Goodwill and intangible assets, net

12 Months Ended

Dec. 31, 2023

Goodwill and Intangible Assets Disclosure [Abstract]

Goodwill was unchanged for the year ended December 31, 2023 and increased by $60.0 million for the year ended December 31, 2022, due to our acquisition of The Yes.

Intangible assets, net consists of the following (in thousands):


	December 31, 2023
	Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount		Weighted-Average Useful Life(1)

Acquired technology, patents and other intangibles	$	39,907	$	(24,246)	$	15,661	4.9 years
Customer relationships	17,700		(16,126)		1,574		1.6 years
Total intangible assets, net	$	57,607	$	(40,372)	$	17,235


	December 31, 2022
	Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount		Weighted-Average Useful Life(1)

Acquired technology, patents and other intangibles	$	39,907	$	(17,427)	$	22,480	4.9 years
Customer relationships	17,700		(15,585)		2,115		1.6 years
Total intangible assets, net	$	57,607	$	(33,012)	$	24,595

(1)Based on the weighted-average useful life established as of acquisition date.

Amortization expense was $7.4 million, $24.9 million, and $1.3 million for the years ended December 31, 2023, 2022 and 2021, respectively.

During the fourth quarter of 2022, we evaluated the acquired intangible assets from The Yes for impairment due to the departure of certain key employees. We concluded that the fair values of the customer relationships and developed technology were impaired and recorded impairment charges of $6.3 million and $3.1 million to sales and marketing and cost of revenue, respectively.

Estimated future amortization expense as of December 31, 2023, is as follows (in thousands):


	Intangible Asset Amortization
2024	$	7,359
2025	5,464
2026	3,424
2027	476
2028	434
Thereafter	78
Total	$	17,235