Document and Entity Information - shares	6 Months Ended
	Nov. 30, 2015	Jan. 04, 2016
Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Nov. 30, 2015
Document Fiscal Year Focus	2016
Document Fiscal Period Focus	Q2
Trading Symbol	ANGO
Entity Registrant Name	ANGIODYNAMICS INC
Entity Central Index Key	0001275187
Current Fiscal Year End Date	--05-31
Entity Filer Category	Accelerated Filer
Entity Common Stock, Shares Outstanding		36,285,557