Document and Entity Information (USD $) In Millions, except Share data, unless otherwise specified	12 Months Ended
	Jun. 30, 2014	Nov. 05, 2014	Dec. 31, 2013
Document And Entity Information
Entity Registrant Name	ARC Group Worldwide, Inc.
Entity Central Index Key	0000826326
Trading Symbol	ARCW
Current Fiscal Year End Date	--06-30
Entity Filer Category	Smaller Reporting Company
Document Type	10-K
Document Period End Date	Jun. 30, 2014
Document Fiscal Year Focus	2014
Document Fiscal Period Focus	FY
Amendment Flag	false
Entity Listing, Par Value Per Share	$ 0.0005
Entity Common Stock, Shares Outstanding		15,080,121
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Public Float			$ 37.3
Entity Public Float, Common Stock Shares			3,209,810
Entity Public Float, Stock Price Per Share			$ 11.64