Intangible assets other than goodwill (Tables)
|3 Months Ended|
Mar. 31, 2017
|Goodwill and Intangible Assets Disclosure [Abstract]|
|Schedule of Finite-Lived Intangible Assets [Table Text Block]||
As of December 31, 2016 and March 31, 2017 the Company has the following amounts related to intangible assets:
Tabular disclosure of assets, excluding financial assets and goodwill, lacking physical substance with a finite life, by either major class or business segment.
Reference 1: http://www.xbrl.org/2003/role/presentationRef