Goodwill and Purchased Intangible Assets - Textual (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Goodwill And Intangible Assets Disclosure [Abstract]
Amortization of intangibles	$ 10,445	$ 1,534	$ 1,940
Estimated amortization expense, next twelve months	53,741
Estimated amortization expense, 2021	48,009
Estimated amortization expense, 2022	47,610
Estimated amortization expense, 2023	47,135
Estimated amortization expense, 2024	$ 41,450