|3 Months Ended|
Mar. 31, 2018
|Goodwill and Intangible Assets Disclosure [Abstract]|
The changes in the carrying amount of goodwill for the three months ended March 31, 2018 is summarized as follows:
No definition available.
The entire disclosure for goodwill.
Reference 1: http://www.xbrl.org/2003/role/presentationRef