Income Taxes (Tables)

3 Months Ended

Mar. 31, 2012

Income Tax Disclosure [Abstract]

Schedule of provision for income taxes

The provision for income taxes consists of the following:

	For the Three Months Ended March 31,
	2012			2011
	(in thousands)
Current portion of income tax benefit (expense):
Federal	$	—		$	(6,944	)
State	(393		)	(175		)
Deferred portion of income tax benefit (expense)	(15,288		)	18,174
Total income tax benefit (expense)	$	(15,681	)	$	11,055
Effective tax rate	37.3		%	37.4		%