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Intangible assets and goodwill (Tables)
3 Months Ended
Mar. 31, 2019
Intangible assets and goodwill  
Schedule of intangible assets, net

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

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Balance at March 31, 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

 

$

61,020

 

$

209,980

 

$

271,000

 

$

55,636

 

$

215,364

 

Schedule of estimated aggregate amortization expense

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

$

16,155

 

$

21,536

 

$

21,536

 

$

21,536

 

$

21,536

 

$

107,681