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Goodwill and Intangible Assets
12 Months Ended
Dec. 31, 2013
Goodwill and Intangible Assets Disclosure [Abstract]  
Goodwill and Intangible Assets
Goodwill and Intangible Assets
The following table summarizes the changes in the carrying amount of goodwill through December 31, 2013:
 
Domestic Segment
 
International Segment
 
Consolidated Total
Carrying amount of goodwill, December 31, 2012
$
248,498

 
$
26,386

 
$
274,884

Currency translation adjustments

 
168

 
168

Fair value adjustments (See Note 3)

 
387

 
387

Carrying amount of goodwill, December 31, 2013
$
248,498

 
$
26,941

 
$
275,439


Intangible assets at December 31, 2013 and 2012 were as follows:
 
2013
 
2012
 
Customer
Relationships
 
Other
Intangibles
 
Customer
Relationships
 
Other
Intangibles
Gross intangible assets
$
51,544

 
$
3,933

 
$
51,603

 
$
2,848

Accumulated amortization
(14,281
)
 
(790
)
 
(11,717
)
 
(421
)
Net intangible assets
$
37,263

 
$
3,143

 
$
39,886

 
$
2,427

Weighted average useful life
13 years

 
6 years

 
13 years

 
6 years


Gross intangible assets increased $1.3 million in 2013 as a result of finalizing the Movianto purchase price allocation (see Note 3), partially offset by the write-off of a fully amortized intangible for $0.3 million. Amortization expense for intangible assets was $3.3 million for 2013, $2.5 million for 2012, and $3.1 million for 2011.
Based on the current carrying value of intangible assets subject to amortization, estimated amortization expense is $4.5 million for 2014, $5.0 million for 2015, $5.1 million for 2016, $5.0 million for 2017 and $4.2 million for 2018.