Amortization Expense of Intangible Assets (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jul. 03, 2020	Jun. 28, 2019	Jul. 03, 2020	Jun. 28, 2019
Goodwill And Intangible Assets Disclosure [Abstract]
Amortization expense – cost of revenue	$ 2,716	$ 2,446	$ 5,450	$ 4,757
Amortization expense – operating expenses	3,410	3,772	6,855	7,770
Total amortization expense	$ 6,126	$ 6,218	$ 12,305	$ 12,527

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
-Publisher FASB
-Name Accounting Standards Codification
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
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Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
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