Intangible Assets - Summary of Amortization Expense for Acquired Intangibles (Details) - USD ($) $ in Thousands  | 
3 Months Ended | 9 Months Ended | ||
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Sep. 26, 2020  | 
Sep. 28, 2019  | 
Sep. 26, 2020  | 
Sep. 28, 2019  | 
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| Goodwill and Intangible Assets Disclosure [Abstract] | ||||
| Amortization Expense | $ 4,382 | $ 4,394 | $ 13,024 | $ 12,746 | 
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- Definition The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef 
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- References No definition available. 
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