Consolidated Statements of Cash Flows (Unaudited) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012
Cash flows from operating activities:
Net loss	$ (47,745)	$ (52,932)
Stock-based compensation	2,641	2,090
Depreciation, depletion and amortization	22,105	34,358
Amortization of investment in Ecuador property	89	141
Deferred income taxes	(8,951)	(9,571)
Loss on disposition of assets	2,683
Loss on extinguishment of debt	7,222	7,318
Amortization of discount and deferred financing fees	7,177	7,370
Unrealized (gain) loss on derivatives	(2,985)	1,576
Other non-cash items included in income	522
Changes in operating assets and liabilities:
(Increase) decrease in accounts receivable	19,438	(58)
(Increase) decrease in value-added tax receivable	9,727	(12,573)
(Increase) decrease in inventory	1,749	(650)
Increase in other assets	(862)	(4,276)
Decrease in income taxes receivable		445
Decrease in accounts payable	(16,317)	(13,222)
Increase (decrease) in accrued liabilities	(19,855)	3,744
Decrease in income taxes payable	(11,704)
Decrease in other liabilities	(1,204)	(560)
Net cash used in operating activities	(36,270)	(36,800)
Cash flows from investing activities:
Property and equipment additions	(8,229)	(68,082)
(Increase) decrease in restricted cash	67,440	(2,082)
Proceeds from maturity of investment securities	1,000
Purchase of investment securities	(1,000)
Net cash provided by (used in) investing activities	59,211	(70,164)
Cash flows from financing activities:
Borrowings	78,355	176,561
Repayments of borrowings	(99,107)	(49,828)
Deferred and other loan fees	(6,782)	(2,640)
Proceeds from sale of common stock, net	36	78
Net cash provided by (used in) financing activities	(27,498)	124,171
Net increase in cash and cash equivalents	(4,557)	17,207
Cash and cash equivalents at beginning of period	83,540	58,172
Cash and cash equivalents at end of period	78,983	75,379
Cash paid for:
Interest	16,752	20,800
Income tax	14,131	689
Non — cash items:
Convertible debt exchanged	72,850
Depletion allocated to production inventory	27	222
Depreciation on support equipment capitalized to construction in progress		37
Reclassification of property and equipment to accounts receivable and accrued liabilities	952
Gain on capital lease repayment capitalized to property and equipment		$ 180