Goodwill and Intangible Assets

6 Months Ended

Jun. 30, 2021

Goodwill and Intangible Assets Disclosure [Abstract]

Goodwill and Intangible Assets

Goodwill and Intangible Assets

Goodwill

The following table sets forth the changes in the carrying amount of goodwill for the Company for six months ended June 30, 2021 (in thousands):

	Marketing Services		SaaS		Thryv International		Total
Balance as of December 31, 2020	$	390,573	$	218,884	$	—	$	609,457
Sensis Acquisition	—		—		71,931		71,931
Effects of foreign currency translation	—		—		(2,595)		(2,595)
Balance as of June 30, 2021	$	390,573	$	218,884	$	69,336	$	678,793

Intangible Assets

The following tables set forth the details of the Company's intangible assets as of June 30, 2021 and December 31, 2020 (in thousands of $):

	As of June 30, 2021
	Gross		Accumulated Amortization		Effects of Foreign Currency Translation		Net		Weighted Average Remaining Amortization Period in Years
Client relationships	$	803,641	$	720,886	$	3,126	$	79,629	3.3
Trademarks and domain names	225,177		181,050		785		43,342		2.4
Patented technologies	19,600		19,600		—		—		0.0
Covenants not to compete	1,954		1,018		—		936		2.0
Total intangible assets	$	1,050,372	$	922,554	$	3,911	$	123,907	3.0

	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 intangible assets for the three and six months ended June 30, 2021 was $21.0 million and $30.9 million, respectively. Amortization expense for the and three and six months ended June 30, 2020 was $28.9 million and $57.8 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	$	42,200
2022	50,835
2023	21,926
2024	8,946
Total	$	123,907