Goodwill and Intangible Assets - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Finite-Lived Intangible Assets [Line Items]
Definite-lived intangible assets	$ 7,100
Amortization of intangible assets	9,700	$ 8,800	$ 27,747	$ 29,505
Intangible assets, amortization expense
Remaining of 2019	9,500		9,500
2020	37,600		37,600
2021	36,300		36,300
2022	34,700		34,700
2023	31,800		$ 31,800
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Definite-lived intangible assets	6,100
Unpatented technology
Finite-Lived Intangible Assets [Line Items]
Definite-lived intangible assets	$ 1,000