Suspended Well Costs (Notes)

6 Months Ended

Jun. 30, 2015

Suspended Well Costs [Abstract]

Suspended Well Costs Disclosure [Text Block]

Note 12 - Suspended Well Costs

For the three and six months ended June 30, 2015, the Company charged to exploration expense $6.0 million and $21.1 million, respectively, of capitalized exploratory well costs as of December 31, 2014. These costs were related to two wells, for which 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.