Document and Entity Information (USD $)	12 Months Ended
	Mar. 31, 2011	May 23, 2011	Sep. 30, 2010
Document and Entity Information [Abstract]
Entity Registrant Name	QUALITY SYSTEMS, INC
Entity Central Index Key	0000708818
Document Type	10-K
Document Period End Date	Mar. 31, 2011
Amendment Flag	false
Document Fiscal Year Focus	2011
Document Fiscal Period Focus	FY
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	Large Accelerated Filer
Entity Public Float			$ 1,276,253,000
Entity Common Stock, Shares Outstanding		29,179,390