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Property, Plant and Equipment (Tables)

3 Months Ended

Mar. 31, 2015

Property, Plant and Equipment [Abstract]

Schedule of Property, Plant and Equipment

The following table sets forth the Company’s property, plant and equipment:



	March 31, 2015				December 31, 2014
	(In thousands)
Proved oil and gas properties⁽¹⁾	$	5,467,976			$	5,156,875
Less: Accumulated depreciation, depletion, amortization and impairment	(1,157,925		)		(1,043,121		)
Proved oil and gas properties, net	4,310,051				4,113,754
Unproved oil and gas properties	719,662				809,265
Total oil and gas properties, net	5,029,713				4,923,019
Other property and equipment	356,940				313,439
Less: Accumulated depreciation	(57,291		)		(49,672		)
Other property and equipment, net	299,649				263,767
Total property, plant and equipment, net	$	5,329,362			$	5,186,786

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(1)	Included in the Company’s proved oil and gas properties are estimates of future asset retirement costs of $37.5 million and $36.9 million at March 31, 2015 and December 31, 2014, respectively.