Divestiture	9 Months Ended
Sep. 30, 2016
Discontinued Operations and Disposal Groups [Abstract]
Divestiture	Divestiture On April 1, 2016, the Company completed the sale of certain legacy wells that have been producing from conventional reservoirs such as the Madison, Red River and other formations in the Williston Basin other than the Bakken or Three Forks formations for cash proceeds of $12.3 million, which includes customary post close adjustments, and a $4.0 million 10% secured promissory note due within one year. These sold assets primarily consisted of oil and gas properties in the Company’s exploration and production segment and included certain other property and equipment in the Company’s midstream segment. For the three and nine months ended September 30, 2016, customary post close adjustments were included in the loss on sale of properties on the Company’s Condensed Consolidated Statement of Operations. For the nine months ended September 30, 2016 and the year ended December 31, 2015, the Company recorded impairment charges of $3.6 million and $9.4 million, respectively, which were included in impairment on the Company’s Condensed Consolidated Statement of Operations, to adjust the carrying value of these assets to their estimated fair value, determined based on the expected sales price, less costs to sell. There were no similar charges recorded during the three months ended September 30, 2016 and three and nine months ended September 30, 2015.

Divestiture

9 Months Ended

Sep. 30, 2016

Discontinued Operations and Disposal Groups [Abstract]

On April 1, 2016, the Company completed the sale of certain legacy wells that have been producing from conventional reservoirs such as the Madison, Red River and other formations in the Williston Basin other than the Bakken or Three Forks formations for cash proceeds of $12.3 million, which includes customary post close adjustments, and a $4.0 million 10% secured promissory note due within one year. These sold assets primarily consisted of oil and gas properties in the Company’s exploration and production segment and included certain other property and equipment in the Company’s midstream segment. For the three and nine months ended September 30, 2016, customary post close adjustments were included in the loss on sale of properties on the Company’s Condensed Consolidated Statement of Operations.

For the nine months ended September 30, 2016 and the year ended December 31, 2015, the Company recorded impairment charges of $3.6 million and $9.4 million, respectively, which were included in impairment on the Company’s Condensed Consolidated Statement of Operations, to adjust the carrying value of these assets to their estimated fair value, determined based on the expected sales price, less costs to sell. There were no similar charges recorded during the three months ended September 30, 2016 and three and nine months ended September 30, 2015.