v3.3.1.900
Document and Entity Information - shares
9 Months Ended
Dec. 31, 2015
Feb. 02, 2016
Document and Entity Information [Abstract]    
Entity Registrant Name MOTORCAR PARTS AMERICA INC  
Entity Central Index Key 0000918251  
Current Fiscal Year End Date --03-31  
Entity Well-known Seasoned Issuer No  
Entity Voluntary Filers No  
Entity Current Reporting Status Yes  
Entity Filer Category Accelerated Filer  
Entity Common Stock, Shares Outstanding   18,326,985
Document Fiscal Year Focus 2016  
Document Fiscal Period Focus Q3  
Document Type 10-Q  
Amendment Flag false  
Document Period End Date Dec. 31, 2015