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Intangible Assets
3 Months Ended
Mar. 31, 2016
Goodwill and Intangible Assets Disclosure [Abstract]  
Intangible Assets
Intangible Assets

Goodwill
 
Changes in the carrying amount of goodwill by reportable business segment for the three months ended March 31, 2016 were as follows (in thousands):
 
Learning
Solutions
 
Professional
& Technical
Services
 
Sandy
 
Performance
Readiness
Solutions
 
Total
Balance as of December 31, 2015
$
49,822

 
$
43,702

 
$
653

 
$
27,798

 
$
121,975

Acquisitions
1,750

 

 

 

 
1,750

Foreign currency translation
587

 
(215
)
 

 
(41
)
 
331

Balance as of March 31, 2016
$
52,159


$
43,487


$
653


$
27,757


$
124,056


 
Intangible Assets Subject to Amortization
 
Intangible assets with finite lives are subject to amortization over their estimated useful lives. The primary assets included in this category and their respective balances were as follows (in thousands):
March 31, 2016
 
 
 
 
 
 
Gross Carrying Amount
 
Accumulated Amortization
 
Net Carrying Amount
 
 
 
Customer relationships
$
19,401

 
$
(13,202
)
 
$
6,199

Intellectual property and other
1,538

 
(927
)
 
611

 
$
20,939


$
(14,129
)

$
6,810

 
 
 
 
 
 
December 31, 2015
 

 
 

 
 

Customer relationships
$
19,351

 
$
(13,822
)
 
$
5,529

Intellectual property and other
1,772

 
(1,080
)
 
692

 
$
21,123


$
(14,902
)

$
6,221