The Company - Additional Information (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended	1 Months Ended
Dec. 31, 2014 Segment	Feb. 28, 2014
Nature Of Company [Line Items]
Number of reportable segments	2us-gaap_NumberOfReportableSegments
Number of operating segments	3us-gaap_NumberOfOperatingSegments
North American Electronics Manufacturing Joint Venture
Nature Of Company [Line Items]
Gain realized from step acquisition of subsidiary		$ 785

Number of operating segments. An operating segment is a component of an enterprise: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same enterprise), (b) whose operating results are regularly reviewed by the enterprise's chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance, and (c) for which discrete financial information is available. An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues.

No definition available.

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