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Goodwill and Intangible Assets
12 Months Ended
Dec. 31, 2016
Goodwill and Intangible Assets Disclosure [Abstract]  
Goodwill and Intangible Assets
Goodwill and Intangible Assets
Our intangible assets as of December 31 were comprised of the following (in thousands):
 
December 31, 2016
 
Weighted-
Average
Amortization
Period
 
Gross
Carrying
Amount
 
Accumulated
Amortization
 
Net
Carrying
Amount
Definite-lived intangible assets:
 
 
 
 
 
 
 
Trademarks/Tradenames
23 years
 
$
8,378

 
$
(3,193
)
 
$
5,185

Customer relationships
15 years
 
14,181

 
(3,855
)
 
10,326

 
 
 
$
22,559

 
$
(7,048
)
 
$
15,511

 
December 31, 2015
 
Weighted-
Average
Amortization
Period
 
Gross
Carrying
Amount
 
Accumulated
Amortization
 
Net
Carrying
Amount
Definite-lived intangible assets:
 
 
 
 
 
 
 
Trademarks/Tradenames
23 years
 
$
9,460

 
$
(3,914
)
 
$
5,546

Customer relationships
15 years
 
14,344

 
(2,944
)
 
11,400

 
 
 
$
23,804

 
$
(6,858
)
 
$
16,946


The aggregate intangible asset amortization expense was $1.3 million, $1.3 million and $1.5 million for the fiscal years ended December 31, 2016, 2015 and 2014, respectively. The estimated intangible asset amortization expense for each of the five succeeding fiscal years ending after December 31, 2016 is $1.3 million per year through December 31, 2019 and $1.2 million in the fourth and fifth years.
The changes in the carrying amounts of goodwill for the years ended December 31 are as follows (in thousands):
 
2016
 
2015
Balance — Beginning of the year
$
7,834

 
$
8,056

Currency translation adjustment
(131
)
 
(222
)
Balance — End of the year
$
7,703

 
$
7,834