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

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Name:	us-gaap_DeferredIncomeTaxExpenseBenefit
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Income Taxes - Deferred Tax Expense (Details) - USD ($)	12 Months Ended
Income Taxes - Deferred Tax Expense (Details) - USD ($)	Dec. 31, 2019	Dec. 31, 2018
U.S.
Current income tax expense (benefit)
Deferred income tax expense (benefit)
Canada
Current income tax expense (benefit)
Deferred income tax expense (benefit)
Other Foreign
Current income tax expense (benefit)
Deferred income tax expense (benefit)