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Intangible Assets - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended				12 Months Ended
	Dec. 31, 2020	Sep. 27, 2020	Jun. 28, 2020	Mar. 29, 2020	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	May 26, 2020
Finite-Lived Intangible Assets [Line Items]
Intangible asset impairment charges	$ 0	$ 0	$ 19,571	$ 0	$ 19,571	$ 0	$ 0
Accumulated amortization	58,120				58,120	53,984
Completed Technologies [Member]
Finite-Lived Intangible Assets [Line Items]
Accumulated amortization	12,397				12,397	9,160
Customer Contracts And Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Accumulated amortization	$ 7,160				$ 7,160	$ 6,402
Sualab Co., Ltd. [Member] \| In Process Research and Development [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible asset impairment charges			5,900
Sualab Co., Ltd. [Member] \| Completed Technologies [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible asset impairment charges			10,070
Sualab Co., Ltd. [Member] \| Customer Contracts And Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible asset impairment charges			3,382
EnShape GmbH [Abstract] \| Customer Contracts And Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible asset impairment charges			219
Intangible assets			$ 0					$ 447
Accumulated amortization								$ 228