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Supplemental Disclosures of Cash Flow Information
12 Months Ended
Dec. 31, 2014
Supplemental Cash Flow Elements [Abstract]  
Cash Flow, Supplemental Disclosures [Text Block]
   

2014

   

2013

   

2012

 

Cash paid during the period

                       
                         

Interest paid

  $ 5,793     $ 5,537     $ 7,295  

Income taxes paid

  $ 4,658     $ 7,556     $ 6,940