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	$ 37,817
Customer Relationships
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets	22,294
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 Trade Names
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	$ 1,269
Amortization Period of intangible assets	1 year