PROPERTIES AND EQUIPMENT

3 Months Ended

Mar. 31, 2012

PROPERTIES AND EQUIPMENT [Abstract]

Capitalized Costs Relating to Oil and Gas Producing Activities Disclosure [Text Block]

PROPERTIES AND EQUIPMENT

The following table presents the components of properties and equipment, net of depreciation and assets held-for-sale.

	March 31, 2012			December 31, 2011
	(in thousands)
Properties and equipment, net:
Natural gas and crude oil properties
Proved	$	1,738,596		$	1,694,694
Unproved	132,499			102,466
Total natural gas and crude oil properties	1,871,095			1,797,160
Pipelines and related facilities	42,062			40,721
Transportation and other equipment	32,878			32,475
Land and buildings	13,872			14,572
Construction in progress	61,584			69,633
Gross properties and equipment	2,021,491			1,954,561
Accumulated DD&A	(692,031		)	(652,845		)
Properties and equipment, net	$	1,329,460		$	1,301,716