Goodwill and Intangible Assets (Tables)

3 Months Ended

Mar. 31, 2019

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Goodwill

Goodwill balances are presented below (in thousands):

	Carrying Amount
Balance as of December 31, 2018	$	148,845
Foreign currency translation adjustments	2,339
Balance as of March 31, 2019	$	151,184

Schedule of Intangible Assets

Intangible assets consist of the following (in thousands):

	March 31,			December 31,
	2019			2018
Developed technology	$	113,759		$	114,395
Patents	57,180			57,180
Other	650			650
Total intangible assets	171,589			172,225
Less: accumulated amortization	(78,337		)	(71,643		)
Net carrying amount	$	93,252		$	100,582

Schedule of Estimated Future Amortization Expense Related to Intangible Assets

The following table presents the estimated future amortization expense related to intangible assets held at March 31, 2019 (in thousands):

Years Ending December 31,
Remainder of 2019	$	21,861
2020	19,371
2021	17,336
2022	13,673
2023	7,764
Thereafter	13,247
Total future amortization expense	$	93,252