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Business Combinations - Schedule of Assets Acquired and Liabilities Assumed (Details) - USD ($)
$ in Thousands
Dec. 29, 2018
Oct. 05, 2018
Sep. 29, 2018
Mar. 08, 2018
Business Acquisition [Line Items]        
Goodwill $ 442,236   $ 442,940  
Ondax Inc.        
Business Acquisition [Line Items]        
Cash, cash equivalents and short-term investments   $ 103    
Accounts receivable   534    
Inventory   1,793    
Prepaid expenses and other assets   17    
Deferred tax assets   458    
Property and equipment   122    
Liabilities assumed   (499)    
Goodwill   3,556    
Total   11,984    
Ondax Inc. | Existing technology        
Business Acquisition [Line Items]        
Intangible assets:   5,600    
Ondax Inc. | Customer relationships        
Business Acquisition [Line Items]        
Intangible assets:   300    
Quantum Coating, Inc.        
Business Acquisition [Line Items]        
Property and equipment   2,770    
Total   7,000    
Quantum Coating, Inc. | Existing technology        
Business Acquisition [Line Items]        
Intangible assets:   1,600    
Quantum Coating, Inc. | Customer relationships        
Business Acquisition [Line Items]        
Intangible assets:   230    
Quantum Coating, Inc. | Production know-how        
Business Acquisition [Line Items]        
Intangible assets:   2,300    
Quantum Coating, Inc. | Backlog        
Business Acquisition [Line Items]        
Intangible assets:   $ 100    
O.R. Lasertechnologies GmbH        
Business Acquisition [Line Items]        
Cash, cash equivalents and short-term investments       $ 1,936
Accounts receivable       3,973
Inventory       2,360
Prepaid expenses and other assets       630
Property and equipment       1,515
Liabilities assumed       (5,119)
Deferred tax liabilities       (4,517)
Goodwill       31,456
Total       47,384
O.R. Lasertechnologies GmbH | Existing technology        
Business Acquisition [Line Items]        
Intangible assets:       14,100
O.R. Lasertechnologies GmbH | Non-competition        
Business Acquisition [Line Items]        
Intangible assets:       200
O.R. Lasertechnologies GmbH | Customer relationships        
Business Acquisition [Line Items]        
Intangible assets:       700
O.R. Lasertechnologies GmbH | Backlog        
Business Acquisition [Line Items]        
Intangible assets:       100
O.R. Lasertechnologies GmbH | Trademarks        
Business Acquisition [Line Items]        
Intangible assets:       $ 50