Legal Proceedings - Additional Information (Detail)	Nov. 27, 2013 LegalMatter
Carag
Loss Contingencies [Line Items]
Number of putative shareholder derivative complaints filed	1

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

Name:	us-gaap_LossContingenciesLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration