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Income Taxes (Tables)

12 Months Ended

Dec. 31, 2011

Income Taxes [Abstract]

Components of loss from continuing operations before income taxes


		Years Ended December 31,
		2011				2010				2009
United States		$	(38,781	)		$	(37,710	)		$	25,650
Foreign			246,617				(54,955	)			(101,723	)

Total		$	207,836			$	(92,665	)		$	(76,073	)

Income tax provision from continuing operations


		Years Ended December 31,
		2011				2010				2009
Current:
United States — Alternative minimum tax		$	2,015			$	(482	)		$	(2,249	)
United States — Foreign withholding tax			(842	)			(1,009	)			(1,509	)
Argentina			(1,219	)			(7,094	)			(6,284	)
Australia			(1,755	)			(251	)			592
Mexico			(1,084	)			(316	)			(124	)
Bolivia			(59,660	)			(20,268	)			(2,673	)
Canada			—				—				(53	)
Deferred:
Australia			(661	)			(541	)			200
Bolivia			(207	)			(1,388	)			(6,221	)
Mexico			(28,022	)			24,371				37,681
United States			(22,902	)			16,459				13,711

Income tax benefit (expense)		($	114,337	)		$	9,481			$	33,071

Reconciliation of effective tax rate with the federal statutory tax rate


		Years Ended December 31
		2011				2010				2009
Tax benefit (expense) from continuing operations		$	(72,743	)		$	32,433			$	26,625
State tax provision from continuing operations			(10,600	)			4,726				2,282
Percentage depletion and related deductions			—				3,093				2,726
Change in valuation allowance			(6,032	)			2,734				20,303
Non-deductible imputed interest			(808	)			(1,718	)			(1,986	)
Uncertain tax positions			(1,279	)			(299	)			898
U.S. and foreign non-deductible expenses			(10,648	)			(9,052	)			(3,619	)
Foreign exchange rates			(4,440	)			(7,066	)			2,339
Foreign inflation and indexing			(3,829	)			(3,352	)			(2,635	)
Foreign tax rate differences			22,795				(9,861	)			(11,993	)
Foreign withholding taxes			(23,246	)			(2,986	)			(1,509	)
Other, net			(3,507	)			829				(360	)

		($	114,337	)		$	9,481			$	33,071

Deferred tax assets and liabilities


		Years Ended December 31
		2011				2010
Deferred tax liabilities:
Mineral properties		$	453,818			$	450,902
Foreign subsidiaries — unremitted earnings			235,116				154,610
Property, plant and equipment, net			68,013				73,168

			756,947				678,680

Deferred tax assets:
Net operating loss carryforwards			128,073				165,362
Foreign subsidiaries — future tax credits			133,160				61,724
Royalty and other long-term debt			48,254				51,134
Capital loss carryforwards			35,562				42,830
Asset retirement obligation			9,638				9,003
Unrealized foreign currency loss and other			3,974				4,857
Accrued expenses			23,247				19,929
Tax credit carryforwards			11,987				11,127
Inventory			6,069				3,050

			399,964				369,016
Valuation allowance			(168,511	)			(164,036	)

			231,453				204,980

Net deferred tax liabilities		$	(525,494	)		$	(473,700	)

Recorded valuation allowances


		Years Ended December 31
		2011				2010
U.S.		$	123,539			$	121,159
Argentina			10,739				7,591
Canada			5,390				6,720
New Zealand			27,026				26,871
Other			1,817				1,695

		$	168,511			$	164,036

Reconciliation of the beginning and ending amount related to unrecognized tax benefits

A reconciliation of the beginning and ending amount related to unrecognized tax benefits is as follows:


Unrecognized tax benefits at January 1, 2010		$	748
Gross increase to current period tax positions			328
Gross decrease to prior period tax positions			—

Unrecognized tax benefits at December 31, 2010		$	1,076
Gross increase to current period tax positions			1,279
Gross decrease to prior period tax positions			—

Unrecognized tax benefits at December 31, 2011		$	2,355

Tax attribute carryforwards


		U.S.				Australia				Bolivia				Canada				Chile				Mexico				New Zealand				Other				Total
Regular net operating losses			122,388				—				—				4,798				—				172,532				96,524				6,056				402,298
Alternative minimum tax net operating losses			15,285				—				—				—				—				—				—				—				15,285
Capital losses			90,258				—				—				—				—				—				—				—				90,258
Alternative minimum tax credits			3,645				—				—				—				—				—				—				—				3,645
Foreign tax credits			12,659				—				—				—				—				—				—				—				12,659

Tabular disclosure of tax positions taken in the tax returns filed or to be filed for which it is more likely than not that the tax position will not be sustained upon examination by taxing authorities (i.e., uncertain tax positions) and other types of income tax contingencies, including: (1) the policy on classification of interest and penalties; (2) a tabular reconciliation of the total amounts of unrecognized tax benefits at the beginning and end of the period; the total amount(s) of: (3) unrecognized tax benefits that, if recognized, would affect the effective tax rate, and (4) interest and penalties recognized in each of the income statement and balance sheet; (5) for positions for which it is reasonably possible that the total amounts unrecognized will significantly change within 12 months of the reporting date the: (i) nature of the uncertainty, (ii) nature of the event that could occur that would cause the change, and (iii) an estimate of the range of the reasonably possible change or a statement that an estimate of the range cannot be made; and (6) a description of tax years that remain subject to examination by major tax jurisdictions.

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Tabular disclosure of tax credit carryforwards available to reduce future taxable income, including amounts, expiration dates, limitations on use and the related deferred tax assets and valuation allowances.

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Tabular disclosure of valuation allowances to reduce deferred tax assets to net realizable value, including identification of the deferred tax asset more likely than not will not be fully realized and the corresponding amount of the valuation allowance.

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