Number of pending claims pertaining to a loss contingency.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 4
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=82911808&loc=d3e14435-108349

Name:	us-gaap_LossContingencyPendingClaimsNumber
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

Legal Proceedings - Additional Information (Detail)	Nov. 27, 2013 LegalMatter	Nov. 01, 2017 Case
Carag
Loss Contingencies [Line Items]
Number of putative shareholder derivative complaints filed \| LegalMatter	1
Cafe Manager Class Actions \| Pending Litigation
Loss Contingencies [Line Items]
Number of pending cases, consolidated by the Court \| Case		2