Goodwill and Intangible Assets

12 Months Ended

Dec. 31, 2020

Goodwill and Intangible Assets Disclosure [Abstract]

Goodwill and Intangible Assets

Goodwill and Intangible Assets

Goodwill consists of the following (in thousands):

	Years Ended December 31,
	2020		2019
Beginning balance	$	214,513	$	149,524
Additions due to acquisitions	70,167		65,181
Foreign currency translation adjustment	822		(192)
Measurement period adjustments related to prior acquisition	(288)		—
Ending balance	$	285,214	$	214,513

Intangible assets as of December 31, 2020 and December 31, 2019 consist of the following (in thousands, except weighted-average amortization period):

	December 31, 2020
	Weighted-Average Amortization Period (in months)	Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount
Developed technologies	75	$	54,398	$	(24,246)	$	30,152
Content library	60	12,230		(4,390)		7,840
Customer lists	47	16,190		(10,437)		5,753
Trade and domain names	44	11,613		(7,888)		3,725
Non-compete agreements	31	2,018		(1,981)		37
Indefinite-lived trade name	—	3,600		—		3,600
Foreign currency translation adjustment	—	142		—		142
Total intangible assets	64	$	100,191	$	(48,942)	$	51,249

	December 31, 2019
	Weighted-Average Amortization Period (in months)	Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount
Developed technologies	68	$	31,038	$	(16,451)	$	14,587
Content library	60	12,230		(1,944)		10,286
Customer lists	47	9,970		(8,210)		1,760
Trade and domain names	46	10,873		(6,169)		4,704
Non-compete agreements	31	2,018		(1,890)		128
Indefinite-lived trade name	—	3,600		—		3,600
Foreign currency translation adjustment	—	(398)		—		(398)
Total intangible assets	58	$	69,331	$	(34,664)	$	34,667

The indefinite-lived trade name intangible asset of $3.6 million is related to the internships.com trade name. During the years ended December 31, 2020, 2019 and 2018, amortization expense related to our acquired intangible assets totaled approximately $14.3 million, $7.5 million and $6.5 million, respectively.

As of December 31, 2020, the estimated future amortization expense related to our finite-lived intangible assets is as follows (in thousands):

2021	$	13,320
2022	10,889
2023	8,760
2024	5,707
2025	3,893
Thereafter	5,080
Total	$	47,649