Goodwill and Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2020

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Goodwill

The following table sets forth the changes in the carrying amount of goodwill and accumulated impairment loss for the Company for the years ended December 31, 2020 and 2019 (in thousands):

	Marketing Services		SaaS		Total
Balance as of December 31, 2018	$	—	$	—	$	609,457
Reallocations	390,573		218,884		609,457
Additions	—		—		—
Impairments	—		—		—
Balance as of December 31, 2019	$	390,573	$	218,884	$	609,457
Additions	—		—		—
Impairments	—		—		—
Balance as of December 31, 2020	$	390,573	$	218,884	$	609,457

Schedule of Finite-Lived Intangible Assets

The Company’s intangible assets and their estimated useful lives are presented in the table below:

	Estimated Useful Lives
Client relationships	3.5 - 4 years
Trademarks and domain names	2.5 - 6 years
Patented technologies	3 - 3.5 years
Covenants not to compete	3 years

The following tables set forth the details of the Company's intangible assets for the years ended December 31, 2020 and 2019 (in thousands):

	Year Ended December 31, 2020
	Gross		Accumulated Amortization		Net		Weighted Average Remaining Amortization Period in Years
Client relationships	$	701,802	$	701,518	$	284	1.4
Trademarks and domain names	200,300		169,545		30,755		2.0
Patented technologies	19,600		19,600		—		—
Covenants not to compete	1,497		759		738		1.8
Total intangible assets	$	923,199	$	891,422	$	31,777	2.0

	Year Ended December 31, 2019
	Gross		Accumulated Amortization		Net		Weighted Average Remaining Amortization Period in Years
Client relationships	$	701,802	$	616,187	$	85,615	1.0
Trademarks and domain names	200,300		139,767		60,533		2.6
Patented technologies	19,600		19,600		—		—
Covenants not to compete	1,588		256		1,332		2.5
Total intangible assets	$	923,290	$	775,810	$	147,480	1.7

The following tables summarize the changes in the carrying amounts of the Company's intangible assets for the years ended December 31, 2020 and 2019 (in thousands):

	Year Ended December 31, 2020
	Client relationships		Trademarks and domain names		Patented technologies		Covenants not to compete		Total Intangible assets
Balance as of January 1	$	85,615	$	60,533	$	—	$	1,332	$	147,480
Additions	—		—		—		192		192
Amortization expense	(85,331)		(29,778)		—		(504)		(115,613)
Other	—		—		—		(282)		(282)
Balance as of December 31	$	284	$	30,755	$	—	$	738	$	31,777

	Year Ended December 31, 2019
	Client relationships		Trademarks and domain names		Patented technologies		Covenants not to compete		Total Intangible assets
Balance as of January 1	$	211,811	$	96,537	$	3,894	$	—	$	312,242
Additions(1)	—		—		—		1,588		1,588
Amortization expense	(126,196)		(36,004)		(3,894)		(256)		(166,350)
Balance as of December 31	$	85,615	$	60,533	$	—	$	1,332	$	147,480

(1)     The Company acquired covenants not to compete during the year ended December 31, 2019.

Schedule of Finite-Lived Intangible Assets, Future Amortization Expense

Estimated aggregate future amortization expense by fiscal year for the Company's intangible assets is as follows (in thousands):

Fiscal Year	Estimated Future Amortization Expense
2021	$	16,915
2022	14,814
2023	48
Total	$	31,777