Property and Equipment

12 Months Ended

Dec. 31, 2014

Property, Plant and Equipment [Abstract]

The following table summarizes our property and equipment as of the dates presented:



	As of December 31,
	2014			2013
Oil and gas properties:
Proved	$	3,506,603		$	2,970,047
Unproved	125,676			101,520
Total oil and gas properties	3,632,279			3,071,567
Other property and equipment	75,073			105,421
Total property and equipment	3,707,352			3,176,988
Accumulated depreciation, depletion and amortization	(1,882,254		)	(939,684		)
	$	1,825,098		$	2,237,304

The following table describes the changes in capitalized exploratory drilling costs that are pending the determination of proved reserves for the periods presented:



	2014			2013					2012
	Number of Wells	Cost		Number of Wells		Cost			Number of Wells	Cost
Balance at beginning of year	—	$	—	1		$	4,435		—	$	—
Additions pending determination of proved reserves	—	—		—		—			1	4,435
Reclassification to wells, equipment and facilities based on the determination of proved reserves	—	—		(1	)	(4,435		)	—	—
Charged to exploration expense	—	—		—		—			—	—
Balance at end of year	—	$	—	—		$	—		1	$	4,435

- Definition

The entire disclosure for long-lived, physical assets used in the normal conduct of business and not intended for resale. Includes, but is not limited to, accounting policies and methodology, roll forwards, depreciation, depletion and amortization expense, including composite depreciation, accumulated depreciation, depletion and amortization expense, useful lives and method used, income statement disclosures, assets held for sale and public utility disclosures.

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