PROPERTIES AND EQUIPMENT

6 Months Ended

Jun. 30, 2011

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.

	June 30, 2011			December 31, 2010
	(in thousands)
Properties and equipment, net:
Natural gas and crude oil properties
Proved	$	1,599,926		$	1,429,667
Unproved	72,663			79,053
Total natural gas and crude oil properties	1,672,589			1,508,720
Pipelines and related facilities	34,110			34,262
Transportation and other equipment	33,209			32,410
Land, buildings and leasehold improvements	14,514			13,379
Construction in progress	63,351			42,128
	1,817,773			1,630,899
Accumulated DD&A	(573,360		)	(510,861		)
Properties and equipment, net	$	1,244,413		$	1,120,038