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Business Combinations - Schedule of Assets Acquired and Liabilities Assumed (Details) - USD ($)
Jul. 04, 2020
Sep. 28, 2019
Oct. 05, 2018
Business Acquisition [Line Items]      
Goodwill $ 98,647,000 $ 427,101,000  
Ondax Inc.      
Business Acquisition [Line Items]      
Cash     $ 103,000
Accounts receivable     534,000
Inventories     1,793,000
Prepaid expenses and other assets     17,000
Deferred tax assets     681,000
Property and equipment     122,000
Liabilities assumed     (499,000)
Goodwill     3,333,000
Total     11,984,000
Ondax Inc. | Developed Technology Rights      
Business Acquisition [Line Items]      
Intangible assets     5,600,000
Ondax Inc. | Customer relationships      
Business Acquisition [Line Items]      
Intangible assets     300,000
Quantum Coating, Inc.      
Business Acquisition [Line Items]      
Property and equipment     2,770,000
Total     7,000,000
Quantum Coating, Inc. | Developed Technology Rights      
Business Acquisition [Line Items]      
Intangible assets     1,600,000
Quantum Coating, Inc. | Customer relationships      
Business Acquisition [Line Items]      
Intangible assets     230,000
Quantum Coating, Inc. | Backlog      
Business Acquisition [Line Items]      
Intangible assets     100,000
Quantum Coating, Inc. | Other Intangible Assets      
Business Acquisition [Line Items]      
Intangible assets     $ 2,300,000