The sum of the portions of deferred tax assets as of the balance sheet date for which, based on the weight of available evidence, it is more likely than not will not be realized through future reductions of tax-based income.

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The sum of the current income tax expense or benefit and the deferred income tax expense or benefit pertaining to continuing operations.

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- Definition

This element represents the amount of statutory penalties accrued as of the date of the statement of financial position for a tax position claimed or expected to be claimed by the entity, in its tax return, that does not meet the minimum statutory threshold to avoid payment of penalties.

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- Definition

This element represents the total of accruals as of the date of the statement of financial position for interest recognized for an underpayment of income taxes computed by applying the applicable statutory rate of interest to the difference between a tax position recognized for financial reporting purposes and the amount previously taken or expected to be taken in a tax return of the entity and the amount of statutory penalties for a tax position claimed or expected to be claimed by the entity, in its tax return, that does not meet the minimum statutory threshold to avoid payment of penalties.

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- Definition

This element represents the amount of interest expense accrued as of the date of the statement of financial position for an underpayment of income taxes computed by applying the applicable statutory rate of interest to the difference between a tax position recognized for financial reporting purposes and the amount previously taken or expected to be taken in a tax return of the entity.

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INCOME TAXES (Details) (USD $)	3 Months Ended
INCOME TAXES (Details) (USD $)	Mar. 31, 2012	Mar. 31, 2011	Dec. 31, 2011
Income tax Expense Benefit
Recovery of income taxes recognized	$ 260,000	$ 3,373,000
Valuation allowance	130,200,000		128,700,000
Unrecognized tax benefits including interest and penalties	117,600,000
Unrecognized tax benefits related to interest and penalties	21,800,000
Portion of unrecognized tax benefits, if recognized, would reduce the Company's effective tax rate	68,300,000
Accrued interest related to unrecognized tax benefits	400,000
Accrued penalties related to unrecognized tax benefits	100,000
Canada
Income tax Expense Benefit
Recovery of income taxes recognized	(1,700,000)
Outside of Canada
Income tax Expense Benefit
Recovery of income taxes recognized	$ 2,000,000