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Acquisitions - Allocation of Acquired Intangible Assets and Related Estimates of Useful Lives (Detail) (USD $)
In Thousands, unless otherwise specified
 0 Months Ended
May 30, 2014
Acquired Finite-Lived Intangible Assets [Line Items]  
Acquired intangible assets, purchase price $ 39,050
Customer Relationships [Member]
  
Acquired Finite-Lived Intangible Assets [Line Items]  
Acquired intangible assets, purchase price 21,250
Trademarks and Trade Names [Member]
  
Acquired Finite-Lived Intangible Assets [Line Items]  
Acquired intangible assets, purchase price 2,100
Current Developed Technology [Member]
  
Acquired Finite-Lived Intangible Assets [Line Items]  
Acquired intangible assets, purchase price 15,700
Granville-Phillips [Member] | Customer Relationships [Member]
  
Acquired Finite-Lived Intangible Assets [Line Items]  
Acquired intangible assets, purchase price 21,250
Estimated useful life of finite lived intangible assets 7 years
Granville-Phillips [Member] | Trademarks and Trade Names [Member]
  
Acquired Finite-Lived Intangible Assets [Line Items]  
Acquired intangible assets, purchase price $ 2,100
Estimated useful life of finite lived intangible assets 12 years
Granville-Phillips [Member] | Current Developed Technology [Member] | Minimum [Member]
  
Acquired Finite-Lived Intangible Assets [Line Items]  
Estimated useful life of finite lived intangible assets 9 years
Granville-Phillips [Member] | Current Developed Technology [Member] | Maximum [Member]
  
Acquired Finite-Lived Intangible Assets [Line Items]  
Estimated useful life of finite lived intangible assets 12 years