The changes in the carrying amount of goodwill for the twelve months ended December 31, 2014, 2015, and 2016 are as follows:
(in thousands)
 

Balance at December 31, 2013
$
32,073

Translation adjustment
(2,217
)
Goodwill acquired
45,835

Balance at December 31, 2014
$
75,691

Translation adjustment
(3,181
)
Goodwill acquired
$
2,999

Balance at December 31, 2015
$
75,509

Translation adjustment
(684
)
Balance at December 31, 2016
$
74,825