Asset Impairment (Tables)
|12 Months Ended|
Dec. 31, 2016
|Asset Impairment [Abstract]|
|Schedule Of Asset Impairment||
Asset impairment consisted of the following for the years ended December 31, 2016, 2015 and 2014:
Schedule of tangible and intangible asset impairment charges [Table Text Block]
No definition available.