In January 2022, we completed an acquisition of a privately-held technology company in the United States for a total consideration of $47.0 million with both cash and common stock. The purchase price included $19.0 million of intangible assets, $28.5 million of goodwill and $0.5 million of net liabilities assumed.

The changes in the carrying values of goodwill for the three months ended March 31, 2022 are as follows (in thousands):


	Amount
Balance at December 31, 2021	$	188,397
Additions related to one acquisition	28,518
Balance at March 31, 2022	$	216,915

The following table presents details of our acquisition-related intangible assets as of March 31, 2022 and December 31, 2021 (in thousands, except for years):


	March 31, 2022
	Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount		Weighted Average Remaining Useful Life (In Years)
Developed technology	$	135,530	$	(59,384)	$	76,146	4.7
Customer relationships	32,920		(8,966)		23,954		5.5
Trade name	10,190		(5,046)		5,144		3.4
Others	5,720		(5,720)		—		0.0
Total	$	184,360	$	(79,116)	$	105,244	4.8


	December 31, 2021
	Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount		Weighted Average Remaining Useful Life (In Years)
Developed technology	$	124,730	$	(53,663)	$	71,067	4.5
Customer relationships	25,920		(7,899)		18,021		5.2
Trade name	8,990		(4,693)		4,297		3.8
Others	5,720		(5,550)		170		0.1
Total	$	165,360	$	(71,805)	$	93,555	4.6

For intangible assets acquired and purchased during the three months ended March 31, 2022, developed technology has a weighted-average useful life of 7.0 years, customer relationships has a weighted-average useful life of 7.0 years, and trade name has a weighted-average useful life of 3.0 years.

Amortization expense related to acquisition-related intangible assets was $7.3 million, and $7.4 million for the three months ended March 31, 2022, and 2021, respectively.

As of March 31, 2022, future estimated amortization expense related to the acquired-related intangible assets is as follows (in thousands):


	Future Amortization Expense
Remainder of 2022	$	22,161
2023	25,724
2024	19,046
2025	12,326
2026	10,280
Thereafter	15,707
Total	$	105,244