets, Goodwill (Details) Sheet http://motorcarparts.com/role/GoodwillAndIntangibleAssetsGoodwillDetails Goodwill and Intangible Assets, Goodwill (Details) Details 60 false false R61.htm 090302 - Disclosure - Goodwill and Intangible Assets, Intangible Assets Subject to Amortization (Details) Sheet http://motorcarparts.com/role/GoodwillAndIntangibleAssetsIntangibleAssetsSubjectToAmortizationDetails Goodwill and Intangible Assets, Intangible Assets Subject to Amortization (Details) Details 61 false false R62.htm 090304 - Disclosure - Goodwill and Intangible Assets, Amortization Expense (Details) Sheet http://motorcarparts.com/role/GoodwillAndIntangibleAssetsAmortizationExpenseDetails Goodwill and Intangible Assets, Amortization Expense (Details) Details 62 false false R63.htm 090400 - Disclosure - Accounts Receivable - Net (Details) Sheet http://motorcarparts.com/role/AccountsReceivableNetDetails Accounts Receivable - Net (Details) Details http://motorcarparts.com/role/AccountsReceivableNetTables 63 false false R64.htm 090500 - Disclosure - Inventory (Details) Sheet http://motorcarparts.com/role/InventoryDetails Inventory (Details) Details http://motorcarparts.com/role/InventoryTables 64 false false R65.htm 090600 - Disclosure - Contract Assets (Details) Sheet http://motorcarparts.com/role/ContractAssetsDetails Contract Assets (Details) Details http://motorcarparts.com/role/ContractAssetsTables 65 false false R66.htm 090700 - Disclosure - Plant and Equipment (Details) Sheet http://motorcarparts.com/role/PlantAndEquipmentDetails Plant and Equipment (Details) Details http://motorcarparts.com/role/PlantAndEquipmentTables 66 false false R67.htm 090800 - Disclosure - Debt, Revolving Facility and Term loans (Details) Sheet http://motorcarparts.com/role/DebtRevolvingFacilityAndTermLoansDetails Debt, Revolving Facility and Term loans (Details) Details 67 false false R68.htm 090804 - Disclosure - Debt, Convertible Notes (Details) Notes http://motorcarparts.com/role/DebtConvertibleNotesDetails Debt, Convertible Notes (Details) Details 68 false false R69.htm 090900 - Disclosure - Contract Liabilities (Details) Sheet http://motorcarparts.com/role/ContractLiabilitiesDetails Contract Liabilities (Details) Details http://motorcarparts.com/role/ContractLiabilitiesTables 69 false false R70.htm 091000 - Disclosure - Leases, General Information (Details) Sheet http://motorcarparts.com/role/LeasesGeneralInformationDetails Leases, General Information (Details) Details 70 false false R71.htm 091002 - Disclosure - Leases, Balance Sheet Information (Details) Sheet http://motorcarparts.com/role/LeasesBalanceSheetInformationDetails Leases, Balance Sheet Information (Details) Details 71 false false R72.htm 091004 - Disclosure - Leases, Cost Recognized in Consolidated Statement of Operations (Details) Sheet http://motorcarparts.com/role/LeasesCostRecognizedInConsolidatedStatementOfOperationsDetails Leases, Cost Recognized in Consolidated Statement of Operations (Details) Details 72 false false R73.htm 091006 - Disclosure - Leases, Maturities of Lease Commitments, Operating and Finance Leases (Details) Sheet http://motorcarparts.com/role/LeasesMaturitiesOfLeaseCommitmentsOperatingAndFinanceLeasesDetails Leases, Maturities of Lease Commitments, Operating and Finance Leases (Details) Details 73 false false R74.htm 091008 - Disclosure - Leases, Other Information (Details) Sheet http://motorcarparts.com/role/LeasesOtherInformationDetails Leases, Other Information (Details) Details 74 false false R75.htm 091100 - Disclosure - Accounts Receivable Discount Programs (Details) Sheet http://motorcarparts.com/role/AccountsReceivableDiscountProgramsDetails Accounts Receivable Discount Programs (Details) Details http://motorcarparts.com/role/AccountsReceivableDiscountProgramsTables 75 false false R76.htm 091200 - Disclosure - Financial Risk Management and Derivatives (Details) Sheet http://motorcarparts.com/role/FinancialRiskManagementAndDerivativesDetails Financial Risk Management and Derivatives (Details) Details http://motorcarparts.com/role/FinancialRiskManagementAndDerivativesTables 76 false false R77.htm 091300 - Disclosure - Fair Value Measurements (Details) Sheet http://motorcarparts.com/role/FairValueMeasurementsDetails Fair Value Measurements (Details) Details http://motorcarparts.com/role/FairValueMeasurementsTables 77 false false R78.htm 091400 - Disclosure - Commitments and Contingencies (Details) Sheet http://motorcarparts.com/role/CommitmentsAndContingenciesDetails Commitments and Contingencies (Details) Details http://motorcarparts.com/role/CommitmentsAndContingenciesTables 78 false false R79.htm 091500 - Disclosure - Significant Customer and Other Information (Details) Sheet http://motorcarparts.com/role/SignificantCustomerAndOtherInformationDetails Significant Customer and Other Information (Details) Details http://motorcarparts.com/role/SignificantCustomerAndOtherInformationTables 79 false false R80.htm 091600 - Disclosure - Income Taxes, Domestic and Foreign Components of Income (Loss) Before Income Taxes (Details) Sheet http://motorcarparts.com/role/IncomeTaxesDomesticAndForeignComponentsOfIncomeLossBeforeIncomeTaxesDetails Income Taxes, Domestic and Foreign Components of Income (Loss) Before Income Taxes (Details) Details 80 false false R81.htm 091602 - Disclosure - Income Taxes, Income Tax Expense (Details) Sheet http://motorcarparts.com/role/IncomeTaxesIncomeTaxExpenseDetails Income Taxes, Income Tax Expense (Details) Details 81 false false R82.htm 091604 - Disclosure - Income Taxes, Components of Deferred Income Taxes (Details) Sheet http://motorcarparts.com/role/IncomeTaxesComponentsOfDeferredIncomeTaxesDetails Income Taxes, Components of Deferred Income Taxes (Details) Details 82 false false R83.htm 091606 - Disclosure - Income Taxes, Statutory Rate and Effective Tax Rate Reconciliation (Details) Sheet http://motorcarparts.com/role/IncomeTaxesStatutoryRateAndEffectiveTaxRateReconciliationDetails Income Taxes, Statutory Rate and Effective Tax Rate Reconciliation (Details) Details 83 false false R84.htm 091608 - Disclosure - Income Taxes, Unrecognized Tax Benefits (Details) Sheet http://motorcarparts.com/role/IncomeTaxesUnrecognizedTaxBenefitsDetails Income Taxes, Unrecognized Tax Benefits (Details) Details 84 false false R85.htm 091700 - Disclosure - Defined Contribution Plans (Details) Sheet http://motorcarparts.com/role/DefinedContributionPlansDetails Defined Contribution Plans (Details) Details http://motorcarparts.com/role/DefinedContributionPlans 85 false false R86.htm 091800 - Disclosure - Share-based Payments, Summary (Details) Sheet http://motorcarparts.com/role/SharebasedPaymentsSummaryDetails Share-based Payments, Summary (Details) Details 86 false false R87.htm 091802 - Disclosure - Share-based Payments, Stock Option Activity (Details) Sheet http://motorcarparts.com/role/SharebasedPaymentsStockOptionActivityDetails Share-based Payments, Stock Option Activity (Details) Details 87 false false R88.htm 091804 - Disclosure - Share-based Payments, Information About Options Outstanding (Details) Sheet http://motorcarparts.com/role/SharebasedPaymentsInformationAboutOptionsOutstandingDetails Share-based Payments, Information About Options Outstanding (Details) Details 88 false false R89.htm 091806 - Disclosure - Share-based Payments, Restricted Stock Units (Details) Sheet http://motorcarparts.com/role/SharebasedPaymentsRestrictedStockUnitsDetails Share-based Payments, Restricted Stock Units (Details) Details 89 false false R90.htm 091808 - Disclosure - Share-based Payments - Performance Stock Units (Details) Sheet http://motorcarparts.com/role/SharebasedPaymentsPerformanceStockUnitsDetails Share-based Payments - Performance Stock Units (Details) Details 90 false false R91.htm 091900 - Disclosure - Segment Information (Details) Sheet http://motorcarparts.com/role/SegmentInformationDetails Segment Information (Details) Details http://motorcarparts.com/role/SegmentInformationTables 91 false false R92.htm 092000 - Disclosure - Share Repurchase Program (Details) Sheet http://motorcarparts.com/role/ShareRepurchaseProgramDetails Share Repurchase Program (Details) Details http://motorcarparts.com/role/ShareRepurchaseProgram 92 false false R93.htm 092100 - Disclosure - Related Party Transactions (Details) Sheet http://motorcarparts.com/role/RelatedPartyTransactionsDetails Related Party Transactions (Details) Details http://motorcarparts.com/role/RelatedPartyTransactions 93 false false R94.htm 092200 - Disclosure - Employee Retention Credit (Details) Sheet http://motorcarparts.com/role/EmployeeRetentionCreditDetails Employee Retention Credit (Details) Details http://motorcarparts.com/role/EmployeeRetentionCredit 94 false false R95.htm 092300 - Schedule - Schedule II - Valuation and Qualifying Accounts (Details) Sheet http://motorcarparts.com/role/ScheduleIiValuationAndQualifyingAccountsDetails Schedule II - Valuation and Qualifying Accounts (Details) Details 95 false false All Reports Book All Reports [ix-0514-Hidden-Fact-Eligible-For-Transform] WARN: 11 fact(s) appearing in ix:hidden were eligible for transformation: dei:CurrentFiscalYearEndDate, dei:EntityRegistrantName, mpaa:AmortizationPeriodForCorePremiums, mpaa:AmortizationPeriodForFinishedGoodsPremiums, us-gaap:LesseeFinanceLeaseTermOfContract1, us-gaap:OperatingLossCarryforwardsExpirationDate, us-gaap:PropertyPlantAndEquipmentUsefulLife, us-gaap:TaxCreditCarryforwardExpirationDate - brhc20054204_10k.htm 11 brhc20054204_10k.htm brhc20054204_ex10-26.htm brhc20054204_ex21-1.htm brhc20054204_ex23-1.htm brhc20054204_ex31-1.htm brhc20054204_ex31-2.htm brhc20054204_ex31-3.htm brhc20054204_ex32-1.htm brhc20054204_ex4-12.htm brhc20054204_ex4-13.htm mpaa-20230331.xsd mpaa-20230331_cal.xml mpaa-20230331_def.xml mpaa-20230331_lab.xml mpaa-20230331_pre.xml image00001.jpg http://fasb.org/srt/2022 http://fasb.org/us-gaap/2022 http://xbrl.sec.gov/dei/2022 true true