Intangible Assets and Goodwill (Tables)

3 Months Ended

Mar. 31, 2019

Goodwill And Intangible Assets Disclosure [Abstract]

Schedule of Intangible Assets, net

As of March 31, 2019 and December 31, 2018, capitalized internal-use software consisted of the following:

(in thousands)	March 31, 2019			December 31, 2018
Gross capitalized internal-use software	$	113,298		$	109,133
Less: Accumulated amortization		(79,588	)		(75,853	)
Capitalized internal use software, net	$	33,710		$	33,280

As of March 31, 2019 and December 31, 2018, intangible assets, net consisted of the following:

	March 31, 2019							December 31, 2018
(in thousands)	Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount
Customer relationships	$	47,696	$	(42,839	)	$	4,857	$	47,696	$	(42,410	)	$	5,286
Trade name		6,072		(5,904	)		168		6,072		(5,796	)		276
Technology		22,007		(18,733	)		3,274		22,007		(18,245	)		3,762
Acquisition intangible assets, net	$	75,775	$	(67,476	)	$	8,299	$	75,775	$	(66,451	)	$	9,324

Summary of Future Amortization Expense

As of March 31, 2019, future amortization expense by year is expected to be as follows (in thousands):

(in thousands)	Capitalized internal-use software, net		Acquisition intangible assets, net
Remainder of 2019	$	9,241	$	2,814
2020		6,189		2,952
2021		1,353		1,705
2022		—		828
Total amortization expense	$	16,783	$	8,299

Schedule of Carrying Amount of Goodwill, Net

The changes in the carrying amount of goodwill were as follows (in thousands):

Balance as of December 31, 2018	$	336,861
Balance as of March 31, 2019	$	336,861