Oil and Gas Properties

6 Months Ended

Jun. 30, 2011

Oil and Gas Properties

Oil and Gas Properties

10. Oil and Gas Properties

The following sets forth the net capitalized costs for oil and gas properties as of June 30, 2011 and December 31, 2010.

	June 30,			December 31,
	2011			2010
	(In thousands)
Proved properties	$	1,800,348		$	1,655,217
Unproved properties	72,874			52,035
Total capitalized costs	1,873,222			1,707,252
Accumulated depreciation, depletion and amortization	(1,035,300		)	(983,119		)
Net capitalized costs	$	837,922		$	724,133