Selected Quarterly Financial Data (Tables)

12 Months Ended

Dec. 31, 2012

Quarterly Financial Information Disclosure [Abstract]

Schedule Of Quarterly Financial Information

The following table presents selected quarterly financial data for the years ended December 31, 2012 and 2011:

2012	First		Second		Third			Fourth
	(In thousands, except per share amounts)
Oil and gas revenues	$	80,715	$	83,818	$	96,197		$	107,450
Operating income	22,379		14,808		24,315			37,151
Net income (loss) from continuing operations	$	10,676	$	25,900	$	(1,860	)	$	16,461
Net income (loss)	$	9,423	$	28,504	$	(930	)	$	18,490
Net income (loss) per share - basic
Net income (loss) from continuing operations	$	0.27	$	0.65	$	(0.05	)	$	0.41
Net income (loss) per share	$	0.24	$	0.72	$	(0.02	)	$	0.47
Net income (loss) per share - diluted
Net income (loss) from continuing operations	$	0.27	$	0.65	$	(0.05	)	$	0.41
Net income (loss) per share	$	0.24	$	0.71	$	(0.02	)	$	0.46

2011	First		Second		Third		Fourth
	(In thousands, except per share amounts)
Oil and gas revenues	$	44,058	$	50,672	$	51,668	$	55,769
Operating income	9,765		6,281		16,941		5,164
Net income from continuing operations	$	735	$	5,607	$	21,491	$	4,702
Net income	$	735	$	7,742	$	21,643	$	6,510
Net income per share - basic
Net income from continuing operations	$	0.02	$	0.14	$	0.55	$	0.12
Net income per share	$	0.02	$	0.20	$	0.56	$	0.17
Net income per share - diluted
Net income from continuing operations	$	0.02	$	0.14	$	0.55	$	0.12
Net income per share	$	0.02	$	0.20	$	0.55	$	0.16

The sum of the quart