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Acquisitions - Sualab Co., Ltd. Narrative (Details) - Sualab Co., Ltd. [Member] - USD ($) $ in Thousands	Oct. 16, 2019	Apr. 12, 2017
Business Acquisition [Line Items]
Tax deductible goodwill	$ 104,609
Purchase price	194,642
Cash paid in purchase price	170,602
Contingent consideration liabilities	$ 24,040
Completed Technology [Member]
Business Acquisition [Line Items]
Intangible assets, useful life	8 years
Customer Relationships [Member]
Business Acquisition [Line Items]
Intangible assets, useful life	7 years
Trademarks [Member]
Business Acquisition [Line Items]
Intangible assets, useful life	2 years
Non-compete agreements \| Minimum [Member]
Business Acquisition [Line Items]
Intangible assets, useful life		6 years
Non-compete agreements \| Maximum [Member]
Business Acquisition [Line Items]
Intangible assets, useful life	7 years