Goodwill and Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2018

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Goodwill

Goodwill balances are presented below (in thousands):

	Carrying Amount
Balance as of December 31, 2016	$	82,534
Goodwill acquired	39,668
Foreign currency translation adjustments	6,526
Balance as of December 31, 2017	128,728
Goodwill acquired	26,063
Foreign currency translation adjustments	(5,946		)
Balance as of December 31, 2018	$	148,845

Schedule of Intangible Assets

Intangible assets consist of the following (in thousands):

	December 31,			December 31,
	2018			2017
Developed technology	$	114,395		$	102,349
Patents	57,180			31,030
Other	650			1,575
Total intangible assets	172,225			134,954
Less: accumulated amortization	(71,643		)	(48,038		)
Net carrying amount	$	100,582		$	86,916

Expected Future Amortization Expense Related to Intangible Assets

The following table presents the estimated future amortization expense related to intangible assets held at December 31, 2018 (in thousands):

Years Ending December 31,
2019	$	29,037
2020	19,447
2021	17,521
2022	13,608
2023	7,739
Thereafter	13,230
Total future amortization expense	$	100,582