Fair Value of Intangible Assets (Detail) (USD $) In Thousands, unless otherwise specified	1 Months Ended
	Jan. 15, 2013
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets	$ 37,003
Customer Relationship
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets	21,505
Amortization Period of intangible assets	20 years
Developed Technology
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets	6,689
Amortization Period of intangible assets	10 years
Trademarks And Tradenames
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets	7,565
Amortization Period of intangible assets	20 years
Backlog
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets	$ 1,244
Amortization Period of intangible assets	Less than 1 year