Consolidated Statements of Operations (Unaudited) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Income Statement [Abstract]
Revenues	$ 287,956	$ 162,499	$ 468,159	$ 323,947
Costs, expenses and other:
Cost of sales	248,389	130,528	387,019	260,949
Depreciation, depletion and amortization	24,479	15,397	40,538	29,823
Selling and administrative	28,709	11,969	42,040	23,855
Heritage health benefit expenses	3,388	3,109	6,932	7,060
Gain on sales of assets	(43)	(74)	(5)	(308)
Restructuring charges	7,543	0	7,941	0
Derivative loss	5,930	0	5,930	0
Income from equity affiliates	(799)	0	(799)	0
Other operating loss (income)	0	(10,405)	151	(15,142)
Total costs, expenses and other	317,596	150,524	489,747	306,237
Operating income (loss)	(29,640)	11,975	(21,588)	17,710
Other income (expense):
Interest expense	(21,786)	(10,076)	(42,584)	(20,236)
Loss on extinguishment of debt	(12,635)	(64)	(12,635)	(64)
Interest income	1,582	280	1,884	577
Gain (loss) on foreign exchange	2,649	0	(4,141)	0
Other income	483	130	576	198
Total other income (expense)	(29,707)	(9,730)	(56,900)	(19,525)
Income (loss) before income taxes	(59,347)	2,245	(78,488)	(1,815)
Income tax expense	3,807	28	3,697	55
Net income (loss)	(63,154)	2,217	(82,185)	(1,870)
Less net income attributable to noncontrolling interest	0	2,499	0	797
Net loss attributable to the Parent company	(63,154)	(282)	(82,185)	(2,667)
Less preferred stock dividend requirements	209	340	470	680
Net loss applicable to common shareholders	$ (63,363)	$ (622)	$ (82,655)	$ (3,347)
Net loss per share applicable to common shareholders:
Basic and diluted (in dollars per share)	$ (4.19)	$ (0.04)	$ (5.52)	$ (0.23)
Weighted average number of common shares outstanding:
Basic and diluted (shares)	15,136	14,495	14,962	14,389