Goodwill and Intangible Assets

3 Months Ended

Mar. 31, 2021

Goodwill

The following table sets forth the changes in the carrying amount of goodwill for the Company for three months ended March 31, 2021 (in thousands):


	Marketing Services		SaaS		Thryv International		Total
Balance as of December 31, 2020	$	390,573	$	218,884	$	—	$	609,457
Sensis acquisition	—		—		71,722		71,722
Effects of foreign currency translation	—		—		(1,620)		(1,620)
Balance as of March 31, 2021	$	390,573	$	218,884	$	70,102	$	679,559

Intangible Assets

The following tables set forth the details of the Company's intangible assets as of March 31, 2021 and December 31, 2020 (in thousands):


	As of March 31, 2021
	Gross		Accumulated Amortization		Effects of Foreign Currency Translation		Net		Weighted Average Remaining Amortization Period in Years
Client relationships	$	803,641	$	706,388	$	2,211	$	95,042	3.5
Trademarks and domain names	225,177		174,457		768		49,953		2.6
Patented technologies	19,600		19,600		—		—		0.0
Covenants not to compete	1,521		869		—		652		1.7
Total intangible assets	$	1,049,939	$	901,314	$	2,979	$	145,647	3.2


	As of 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		—		0.0
Covenants not to compete	1,497		759		738		1.8
Total intangible assets	$	923,199	$	891,422	$	31,777	2.0

Amortization expense for the three months ended March 31, 2021, and 2020 was approximately $9.9 million and $28.9 million, respectively.

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	$	63,648
2022	51,014
2023	21,979
2024	9,006
Total	$	145,647