|12 Months Ended|
Dec. 31, 2016
|Business Combination, Goodwill [Abstract]|
|Schedule of Goodwill [Table Text Block]||
Goodwill activity for each period was as follows:
Tabular disclosure of goodwill by reportable segment and in total which includes a rollforward schedule.
Reference 1: http://www.xbrl.org/2003/role/presentationRef