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Goodwill and Intangible Assets - Intangible Assets (Parenthetical) (Detail) - USD ($)
$ in Thousands
3 Months Ended
Feb. 01, 2019
Mar. 31, 2019
Dec. 31, 2018
Finite-Lived Intangible Assets [Line Items]      
Accumulated Amortization   $ 256,328 $ 244,025
Customer Relationships [Member]      
Finite-Lived Intangible Assets [Line Items]      
Accumulated Amortization   68,738 63,788
Patents, Trademarks, Trade Names and Other [Member]      
Finite-Lived Intangible Assets [Line Items]      
Accumulated Amortization   40,976 $ 42,954
Electro Scientific Industries Inc [Member]      
Finite-Lived Intangible Assets [Line Items]      
Acquired intangible assets, purchase price $ 318,600 318,600  
Finite lived intangible asset , gross favorable lease   6,428  
Electro Scientific Industries Inc [Member] | Customer Relationships [Member]      
Finite-Lived Intangible Assets [Line Items]      
Acquired intangible assets, purchase price $ 25,400 25,400  
Electro Scientific Industries Inc [Member] | Patents, Trademarks, Trade Names and Other [Member]      
Finite-Lived Intangible Assets [Line Items]      
Accumulated Amortization   3,445  
Electro Scientific Industries Inc [Member] | Completed Technology [Member]      
Finite-Lived Intangible Assets [Line Items]      
Acquired intangible assets, purchase price   276,400  
Electro Scientific Industries Inc [Member] | Trademarks Tradenames and Backlog [Member]      
Finite-Lived Intangible Assets [Line Items]      
Acquired intangible assets, purchase price   $ 16,800