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Goodwill and Intangible Assets
9 Months Ended
Sep. 30, 2017
Goodwill and Intangible Assets Disclosure [Abstract]  
Goodwill and Intangible Assets
7.
Goodwill and Intangible Assets
The changes in the carrying value of goodwill for the nine months ended September 30, 2017 were as follows:
 
Goodwill
 
Accumulated
Impairment
Losses
 
Total
Balance as of December 31, 2016
$
58,397

 
$
(37,332
)
 
$
21,065

Additions
143,642

 

 
143,642

Purchase accounting adjustments
(1,865
)
 

 
(1,865
)
Foreign currency fluctuations
19,632

 
(3,426
)
 
16,206

Balance as of September 30, 2017
$
219,806

 
$
(40,758
)
 
$
179,048


The balances of acquired intangible assets, excluding goodwill, as of September 30, 2017 and December 31, 2016, were as follows:
 
Customer Lists
 
Trade Names
 
Technology
 
Total
Balance as of September 30, 2017
 
 
 
 
 
 
 
Original cost
$
147,582

 
$
31,515

 
$
14,425

 
$
193,522

Accumulated amortization
(13,492
)
 
(1,631
)
 
(2,647
)
 
(17,770
)
Carrying value
$
134,090

 
$
29,884

 
$
11,778

 
$
175,752

Weighted average original life (in years)
15

 
10

 
11

 
 

 
 
 
 
 
 
 
 
Balance as of December 31, 2016
 

 
 
 
 

 
 

Original cost
$
8,016

 
$
2,000

 
$
5,136

 
$
15,152

Accumulated amortization
(5,948
)
 

 
(2,744
)
 
(8,692
)
Carrying value
$
2,068

 
$
2,000

 
$
2,392

 
$
6,460

Weighted average original life (in years)
15

 
15

 
13

 
 


The additions to goodwill during the first nine months of 2017 were based on the preliminary purchase price allocation of our acquisition of the IPC Group, as described further in Note 5.
As part of our acquisition of the IPC Group, we acquired customer lists, trade names and technology for a preliminary fair value measurement of $159,445. Further details regarding the preliminary purchase price allocation of our acquisition of the IPC Group are described further in Note 5.
As part of the formation of the i-team North America B.V. joint venture, we purchased the distribution rights to sell the i-mop in North America for $2,500. The distribution rights were recorded in intangible assets, net as a customer list on the Condensed Consolidated Balance Sheets as of September 30, 2017. The i-mop distribution rights have a useful life of five years. Further details regarding the joint venture are discussed in Note 3.
Amortization expense on intangible assets for the three and nine months ended September 30, 2017 was $7,650 and $11,430, respectively. Amortization expense on intangible assets for the three and nine months ended September 30, 2016 was $99 and $323, respectively.
Estimated aggregate amortization expense based on the current carrying value of amortizable intangible assets for each of the five succeeding years and thereafter is as follows:
Remaining 2017
$
5,635

2018
22,042

2019
21,398

2020
19,928

2021
18,315

Thereafter
88,434

Total
$
175,752