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Goodwill and Other Intangibles
12 Months Ended
Dec. 31, 2016
Goodwill and Intangible Assets Disclosure [Abstract]  
Goodwill and Other Intangibles
GOODWILL AND OTHER INTANGIBLES
At least annually on October 1st, and more frequently if warranted, the Company assesses it goodwill and indefinite lived intangible assets for impairment. No impairment losses were recorded for goodwill or indefinite lived intangible assets during the years ended December 31, 2016, 2015 and 2014. However, there can be no assurance that goodwill and indefinite lived intangibles will not be impaired at any time in the future.
Changes in the carrying amount of goodwill for the years ended December 31, 2016 and 2015 are as follows (in thousands): 
 
 
December 31,
 
 
2016
 
2015
Balance at beginning of year
 
$
179,792

 
$
193,722

Translation adjustments
 
2,220

 
(13,930
)
Balance at end of year
 
$
182,012

 
$
179,792


The following is a summary of the Company’s intangible assets other than goodwill (in thousands): 
 
 
 
 
December 31,
 
 
Amortization Period
 
2016
 
2015
Amortized intangible assets:
 
 
 
 
 
 
Cost:
 
 
 
 
 
 
Customer relationships
 
10 years
 
$
41,419

 
$
41,142

Internally developed software
 
7 years
 
6,925

 
6,718

 
 
 
 
48,344

 
47,860

Accumulated amortization:
 
 
 
 
 
 
Customer relationships
 
 
 
(40,901
)
 
(36,514
)
Internally developed software
 
 
 
(6,925
)
 
(6,718
)
 
 
 
 
(47,826
)
 
(43,232
)
Net book value
 
 
 
518

 
4,628

Indefinite-lived intangible assets:
 
 
 
 
 
 
Trade names
 
 
 
900

 
900

Total intangible assets at net book value
 
 
 
$
1,418

 
$
5,528



The Company’s trade name assets were determined to have indefinite lives due to the length of time the trade names have been in place. The Company’s current intentions are to maintain the trade names indefinitely. All other intangible assets are amortized on a straight-line basis over their expected useful lives. As of December 31, 2016, customer relationships, which have an amortization period of 10 years, were the only intangible assets remaining to be amortized.
Amortization expense for the Company’s intangible assets was $4.2 million during each of the years ended December 31, 2016 and 2015 and $4.5 million during the year ended December 31, 2014. Estimated future amortization expense of $0.5 million will occur in fiscal year 2017.
The Company evaluates the remaining useful life of these intangible assets on an annual basis. The Company also reviews the assets for recoverability when events or changes in circumstances indicate the carrying values may not be recoverable.