Document and Entity Information - shares	3 Months Ended
	Jun. 30, 2019	Jul. 22, 2019
Document And Entity Information [Abstract]
Entity Registrant Name	NEXTGEN HEALTHCARE, INC.
Trading Symbol	NXGN
Entity Central Index Key	0000708818
Document Type	10-Q
Document Period End Date	Jun. 30, 2019
Amendment Flag	false
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	Q1
Current Fiscal Year End Date	--03-31
Entity Filer Category	Large Accelerated Filer
Entity Current Reporting Status	Yes
Entity Small Business	false
Entity Shell Company	false
Entity Emerging Growth Company	false
Entity File Number	001-12537
Entity Tax Identification Number	952888568
Entity Address, Address Line One	18111 Von Karman Avenue
Entity Address, Address Line Two	Suite 800
Entity Address, City or Town	Irvine
Entity Address, State or Province	California
Entity Address, Postal Zip Code	92612
City Area Code	(949)
Local Phone Number	255-2600
Entity Common Stock, Shares Outstanding		65,381,886