Document and Entity Information - shares	3 Months Ended
	Oct. 02, 2016	Nov. 07, 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	Oct. 02, 2016
Amendment Flag	false
Current Fiscal Year End Date	--06-30
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Filer Category	Smaller Reporting Company
Entity Common Stock, Shares Outstanding		18,795,509
Document Fiscal Year Focus	2017
Document Fiscal Period Focus	Q1