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Goodwill and Intangible Assets (Tables)
12 Months Ended
Dec. 31, 2020
Goodwill and Intangible Assets  
Schedule of changes in goodwill

    

Gross carrying

    

Accumulated

    

amount

impairment

Net amount

    

(in thousands)

Balance at December 31, 2018

$

430,331

$

246,029

$

184,302

Allocated to Assets held for sale

2,359

(2,359)

Balance at December 31, 2019 and 2020

430,331

248,388

181,943

Schedule of intangible assets excluding goodwill

December 31, 2020

December 31, 2019

Average

Accumulated

Accumulated

    

Remaining

    

Gross

    

Amortization

    

    

Gross

    

Amortization

    

Amortization

Carrying

and

Net

Carrying

and

Net

Period

Amount

Impairment

Amount

Amount

Impairment

Amount

(in years)

(in thousands)

Technology

4.6

$

327,908

$

302,358

$

25,550

$

327,908

$

291,766

$

36,142

Customer relationships

8.2

146,465

130,131

16,334

146,465

126,764

19,701

Trademarks and tradenames

3.5

30,910

26,614

4,296

30,910

25,256

5,654

Other

0.8

 

3,686

 

3,681

 

5

 

3,686

 

3,665

 

21

Total

5.8

$

508,969

$

462,784

$

46,185

$

508,969

$

447,451

$

61,518

Schedule of estimated annual amortization expense, excluding in-process R&D for intangible assets with definite useful lives

Amortization

    

(in thousands)

2021

$

12,280

2022

 

10,018

2023

 

8,347

2024

 

6,708

2025

 

3,136

Thereafter

5,696

Total

$

46,185