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Derivative Liabilities - Schedule of Fair Values of Derivative Liabilities (Details)	12 Months Ended
	Dec. 31, 2020 $ / shares	Dec. 31, 2019 $ / shares
Altria Warrant | Share price at grant date (per share in C$)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative liability, measurement input	8.84	9.97
Altria Warrant | Subscription price (per share in C$)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative liability, measurement input	19.00	19.00
Altria Warrant | Expected annualized volatility
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative liability, measurement input	0.81	0.82
Altria Warrant | Expected dividend yield
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative liability, measurement input	0	0
Altria Warrant | Weighted Average | Weighted average risk-free interest rate
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative liability, measurement input	0.0021	0.0169
Altria Warrant | Weighted Average | Weight average expected life (in years)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Expected life	2 years 2 months 4 days	3 years 2 months 4 days
Pre-emptive Rights | Share price at grant date (per share in C$)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative liability, measurement input	8.84	9.97
Pre-emptive Rights | Subscription price (per share in C$)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative liability, measurement input	16.25	16.25
Pre-emptive Rights | Expected annualized volatility
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative liability, measurement input	0.81	0.82
Pre-emptive Rights | Expected dividend yield
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative liability, measurement input	0	0
Pre-emptive Rights | Weighted Average | Weighted average risk-free interest rate
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative liability, measurement input	0.0017	0.0173
Pre-emptive Rights | Weighted Average | Weight average expected life (in years)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Expected life	1 year 6 months	1 year 3 months
Top-up Rights | Share price at grant date (per share in C$)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative liability, measurement input	8.84	9.97
Top-up Rights | Subscription price (per share in C$)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative liability, measurement input	16.25	16.25
Top-up Rights | Expected annualized volatility
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative liability, measurement input	0.81	0.82
Top-up Rights | Expected dividend yield
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative liability, measurement input	0	0
Top-up Rights | Weighted Average | Weighted average risk-free interest rate
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative liability, measurement input	0.0013	0.0171
Top-up Rights | Weighted Average | Weight average expected life (in years)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Expected life	11 months 23 days	1 year 7 months 28 days
Pre-Emptive Rights and Top-Up Rights | Minimum | Weighted average risk-free interest rate
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative liability, measurement input	0.0010	0.0166
Pre-Emptive Rights and Top-Up Rights | Minimum | Weight average expected life (in years)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Expected life	6 months	3 months
Pre-Emptive Rights and Top-Up Rights | Maximum | Weighted average risk-free interest rate
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative liability, measurement input	0.0039	0.0173
Pre-Emptive Rights and Top-Up Rights | Maximum | Weight average expected life (in years)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Expected life	5 years	6 years

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+ References

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+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (bbb)(2)
-URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258

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