|6 Months Ended|
Jun. 30, 2017
|Goodwill and Intangible Assets Disclosure [Abstract]|
|Carrying amount of Goodwill||
The carrying amount of goodwill and the changes in the balance are as follows (in thousands):
Tabular disclosure of goodwill by reportable segment and in total which includes a rollforward schedule.
Reference 1: http://www.xbrl.org/2003/role/presentationRef