Document and Entity Information - shares	6 Months Ended
	Jan. 01, 2017	Feb. 07, 2017
Document and Entity Information
Entity Registrant Name	ARC Group Worldwide, Inc.
Entity Central Index Key	0000826326
Document Type	10-Q
Document Period End Date	Jan. 01, 2017
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		18,843,252
Document Fiscal Year Focus	2017
Document Fiscal Period Focus	Q2