CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Income Statement [Abstract]
Revenue	$ 173,567	$ 147,046	$ 463,828	$ 396,139
Cost of goods sold before depreciation, depletion and amortization	142,215	124,996	386,092	341,843
Selling, general and administrative expenses	14,601	15,063	45,523	42,286
Depreciation, depletion and amortization	4,753	3,677	14,177	11,070
(Gain) loss on sale of assets	(39)	67	(65)	(532)
Income from operations	12,037	3,243	18,101	1,472
Interest expense, net	(2,477)	(2,842)	(7,837)	(8,616)
Derivative loss	(5,467)	(2,576)	(25,829)	(6,544)
(Loss) gain on extinguishment of debt	(1,673)	(2,630)	2,631	(2,630)
Other income, net	395	463	1,392	1,983
Income (loss) from continuing operations before income taxes	2,815	(4,342)	(11,542)	(14,335)
Income tax (expense) benefit	(9,976)	472	(1,691)	178
Loss from continuing operations	(7,161)	(3,870)	(13,233)	(14,157)
(Loss) income from discontinued operations, net of taxes	(141)	659	(1,758)	408
Net loss	$ (7,302)	$ (3,211)	$ (14,991)	$ (13,749)
Basic and diluted loss per share:
Loss from continuing operations (usd per share)	$ (0.54)	$ (0.32)	$ (1.04)	$ (1.16)
(Loss) income from discontinued operations, net of taxes (usd per share)	$ (0.01)	$ 0.06	$ (0.14)	$ 0.03
Net loss per share – basic and diluted (usd per share)	$ (0.55)	$ (0.26)	$ (1.18)	$ (1.13)
Weighted average shares outstanding:
Weighted average shares outstanding, Basic and diluted	13,207	12,218	12,705	12,174