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Income Tax (Deferred Tax Expense) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Deferred Income Tax Expense (Benefit), Total		$ (15,373)us-gaap_DeferredIncomeTaxExpenseBenefit	$ (20,147)us-gaap_DeferredIncomeTaxExpenseBenefit
U.S.
Deferred Federal Income Tax Expense (Benefit)		(15,373)	(20,147)
Foreign Tax Authority [Member]
Deferred Foreign Income Tax Expense (Benefit)
Canada [Member]
Deferred Foreign Income Tax Expense (Benefit)

Amount of deferred federal income tax expense (benefit) pertaining to income (loss) from continuing operations.

Amount of deferred foreign income tax expense (benefit) pertaining to income (loss) from continuing operations.

Amount of deferred income tax expense (benefit) pertaining to income (loss) from continuing operations.