Document And Entity Information (USD $)	3 Months Ended
	Jun. 30, 2011	Aug. 09, 2011	Sep. 30, 2010
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 Public Float			$ 93,626,542
Entity Common Stock, Shares Outstanding		12,449,221
Document Fiscal Year Focus	2012
Document Fiscal Period Focus	Q1
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Jun. 30, 2011