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Acquisitions - Additional Information (Detail) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended 6 Months Ended
Feb. 01, 2019
Jun. 30, 2019
Jun. 30, 2018
Jun. 30, 2019
Jun. 30, 2018
Business Acquisition [Line Items]          
Business acquisition share price $ 30.00        
Stock-based compensation expense   $ 6,929 $ 6,366 $ 34,767 $ 16,792
Electro Scientific Industries Inc [Member]          
Business Acquisition [Line Items]          
Business acquisition share price $ 30.00        
Business acquisition, total cash consideration $ 1,032,671        
Non Cash Consideration related to share based compensation awards 30,630        
Total Purchase Consideration $ 1,063,301        
Fair value write-up of acquired finished goods inventory   7,624   7,624  
Incremental costs of sales charge   2,484   7,624  
Fair value write-up of acquired property, plant and equipment   39,267   $ 39,267  
Compensation expense   2,701      
Stock-based compensation expense   14,023      
Electro Scientific Industries Inc [Member] | Property Plant and Equipment [Member]          
Business Acquisition [Line Items]          
Assets, fair value adjustment   12,600      
Electro Scientific Industries Inc [Member] | Inventories [Member]          
Business Acquisition [Line Items]          
Assets, fair value adjustment   9,800      
Electro Scientific Industries Inc [Member] | Intangible assets [Member]          
Business Acquisition [Line Items]          
Assets, fair value adjustment   2,400      
Electro Scientific Industries Inc [Member] | Goodwill [Member]          
Business Acquisition [Line Items]          
Assets, fair value adjustment   $ 1,300