XML 35 R17.htm IDEA: XBRL DOCUMENT v3.19.3
Intangible assets and goodwill
9 Months Ended
Sep. 30, 2019
Intangible assets and goodwill  
Intangible assets and goodwill

8.    Intangible assets and goodwill

Intangible Assets, Net

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

Balance at September 30, 2019

Balance at December 31, 2018

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

$

71,788

$

199,212

$

271,000

$

55,636

$

215,364

Estimated aggregate amortization expense based on the current carrying value of amortizable intangible assets is as follows (in thousands):

Remainder of

2019

2020

2021

2022

2023

Thereafter

Amortization expense

$

5,387

$

21,536

$

21,536

$

21,536

$

21,536

$

107,681

Goodwill

There were no changes to the carrying amount of goodwill for the nine months ended September 30, 2019.