Derivative Instruments and Hedging Activities - Narrative (Details)	9 Months Ended
Sep. 30, 2020 $ / shares
Schedule of Trading Securities and Other Trading Assets
Maximum term of time in cash flow hedge	4 years
Warrants
Schedule of Trading Securities and Other Trading Assets
Strike price (in Canadian dollars per share)	$ 6.00

Maximum length of time over which the entity is hedging its exposure to the variability in future cash flows for forecasted transactions, excluding those forecasted transactions related to the payment of variable interest on existing financial instruments, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 30
-Section 50
-Paragraph 1
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=112277219&loc=d3e80748-113994

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration