Acquisitions and Divestitures (Tables)

12 Months Ended

Dec. 31, 2017

Acquisitions and Divestitures [Abstract]

Schedule of Recognized Identified Assets Acquired and Liabilities Assumed [Table Text Block]

We accounted for the Devon Acquisition by applying the acquisition method of accounting as of the Date of Acquisition. The following table represents the preliminary fair values assigned to the net assets acquired as of the Date of Acquisition and the consideration transferred:

Assets
Oil and gas properties - proved	$	42,891
Oil and gas properties - unproved	146,686
Other property and equipment	8,642
Liabilities
Asset retirement obligations	494
Net assets acquired	$	197,725
Cash consideration paid	$	190,599
Amount transferred to Devon from the Escrow Account on the Date of Acquisition	7,049
Amount due to Devon from the Escrow Account in February 2018	2,506
Application of working capital adjustments, net	(2,429		)
Total consideration	$	197,725

Business Acquisition, Pro Forma Information [Table Text Block]

The following table presents unaudited summary pro forma financial information for the year ended December, 31, 2017 assuming the Devon Acquisition and the related entry into the Second Lien Facility occurred as of January 1, 2017. The pro forma financial information does not purport to represent what our actual results of operations would have been if the Devon Acquisition and the entry into the Second Lien Facility had occurred as of this date, or the results of operations for any future periods. We have excluded any pro forma presentations for the Successor and Predecessor periods in 2016 as the determination of such pro forma adjustments are not practical due primarily to our reorganization and adoption of Fresh Start Accounting and the full cost method on the Emergence Date. In light of these circumstances, we also believe that such a pro forma presentation for 2016 would not be comparable and could potentially be misleading.

Total revenues	$	184,831
Net income attributable to common shareholders	$	23,360
Net income per share - basic	$	1.56
Net income per share - diluted	$	1.55