Suspended Well Costs (Notes)

9 Months Ended

Sep. 30, 2015

Suspended Well Costs [Abstract]

Suspended Well Costs Disclosure [Text Block]

Note 12 - Suspended Well Costs

For the nine months ended September 30, 2015, the Company charged $21.1 million of exploratory well costs to exploration expense related to two unsuccessful exploratory wells that were capitalized as of December 31, 2014. None of the costs were capitalized for a period greater than one year as of December 31, 2014, or at the time the wells were determined to be unsuccessful.