Business Acquired - Summary of Estimated Fair Value of Assets Acquired and Liabilities Assumed (Parenthetical) (Detail) (SPTS Technologies Group Limited [Member])	0 Months Ended
Aug. 07, 2014
Backlog [Member]
Business Acquisition [Line Items]
Property amortization period	1 year 6 months
Customer Relations and Trade Names [Member]
Business Acquisition [Line Items]
Property amortization period	5 years
Maximum [Member] \| Technology and Intellectual Property [Member]
Business Acquisition [Line Items]
Property amortization period	7 years

Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

No definition available.

Name:	us-gaap_FiniteLivedIntangibleAssetUsefulLife
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration