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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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