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Acquisition and Divestiture - Additional Information (Detail) - USD ($)
$ in Thousands
 1 Months Ended 3 Months Ended 6 Months Ended
Jan. 31, 2020
Jun. 30, 2020
Jun. 30, 2020
Jun. 30, 2019
Business Acquisition [Line Items]        
Purchases of businesses, net of cash acquired     $ 116,509 $ 0
Gain (Loss) On Disposition Of Business     141,020 $ 0
2020 Consolidated Acquisition        
Business Acquisition [Line Items]        
Purchases of businesses, net of cash acquired $ 116,500      
Total other intangible assets acquired $ 59,500 $ 59,500 59,500  
Finite-lived intangible assets acquired   50,500    
Future amortization expense, year one   3,000 3,000  
Future amortization expense, year two   3,000 3,000  
Future amortization expense, year three   3,000 3,000  
Future amortization expense, year four   3,000 3,000  
Future amortization expense, year five   3,000 $ 3,000  
2020 Consolidated Acquisition | Trade Names        
Business Acquisition [Line Items]        
Indefinite-lived intangible trade names acquired   9,000    
2020 Consolidated Acquisition | Customer Relationship        
Business Acquisition [Line Items]        
Finite-lived intangible assets acquired   $ 38,000    
Amortization period for finite-lived intangible asset   20 years    
2020 Consolidated Acquisition | Purchased Technology        
Business Acquisition [Line Items]        
Finite-lived intangible assets acquired   $ 12,500    
Amortization period for finite-lived intangible asset     15 years  
Kymera International        
Business Acquisition [Line Items]        
Business Combination, Consideration Transferred   245,300    
Income Tax Expense Relating To Sale Of Business   31,400    
Kymera International | Other Income        
Business Acquisition [Line Items]        
Gain (Loss) On Disposition Of Business   $ (141,000)