|12 Months Ended|
Dec. 31, 2018
|Goodwill and Intangible Assets Disclosure [Abstract]|
|Schedule of Goodwill [Table Text Block]||
The changes in the carrying amount of goodwill for the year ended December 31, 2018 consisted of the following:
Tabular disclosure of goodwill by reportable segment and in total which includes a rollforward schedule.
Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef