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Acquisitions - Allocation of Acquired Intangible Assets and Related Estimates of Useful Lives (Detail) - USD ($)
$ in Thousands
 3 Months Ended 12 Months Ended
May. 30, 2015
Mar. 17, 2015
May. 30, 2014
Mar. 31, 2015
Dec. 31, 2014
Acquired Finite-Lived Intangible Assets [Line Items]          
Acquired intangible assets, purchase price       $ 5,110  
Precisive, LLC [Member]          
Acquired Finite-Lived Intangible Assets [Line Items]          
Acquired intangible assets, purchase price   $ 5,110      
Granville-Phillips [Member]          
Acquired Finite-Lived Intangible Assets [Line Items]          
Acquired intangible assets, purchase price     $ 38,850   $ 38,850
Order Backlog [Member] | Precisive, LLC [Member]          
Acquired Finite-Lived Intangible Assets [Line Items]          
Acquired intangible assets, purchase price   $ 50      
Estimated useful life of finite-lived intangible assets   18 months      
Customer Relationships [Member]          
Acquired Finite-Lived Intangible Assets [Line Items]          
Acquired intangible assets, purchase price       $ 1,430  
Customer Relationships [Member] | Precisive, LLC [Member]          
Acquired Finite-Lived Intangible Assets [Line Items]          
Acquired intangible assets, purchase price   $ 1,430      
Estimated useful life of finite-lived intangible assets   8 years      
Customer Relationships [Member] | Granville-Phillips [Member]          
Acquired Finite-Lived Intangible Assets [Line Items]          
Acquired intangible assets, purchase price     21,250   $ 21,250
Estimated useful life of finite-lived intangible assets 7 years        
Exclusive Patent License [Member] | Precisive, LLC [Member]          
Acquired Finite-Lived Intangible Assets [Line Items]          
Acquired intangible assets, purchase price   $ 2,600      
Estimated useful life of finite-lived intangible assets   10 years      
Trade names [Member] | Precisive, LLC [Member]          
Acquired Finite-Lived Intangible Assets [Line Items]          
Acquired intangible assets, purchase price   $ 210      
Estimated useful life of finite-lived intangible assets   10 years      
Current Developed Technology [Member] | Precisive, LLC [Member]          
Acquired Finite-Lived Intangible Assets [Line Items]          
Acquired intangible assets, purchase price   $ 820      
Estimated useful life of finite-lived intangible assets   10 years      
Current Developed Technology [Member] | Granville-Phillips [Member]          
Acquired Finite-Lived Intangible Assets [Line Items]          
Acquired intangible assets, purchase price     15,700    
Current Developed Technology [Member] | Granville-Phillips [Member] | Minimum [Member]          
Acquired Finite-Lived Intangible Assets [Line Items]          
Estimated useful life of finite-lived intangible assets 9 years        
Current Developed Technology [Member] | Granville-Phillips [Member] | Maximum [Member]          
Acquired Finite-Lived Intangible Assets [Line Items]          
Estimated useful life of finite-lived intangible assets 12 years        
Trademarks and Trade Names [Member] | Granville-Phillips [Member]          
Acquired Finite-Lived Intangible Assets [Line Items]          
Acquired intangible assets, purchase price     $ 1,900    
Estimated useful life of finite-lived intangible assets 12 years