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Goodwill and Other Intangible Assets
12 Months Ended
Dec. 31, 2019
Goodwill and Intangible Assets Disclosure [Abstract]  
Goodwill and Other Intangible Assets Goodwill and Other Intangible Assets

The changes in the net carrying amount of goodwill for the years ended December 31, are as follows:
 
 
2019
 
2018
Balance as of January 1,
$
400,440

 
$
401,954

 
 
 
 
Goodwill resulting from business combinations
217,482

 

 
 
 
 
Foreign currency translation
120

 
(1,514
)
 
 
 
 
Balance as of December 31,
$
618,042

 
$
400,440


During 2019, the Company acquired Buffalo Filter as further described in Note 2. Goodwill resulting from the acquisition amounted to $215.8 million and acquired intangible assets including customer and distributor relationships, developed technology and trademarks and tradenames amounted to $140.0 million. Total accumulated goodwill impairment losses aggregated
$107.0 million at December 31, 2019 and 2018, respectively. During 2019, the Company acquired a distributor as further described in Note 2 resulting in goodwill of $1.7 million and identifiable intangible assets of $4.1 million.

Other intangible assets consist of the following:
 
December 31, 2019
 
December 31, 2018
 
Weighted Average Amortization Period (Years)
Gross
Carrying
Amount
 
Accumulated
Amortization
 
Gross
Carrying
Amount
 
Accumulated
Amortization
Intangible assets with definite lives:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Customer and distributor relationships
24
$
342,568

 
$
(115,311
)
 
$
214,577

 
$
(97,131
)
 
 
 
 
 
 


 


Sales representation, marketing and promotional rights
25
149,376

 
(48,000
)
 
149,376

 
(42,000
)
 
 
 
 
 
 
 
 
 
Patents and other intangible assets
15
70,646

 
(46,456
)
 
61,473

 
(44,242
)
 
 
 
 
 
 


 


Developed technology
16
106,604

 
(13,171
)
 
91,965

 
(7,369
)
 
 
 
 
 
 
 
 
 
Intangible assets with indefinite lives:
 
 

 
 

 


 


 
 
 
 
 
 


 


Trademarks and tradenames
 
86,544

 

 
86,544

 

 
 
 
 
 
 
 
 
 
 
22
$
755,738

 
$
(222,938
)
 
$
603,935

 
$
(190,742
)


Amortization expense related to intangible assets which are subject to amortization totaled $32.3 million, $23.2 million and $21.3 million for the years ending December 31, 2019, 2018 and 2017, respectively, and is included as a reduction of revenue (for amortization related to our sales representation, marketing and promotional rights) and in selling and administrative expense (for all other intangible assets) in the consolidated statements of comprehensive income. Included in developed technology is $6.5 million and $21.3 million of earn-out consideration that was paid during 2019 and 2018, respectively, and an additional accrual of $7.5 million that is considered probable as of December 31, 2019 associated with a prior asset acquisition. The accrual is recorded in other current liabilities at December 31, 2019.
    
The estimated amortization expense related to intangible assets at December 31, 2019 and for each of the five succeeding years is as follows:

 
Amortization included in expense
 
Amortization recorded as a reduction of revenue
 
Total
2020
$
28,059

 
$
6,000

 
$
34,059

2021
27,268

 
6,000

 
33,268

2022
26,122

 
6,000

 
32,122

2023
25,329

 
6,000

 
31,329

2024
24,526

 
6,000

 
30,526