The following table displays a rollforward of the carrying amount of goodwill from January 1, 2015 to
December 31, 2016
(in thousands):
Balance as of January 1, 2015
$
88,959
Additions
56,992
Disposals
(577
)
Balance as of December 31, 2015
145,374
Disposals
(17,854
)
Impairment
(3,636
)
Balance as of December 31, 2016
$
123,884