Acquisition - SPG Purchase Price Allocation (Details) - USD ($) $ in Thousands	Jun. 25, 2018	Dec. 31, 2019	Dec. 31, 2018	Jun. 30, 2018	Dec. 31, 2017
Business Acquisition
Goodwill		$ 695,044	$ 550,202		$ 359,688
SPG acquisition
Business Acquisition
Trade accounts and notes receivable, net		19,173		$ 15,805
Inventories, net	$ 42,800	42,758		46,073
Other current assets		706		424
Property, plant and equipment, net	6,700	6,653		7,345
Identifiable intangible assets	150,430	150,430		178,220
Deferred tax asset		734		0
Other noncurrent assets		12		398
Current liabilities		(26,473)		(26,196)
Deferred tax liabilities		(35,271)		(42,110)
Other noncurrent liabilities		(1,412)		(1,006)
Net Assets Acquired		157,310		178,953
Goodwill	$ 184,200	184,180		162,251
Total Purchase Price		$ 341,490		$ 341,204
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	10 years
Developed Technology | SPG acquisition
Business Acquisition
Identifiable intangible assets	$ 20,070
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	8 years
Trademarks and Trade names | SPG acquisition
Business Acquisition
Identifiable intangible assets	$ 6,670
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	12 years
Customer Relationships | SPG acquisition
Business Acquisition
Identifiable intangible assets	$ 107,790
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	12 years
Other | SPG acquisition
Business Acquisition
Identifiable intangible assets	$ 15,900
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	10 months 24 days