Amount of valuation reserve for inventory.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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Reference 2: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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Reference 3: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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Reference 4: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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-Section 35
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Name:	us-gaap_InventoryValuationReserves
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Basis of Presentation - Narrative (Details) - USD ($) $ in Thousands	Mar. 21, 2017	Feb. 28, 2018	May 31, 2017
Business Acquisition [Line Items]
Reserve for obsolete inventory		$ 38,500	$ 38,300
G&K Services
Business Acquisition [Line Items]
Consideration transferred	$ 2,112,811