CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
OPERATING ACTIVITIES
Net loss	$ (2,535,260)	$ (243,569)
Adjustments to reconcile net loss to net cash flows used in operating activities:
Depreciation and depletion	110,660	146,240
Deferred income tax benefit	(665,413)	(41,257)
Amortization of debt issuance costs and debt discount, net	7,065	8,356
(Gain) loss on extinguishment of debt	(58,626)	2,492
Impairment charges	2,897,928	23,043
Other	29,993	16,140
Decrease (increase) in current assets:
Trade receivables, net	19,375	11,326
Other receivables	(1,699)	23,384
Inventories	32,504	30,774
Prepaid expenses and other current assets	(5,762)	(6,437)
Increase (decrease) in current liabilities:
Accounts payable	12,344	(32,227)
Accrued interest	23,348	9,168
Accrued expenses and other current liabilities	(13,587)	13,559
Cash flows used in operating activities	(147,130)	(39,008)
INVESTING ACTIVITIES
Additions to property, plant and equipment	(48,332)	(43,476)
Proceeds from sale of property, plant and equipment	1,706	0
Other	589	(350)
Cash flows used in investing activities	(46,037)	(43,826)
FINANCING ACTIVITIES
Proceeds from issuance of debt	0	553,000
Retirements of debt	(7,048)	(414,124)
Dividends paid	0	(1,284)
Debt issuance costs	0	(21,325)
Other	(60)	(191)
Cash flows provided by (used in) financing activities	(7,108)	116,076
Effect of foreign exchange rates on cash	(1,254)	(588)
Net increase (decrease) in cash and cash equivalents	(201,529)	32,654
Cash and cash equivalents at beginning of period	468,532	260,818
Cash and cash equivalents at beginning of period	$ 267,003	$ 293,472