Consolidated statements of comprehensive (loss) income (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Comprehensive income (loss)
Net income (loss)	$ 83,513	$ (2,568)	$ 79,485	$ 35,142
Other comprehensive loss
Reclassification adjustment for hedge gains included in gain from oil hedging activities in the consolidated statements of operations	0	(9,032)	0	(28,544)
Income tax benefit related to other comprehensive loss	0	3,306	0	10,766
Other comprehensive loss, net of tax	0	(5,726)	0	(17,778)
Comprehensive income (loss)	$ 83,513	$ (8,294)	$ 79,485	$ 17,364