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Goodwill and Intangible Assets, net - Additional Information (Detail) (USD $)
 12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Goodwill And Intangible Assets [Line Items]      
Accumulated impairment losses $ 0us-gaap_GoodwillImpairedAccumulatedImpairmentLoss $ 0us-gaap_GoodwillImpairedAccumulatedImpairmentLoss  
Amortization expense 4,237,000us-gaap_AmortizationOfIntangibleAssets 2,880,000us-gaap_AmortizationOfIntangibleAssets 3,027,000us-gaap_AmortizationOfIntangibleAssets
Total estimated amortization expense, 2015 6,321,000us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths    
Total estimated amortization expense, 2016 6,321,000us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo    
Total estimated amortization expense, 2017 6,072,000us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree    
Total estimated amortization expense, 2018 5,462,000us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour    
Total estimated amortization expense, 2019 5,139,000us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive    
Total estimateed amortization expense, thereafter $ 17,204,000us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive    
Weighted Average | Patents, related technologies and know-how      
Goodwill And Intangible Assets [Line Items]      
Expected useful life of intangible asset 11 years 6 months 11 days    
Weighted Average | Customer relationships      
Goodwill And Intangible Assets [Line Items]      
Expected useful life of intangible asset 6 years 5 months 19 days    
Weighted Average | Trademarks      
Goodwill And Intangible Assets [Line Items]      
Expected useful life of intangible asset 8 years 5 months 1 day