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Income Taxes (Tables)

12 Months Ended

Dec. 31, 2014

Income Taxes [Abstract]

Reconciliation of income taxes at statutory rates

			Years ended December 31,
			2014		2013		2012
Income taxed at statutory rates		$	(7,314)	$	(28,916)	$	(34,860)
Increase (decrease) in taxes from:
	Stock-based compensation		41		13		147
	Meals and entertainment		3		9		3
	Loss related to Mexico		-		(2,632)		-
	Other adjustments		-		(9)		6
	Adjustment due to capital transactions		-		(60)		(733)
	Imputed interest		3		3		24
	Realized fx gain (loss) on intercompany balances		-		(3)		(3)
	Prior year provision to actual adjustments		(4,511)		9,961		(40)
	Differences in tax rates		541		3,451		3,905
	Effect of foreign exchange		276		-		(340)
	Change in effective tax rate		(1)		(407)		(333)
	Expiration of NOLs		189		437		70
	Change in valuation allowance		10,773		2,780		12,007
Income tax (benefit)/expense		$	-	$	(15,373)	$	(20,147)

Schedule of Deferred Tax Assets and Liabilities

		December 31,
		2014		2013		2012
Deferred income tax assets
Excess tax basis over book basis of property, plant and equipment	$	7,893	$	7,496	$	8,001
Marketable securities		798		661		62
Operating loss carryforwards		35,001		36,367		37,635
Capital loss carryforwards		10,212		5,474		2,630
Other		2,891		1,541		3,219
Unrealized foreign exchange on loans		-		79		217
Total future tax assets		56,795		51,618		51,764
Valuation allowance for future tax assets		(54,397)		(43,955)		(41,817)
		2,398		7,663		9,947
Deferred income tax liabilities
Other investments		1,916		7,181		24,839
Amayapampa disposal consideration		482		482		482
		2,398		7,663		25,321
Total Deferred Taxes	$	-	$	-	$	(15,374)

Summary of Tax Credit Carryforwards and Expirations

		Noncapital
		Canada (1)			U.S.			Mexico			Barbados			Total
2014		$	-		$	-		$	-		$	-		$	-
2015			(889)			-			-			(2)			(891)
2016			-			-			-			(1)			(1)
2017			-			-			-			(6)			(6)
2018			-			-			-			(20)			(20)
2019			-			-			-			(42)			(42)
2020			-			-			-			(20)			(20)
2021			-			-			-			(31)			(31)
2022			-			-			(6)			(23)			(29)
2023			-			-			(397)			-			(397)
2024			-			-			(140)			-			(140)
2025			-			-			-			-			-
2026			(1,027)			(1,166)			-			-			(2,193)
2027			(847)			(1,700)			-			-			(2,547)
2028			(5,245)			(1,719)			-			-			(6,964)
2029			(4,022)			(1,970)			-			-			(5,992)
2030			(5,032)			(1,827)			-			-			(6,859)
2031			(3,806)			(3,407)			-			-			(7,213)
2032			(6,397)			(2,323)			-			-			(8,720)
2033			(9,576)			(3,098)			-			-			(12,674)
2034			(4,323)			-									(4,323)
		$	(41,164)		$	(17,210)		$	(543)		$	(146)		$	(59,062)

Schedule of Income before Income Tax, Domestic and Foreign [Table Text Block]

			Years ended December 31,
		2014			2013			2012
U.S.		$	(6,705)		$	(49,124)		$	(52,448)
Canada			(7,750)			(9,540)			(11,962)
Other Foreign			(4,471)			(16,197)			(26,393)
		$	(18,926)		$	(74,861)		$	(90,803)

Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]

				Years ended December 31,
			2014			2013			2012
Deferred income tax benefit
	U.S.		$	-		$	(15,373)		$	(20,147)
	Canada			-			-			-
	Other Foreign			-			-			-
Total tax benefit			$	-		$	(15,373)		$	(20,147)

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Tabular disclosure of the components of income tax expense attributable to continuing operations for each year presented including, but not limited to: current tax expense (benefit), deferred tax expense (benefit), investment tax credits, government grants, the benefits of operating loss carryforwards, tax expense that results from allocating certain tax benefits either directly to contributed capital or to reduce goodwill or other noncurrent intangible assets of an acquired entity, adjustments of a deferred tax liability or asset for enacted changes in tax laws or rates or a change in the tax status of the entity, and adjustments of the beginning-of-the-year balances of a valuation allowance because of a change in circumstances that causes a change in judgment about the realizability of the related deferred tax asset in future years.

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Tabular disclosure of the components of net deferred tax asset or liability recognized in an entity's statement of financial position, including the following: the total of all deferred tax liabilities, the total of all deferred tax assets, the total valuation allowance recognized for deferred tax assets.

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Tabular disclosure of the reconciliation using percentage or dollar amounts of the reported amount of income tax expense attributable to continuing operations for the year to the amount of income tax expense that would result from applying domestic federal statutory tax rates to pretax income from continuing operations.

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Tabular disclosure of income before income tax between domestic and foreign 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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