Intangible Assets and Goodwill (Tables)

12 Months Ended

Dec. 31, 2020

Intangible Assets and Goodwill

Schedule of finite-lived intangible assets, net

The components of intangible assets were as follows (in thousands, except for useful life):

Balance at December 31, 2020

Balance at December 31, 2019

Weighted-

Gross

Net

Gross

Net

Average Useful

Carrying

Accumulated

Carrying

Carrying

Accumulated

Carrying

Lives (Years)

Amount

Amortization

Amount

Amount

Amortization

Amount

Finite-lived intangible assets:

Licensed IP

12.5

$

271,000

$

98,709

$

172,291

$

271,000

$

77,172

$

193,828

Schedule of estimated aggregate amortization expense

Estimated aggregate amortization expense based on the current carrying value of amortizable intangible assets will be as follows for the years ending December 31 (in thousands):

		2021		2022		2023		2024		2025		Thereafter
Amortization expense	$	21,536	$	21,536	$	21,536	$	21,536	$	21,536	$	64,611