Business Segment, Geographic Area, Product and Significant Customer Information - Additional Information (Detail) - 6 months ended Jun. 30, 2015	Segment Product Customer
Segment Reporting [Abstract]
Number of reportable segments \| Segment	4
Number of product groups	3
Number of customers with net revenues greater than 10% of total net revenues \| Customer	2

Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements.

No definition available.

Name:	us-gaap_NumberOfReportableSegments
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration