Goodwill and Intangible Assets

3 Months Ended

Mar. 31, 2021

Goodwill And Intangible Assets Disclosure [Abstract]

Goodwill and Intangible Assets

6. Goodwill and Intangible Assets

There have been no changes in the carrying amount of goodwill since its recognition in 2015.

Intangible assets subject to amortization as of March 31, 2021 and December 31, 2020 consisted of the following (in thousands):

	March 31, 2021
	Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount
Acquired developed technology	$	20,000	$	(10,382	)	$	9,618
Purchased intellectual property		325		(137	)		188
Balance at March 31, 2021	$	20,325	$	(10,519	)	$	9,806

	December 31, 2020
	Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount
Acquired developed technology	$	20,000	$	(9,972	)	$	10,028
Purchased intellectual property		325		(128	)		197
Balance at December 31, 2020	$	20,325	$	(10,100	)	$	10,225

The developed technology was acquired in connection with our acquisition of Sequenta, Inc. in 2015. The remaining balance of the acquired technology and the purchased intellectual property is expected to be amortized over the next 5.8 years.

As of March 31, 2021, expected future amortization expense for intangible assets was as follows (in thousands):

2021 (excluding the three months ended March 31, 2021)	$	1,280
2022		1,699
2023		1,699
2024		1,703
2025		1,699
Thereafter		1,726
Total future amortization expense	$	9,806