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Capital Stock - Narrative (Details) $ in Thousands			12 Months Ended
	Dec. 23, 2019 USD ($) shares	Mar. 08, 2019 shares	Dec. 31, 2020 USD ($) vote shares	Dec. 31, 2019 USD ($) installment shares	Dec. 31, 2018 USD ($) shares
Subsidiary, Sale of Stock [Line Items]
Common shares, number of votes per share | vote			1
Shares issued				$ 304,821	$ 115,510
Share issuance costs			$ 0	3,722	7,577
Altria Investment
Subsidiary, Sale of Stock [Line Items]
Shares issued (in shares) | shares		149,831,154
Shares issued				1,809,556
Share issuance costs				3,722
Transaction costs				25,223
Redwood Acquisition
Subsidiary, Sale of Stock [Line Items]
Stock issued during period, new issues, fair value				$ 56,109
Private Placements
Subsidiary, Sale of Stock [Line Items]
Consideration transferred, common shares (in shares) | shares				856,017
Common stock, vesting rights, number of equal installments | installment				3
Consideration transferred, common shares, amount				$ 6,000
Bought Deal Offerings
Subsidiary, Sale of Stock [Line Items]
Shares issued					115,510
Share issuance costs					$ 7,577
Common Shares
Subsidiary, Sale of Stock [Line Items]
Shares issued (in shares) | shares			0	155,773,757	15,677,143
Shares issued				$ 304,411	$ 115,510
Stock repurchased during period (in shares) | shares			0	0	0
Common Shares | Altria Investment
Subsidiary, Sale of Stock [Line Items]
Shares issued (in shares) | shares			0	149,831,154	0
Shares issued				$ 248,302
Transaction costs				$ 3,642
Common Shares | Redwood Acquisition
Subsidiary, Sale of Stock [Line Items]
Shares issued (in shares) | shares			0	5,086,586	0
Common Shares | Private Placements
Subsidiary, Sale of Stock [Line Items]
Shares issued (in shares) | shares	856,017		0	856,017	0
Stock issued during period, new issues, fair value	$ 6
Stock issued during period, new issues, measurement input	10 days			10 days
Common Shares | Bought Deal Offerings
Subsidiary, Sale of Stock [Line Items]
Shares issued (in shares) | shares			0	0	15,677,143
Derivative Liability | Altria Investment
Subsidiary, Sale of Stock [Line Items]
Transaction costs				$ 21,581

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