Document and Entity Information - shares	9 Months Ended
	Mar. 27, 2016	Apr. 28, 2016
Document and Entity Information [Abstract]
Entity Registrant Name	ARC Group Worldwide, Inc.
Entity Central Index Key	0000826326
Document Type	10-Q
Document Period End Date	Mar. 27, 2016
Amendment Flag	false
Current Fiscal Year End Date	--06-30
Entity Current Reporting Status	Yes
Entity Filer Category	Smaller Reporting Company
Entity Common Stock, Shares Outstanding		18,795,509
Document Fiscal Year Focus	2016
Document Fiscal Period Focus	Q3