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Acquisitions - Sualab Co., Ltd. Narrative (Details) - USD ($) $ in Thousands |  |  | 3 Months Ended | 12 Months Ended
--- | --- | --- | --- | ---
Oct. 16, 2019 | Apr. 12, 2017 | Dec. 31, 2020 | Sep. 27, 2020 | Jun. 28, 2020 | Mar. 29, 2020 | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Intangible asset impairment charges |  |  | $ 0 | $ 0 | $ 19,571 | $ 0 | $ 19,571 | $ 0 | $ 0
Sualab Co., Ltd. [Member] |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Tax deductible goodwill | $ 104,609 |  |  |  |  |  |  |  |
Purchase price | 193,638 |  |  |  |  |  |  |  |
Cash paid in purchase price | 170,602 |  |  |  |  |  |  |  |
Contingent consideration liabilities | $ 24,040 |  |  |  |  |  |  |  |
Sualab Co., Ltd. [Member] | In Process Research and Development [Member] |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Intangible asset impairment charges |  |  |  |  | 5,900 |  |  |  |
Sualab Co., Ltd. [Member] | Maximum [Member] | In-process Technology [Member] |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Intangible assets, useful life | 6 years |  |  |  |  |  |  |  |
Sualab Co., Ltd. [Member] | Completed Technology [Member] |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Intangible assets, useful life | 8 years |  |  |  |  |  |  |  |
Sualab Co., Ltd. [Member] | Customer Relationships [Member] |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Intangible assets, useful life | 7 years |  |  |  |  |  |  |  |
Sualab Co., Ltd. [Member] | Trademarks [Member] |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Intangible assets, useful life | 2 years |  |  |  |  |  |  |  |
Sualab Co., Ltd. [Member] | Non-compete agreements | Minimum [Member] |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Intangible assets, useful life |  | 6 years |  |  |  |  |  |  |
Sualab Co., Ltd. [Member] | Non-compete agreements | Maximum [Member] |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Intangible assets, useful life | 7 years |  |  |  |  |  |  |  |
Sualab Co., Ltd. [Member] | Completed Technologies [Member] |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Intangible asset impairment charges |  |  |  |  | 10,070 |  |  |  |
Sualab Co., Ltd. [Member] | Customer Contracts And Relationships [Member] |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Intangible asset impairment charges |  |  |  |  | $ 3,382 |  |  |  |

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