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Fair Value Measurement (Detail) - USD ($)
$ in Thousands
Dec. 31, 2015
Dec. 31, 2014
Jul. 04, 2014
Assets:      
Marketable securities $ 48,266 $ 47,833  
Foreign exchange contracts 9    
Liabilities:      
Foreign exchange contracts   64  
Contingent consideration   3,603  
Certificates of deposits      
Assets:      
Marketable securities 1 1,975  
Corporate bonds      
Assets:      
Marketable securities 48,265 45,858  
Level II      
Assets:      
Foreign exchange contracts 9    
Liabilities:      
Foreign exchange contracts   64  
Level II | Certificates of deposits      
Assets:      
Marketable securities 1 1,975  
Level II | Corporate bonds      
Assets:      
Marketable securities $ 48,265 45,858  
Level 3      
Liabilities:      
Contingent consideration   $ 3,603 $ 3,434