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Goodwill (Tables)
12 Months Ended
Dec. 31, 2015
Goodwill and Intangible Assets Disclosure [Abstract]  
Schedule of Goodwill
The following table presents the changes in the carrying amount of goodwill:
 
(in thousands)
Balance as of December 31, 2014
$

Goodwill acquired
19,443

Balance as of December 31, 2015
$
19,443