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Asset Retirement Obligations (Tables)
6 Months Ended
Jun. 30, 2014
Schedule of Change in Asset Retirement Obligation [Table Text Block]
  Balance at December 31, 2013 $ 1,241,481  
  Liabilities incurred   531,116  
  Accretion expense   44,310  
  Balance at June 30, 2014 $ 1,816,907