Goodwill and Intangible Assets - Schedule of Intangible Assets (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Acquired Finite-Lived Intangible Assets [Line Items]
Total intangible assets	$ 171,589	$ 172,225
Less: accumulated amortization	(78,337)	(71,643)
Net carrying amount	93,252	100,582
2019	21,861
2020	19,371
2021	17,336
2022	13,673
2023	7,764
Thereafter	13,247
Total future amortization expense	93,252
Developed technology
Acquired Finite-Lived Intangible Assets [Line Items]
Total intangible assets	113,759	114,395
Patents
Acquired Finite-Lived Intangible Assets [Line Items]
Total intangible assets	57,180	57,180
Other
Acquired Finite-Lived Intangible Assets [Line Items]
Total intangible assets	$ 650	$ 650