Description of Company - Additional Information (Detail) (WVS-Technology, USD $) In Millions, unless otherwise specified	Jul. 05, 2013
WVS-Technology
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items]
Business Acquisition, Transaction Costs	$ 1.0

Amount of direct costs of the business combination including legal, accounting, and other costs incurred to consummate the business acquisition.

No definition available.

Name:	us-gaap_BusinessAcquisitionCostOfAcquiredEntityTransactionCosts
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant