v2.4.0.6

Income taxes (Tables)

12 Months Ended

Dec. 31, 2012

Income taxes

Schedule of components of income tax expenses (benefit)

		2012			2011			2010
Current income tax expense (benefit)		$	7,773		$	1,584		$	960
Deferred tax expense (benefit)			(35,856	)		(12,688	)		15,058
Total income tax expense (benefit)		$	(28,083	)	$	(11,104	)	$	16,018

Schedule of reconciliation of income taxes calculated at the Canadian enacted statutory rate to the provision for income taxes in the consolidated statements of operations

The following is a reconciliation of income taxes calculated at the Canadian enacted statutory rate of 25.0%, 26.5%, and 28.5% at December 31, 2012, 2011 and 2010, respectively, to the provision for income taxes in the consolidated statements of operations:

		2012			2011			2010
Computed income tax expense at Canadian statutory rate		$	(36,216	)	$	(21,975	)	$	(3,410	)
Increases/(decreases) resulting from:
Operating countries with different income tax rates			(8,532	)		(10,553	)		(1,220	)
			(44,748	)		(32,528	)		(4,630	)
Change in valuation allowance			20,186			21,669			19,845
		$	(24,562	)	$	(10,859	)	$	15,215
Dividend withholding and preferred share taxes			5,912			371			765
Foreign exchange			1,505			(113	)		—
Permanent differences			(6,459	)		(1,479	)		—
Non-deductible acquisition costs			637			4,287			—
Non-deductible interest expense			—			2,134			—
Changes in tax rates			1,805			—			—
Federal stimulus grant			—			(6,573	)		—
Change in estimates of tax basis of equity method investments			(5,142	)		2,246			—
Other			(1,779	)		(1,118	)		38
			(3,521	)		(245	)		803
		$	(28,083	)	$	(11,104	)	$	16,018

Schedule of significant portions of the deferred tax assets and deferred tax liabilities

The tax effect of temporary differences that give rise to significant portions of the deferred tax assets and deferred tax liabilities at December 31, 2012 and 2011 are presented below:

		2012			2011
Deferred tax assets:
Loss carryforwards		$	130,149		$	122,472
Other accrued liabilities			10,906			28,059
Finance and share issuance costs			8,349			6,532
Disallowed interest carryforward			2,214			9,189
Derivative contracts			3,481			—
Unrealized foreign exchange loss			—			441
Other			6,094			—
Total deferred tax assets			161,193			166,693
Valuations allowance			(116,002	)		(89,020	)
			45,191			77,673
Deferred tax liabilities:
Intangible assets			(113,277	)		(121,055	)
Property, plant and equipment			(94,660	)		(133,689	)
Derivative contracts			—			(4,752	)
Other long-term investments			(1,272	)		(921	)
Other			—			(181	)
Total deferred tax liabilities			(209,209	)		(260,598	)
Net deferred tax liability		$	(164,018	)	$	(182,925	)

Summary of the net deferred tax position

The following table summarizes the net deferred tax position as of December 31, 2012 and 2011:

		2012			2011
Long-term deferred tax liabilities			(164,018	)		(182,925	)
Net deferred tax asset (liability)		$	(164,018	)	$	(182,925	)

Schedule of amounts of net operating loss carryforwards and their expiration years

As of December 31, 2012, we had the following net operating loss carryforwards that are scheduled to expire in the following years:

2027			63,565
2028			104,436
2029			85,277
2030			25,805
2031			59,265
2032			46,053
		$	384,401

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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 pertinent information, such as tax authority, amounts, and expiration dates, of net operating loss carryforwards, including an assessment of the likelihood of utilization.

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-Publisher FASB

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.



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