Goodwill and Intangible Assets, Net - Amortization Expense by Income Statement Caption (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Finite-Lived Intangible Assets [Line Items]
Amortization expense	$ 716	$ 1,906	$ 1,554	$ 3,720
Cost of sales
Finite-Lived Intangible Assets [Line Items]
Amortization expense	4	0	8	0
Selling, general and administrative expenses
Finite-Lived Intangible Assets [Line Items]
Amortization expense	$ 712	$ 1,906	$ 1,546	$ 3,720

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
-Topic 230
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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