Divestitures, Assets Held for Sale, and Acquisitions (Tables)

3 Months Ended

Mar. 31, 2017

Non-Operated Eagle Ford Divestiture 2017 [Member]

Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]

Disposal Groups, Including Discontinued Operations [Table Text Block]

The following table presents income (loss) before income taxes of the outside-operated Eagle Ford shale assets sold for the three months ended March 31, 2017, and 2016. This divestiture is considered a disposal of a significant asset group.

	For the Three Months Ended March 31,
	2017		2016
	(in thousands)
Income (loss) before income taxes (1)	$	24,324	$	(286,399	)

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⁽¹⁾  Income (loss) before income taxes reflects oil, gas, and NGL production revenue, less oil, gas, and NGL production expense and depletion, depreciation, amortization, and asset retirement obligation liability accretion. Additionally, income (loss) before income taxes included impairment of proved properties expense of approximately $269.6 million for the three months ended March 31, 2016.

Divide County Divestiture 2017 [Member]

Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]

Disposal Groups, Including Discontinued Operations [Table Text Block]

The following table presents loss before income taxes of the Company’s Divide County assets held for sale for the three months ended March 31, 2017, and 2016:

	For the Three Months Ended March 31,
	2017			2016
	(in thousands)
Loss before income taxes (1)	$	(335,561	)	$	(16,813	)

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⁽¹⁾   Loss before income taxes reflects oil, gas, and NGL production revenue less oil, gas, and NGL production expense and depletion, depreciation, amortization, and asset retirement obligation liability accretion. Additionally, loss before income taxes for the three months ended March 31, 2017, included the $359.6 million write-down on these assets held for sale as discussed above, and loss before income taxes for the three months ended March 31, 2016, included $1.6 million of unproved property impairments.