Intangible Assets

12 Months Ended

Dec. 31, 2018

Acquired Finite-Lived Intangible Assets [Line Items]

INTANGIBLE ASSETS

INTANGIBLE ASSETS

Intangible assets consisted of the following as of December 31, 2018 and 2017:

	December 31, 2018
	Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount
Technology	$	39,879	$	(7,927	)	$	31,952
Customer relationships	35,509		(13,484		)	22,025
Trademarks and other	2,501		(1,568		)	933
Total	$	77,889	$	(22,979	)	$	54,910

	December 31, 2017
	Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount
Technology	$	18,702	$	(5,559	)	$	13,143
Customer relationships	30,034		(10,787		)	19,247
Trademarks and other	2,623		(1,514		)	1,109
Total	$	51,359	$	(17,860	)	$	33,499

Amortization expense related to intangible assets is as follows:

	Years Ended December 31,
	2018		2017		2016
Amortization expense	$	5,774	$	4,350	$	4,167

Estimated amortization expense related to intangibles is as follows:

Year Ending December 31,
2019	$	7,589
2020	6,863
2021	6,763
2022	6,503
2023	6,484
Thereafter	20,708
Total	$	54,910