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.

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

Legal Proceedings - Additional Information (Detail) - LegalMatter	Dec. 21, 2018	Nov. 27, 2013
Loss Contingencies [Line Items]
Litigation Settlement Agreement, Attorney Fee Payment Percentage	50.00%
Carag
Loss Contingencies [Line Items]
Number of putative shareholder derivative complaints filed		1