Company Background and Organization	3 Months Ended
Company Background and Organization	Jun. 30, 2020
Company Background and Organization [Abstract]
Company Background and Organization	1. Company Background and Organization Motorcar Parts of America, Inc. and its subsidiaries (the “Company” or “MPA”) is a leading supplier of automotive aftermarket non-discretionary replacement parts and diagnostic equipment. These replacement parts are primarily sold to automotive retail chain stores and warehouse distributors throughout North America and to major automobile manufacturers for both their aftermarket programs and warranty replacement programs (“OES”). The Company’s diagnostic equipment primarily serves the global automotive component and powertrain testing market. The Company’s products include (i) rotating electrical products such as alternators and starters, (ii) wheel hub assemblies and bearings, (iii) brake-related products, which include brake calipers, brake boosters, and brake master cylinders, and (iv) diagnostics and other products, which include diagnostics systems, advanced power emulators used for the development of electric vehicles and aerospace applications, and custom power electronic products for quality control in the development and production of electric vehicles and turbochargers. The Company primarily ships its products from its facilities and various third-party warehouse distribution centers in North America, including the Company’s 410,000 square foot distribution center in Tijuana, Mexico. Pursuant to the guidance provided under the Financial Accounting Standards Board (“FASB”) Accounting Standards Codification (“ASC”) for segment reporting, the Company has identified its chief operating decision maker (“CODM”), reviewed the documents used by the CODM, and understands how such documents are used by the CODM to make financial and operating decisions. The Company has determined through this review process that its business comprises three separate operating segments. Two of the operating segments meet all the aggregation criteria, and are aggregated. The remaining operating segment does not meet the quantitative thresholds for individual disclosure and the Company has combined its operating segments into one reportable segment. Impact of the Novel Coronavirus (“COVID-19”) The recent outbreak of the COVID-19 pandemic has led to adverse impacts on the U.S. and global economies and created uncertainty regarding potential effects on the Company’s employees, supply chain, operations, and customer demand. The COVID-19 pandemic could impact the Company’s operations and the operations of its customers, suppliers, and vendors because of quarantines, facility closures, travel, and logistics restrictions. The extent to which the COVID-19 pandemic impacts the Company’s business, results of operations, and financial condition will depend on future developments, which are highly uncertain and cannot be predicted— including, but not limited to, the duration, spread, severity, and impact of the COVID-19 pandemic, the effects of the COVID-19 pandemic on its customers, suppliers, and vendors and the remedial actions and stimulus measures adopted by local, state and federal governments, and to what extent normal economic and operating conditions can resume. Even after the COVID-19 pandemic has subsided, the Company may continue to experience adverse impacts to its business because of an economic recession or depression that has occurred or may occur in the future. At this time, the Company is unable to predict accurately the ultimate long-term impact that COVID-19 will have on its business and financial condition.