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Intangible Assets (Tables)
 6 Months Ended
Jun. 30, 2018
Goodwill and Intangible Assets Disclosure [Abstract]  
Schedule of Goodwill
Changes in the carrying amount of goodwill by reportable business segment for the six months ended June 30, 2018 were as follows (in thousands):
 
Workforce Excellence
 
Business Transformation Services
 
Total
Balance as of December 31, 2017
$
96,330

 
$
48,505

 
$
144,835

Acquisitions
21,494

 
8,527

 
30,021

Foreign currency translation
(1,503
)
 
(378
)
 
(1,881
)
Balance as of June 30, 2018
$
116,321


$
56,654


$
172,975
Schedule of Finite-Lived Intangible Assets
The primary assets included in this category and their respective balances were as follows (in thousands):
 
Gross Carrying Amount
 
Accumulated Amortization
 
Net Carrying Amount
June 30, 2018
 
 
Customer relationships
$
22,491

 
$
(7,551
)
 
$
14,940

Intellectual property and other
4,638

 
(1,656
)
 
2,982

 
$
27,129


$
(9,207
)

$
17,922

 
 
 
 
 
 
December 31, 2017
 

 
 

 
 

Customer relationships
$
16,330

 
$
(11,140
)
 
$
5,190

Intellectual property and other
4,298

 
(1,125
)
 
3,173

 
$
20,628


$
(12,265
)

$
8,363