Summary of Significant Accounting Policies - Proposed Merger with Cintas Corporation (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended	6 Months Ended
Dec. 31, 2016	Dec. 26, 2015	Dec. 31, 2016	Dec. 26, 2015
Business Acquisition [Line Items]
Merger-related expenses	$ 10,067	$ 0	$ 16,123	$ 0
G&K Services and Cintas Merger
Business Acquisition [Line Items]
Merger-related expenses	10,067		16,123
After-tax effect of merger related costs	$ 8,754		$ 13,491
After-tax effect of merger related costs (in dollars per share)	$ 0.44		$ 0.68

This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 25
-Paragraph 23
-URI http://asc.fasb.org/extlink&oid=73531572&loc=d3e1043-128460

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration