Acquisition and Disposition of Properties (Tables)

3 Months Ended

Mar. 31, 2016

Business Combinations [Abstract]

Schedule of Assets and Liabilities Held-for-sale

The following table details held for sale properties by major classes of assets and liabilities. These property sales do not qualify for discontinued operations:

(in thousands)							March 31, 2016
	Permian Basin			San Juan Basin			Total
Oil and natural gas properties	$	260,253		$	311,282		$	571,535
Less accumulated depreciation, depletion and amortization	(166,254		)	(222,047		)	(388,301		)
Total assets held for sale	93,999			89,235			183,234
Other long-term liabilities	(1,086		)	(13,016		)	(14,102		)
Total liabilities held for sale	(1,086		)	(13,016		)	(14,102		)
Total net assets held for sale	$	92,913		$	76,219		$	169,132

(in thousands)	December 31, 2015
	San Juan Basin
Inventories	$	3,651
Oil and natural gas properties	305,386
Less accumulated depreciation, depletion and amortization	(219,059		)
Other property and equipment, net	3,761
Total assets held for sale	93,739
Other long-term liabilities	(12,789		)
Total liabilities held for sale	(12,789		)
Total net assets held for sale	$	80,950