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Other Investments - Summary of Other Investments (Details) - Equity Securities $ in Thousands, $ in Thousands |  | 12 Months Ended
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Mar. 04, 2019 shares | Dec. 31, 2020 USD ($) shares | Dec. 31, 2020 CAD ($) shares | Dec. 31, 2019 USD ($) shares | Dec. 31, 2018 USD ($) shares
Debt and Equity Securities, FV-NI [Line Items] |  |  |  |  |
Gain recognized in net income (loss) |  | $ 4,789 |  | $ 16,277 | $ 164
Canopy |  |  |  |  |
Debt and Equity Securities, FV-NI [Line Items] |  |  |  |  |
Gain recognized in net income (loss) |  | 0 |  | $ 51 | $ 166
Investment owned, number of shares sold (in shares) | shares |  |  |  | 11,062 | 18,436
Proceeds from sale of equity securities, FV-NI |  |  |  | $ 355 | $ 530
Vivo Cannabis |  |  |  |  |
Debt and Equity Securities, FV-NI [Line Items] |  |  |  |  |
Gain recognized in net income (loss) |  | 0 |  | 0 | $ (173)
Investment owned, number of shares sold (in shares) | shares |  |  |  |  | 182,927
Proceeds from sale of equity securities, FV-NI |  |  |  |  | $ 216
Number of securities called by warrants or rights (in shares) | shares |  |  |  |  | 182,927
Proceeds from exercise of warrants |  |  |  |  | $ 87
Vivo Cannabis | Warrants |  |  |  |  |
Debt and Equity Securities, FV-NI [Line Items] |  |  |  |  |
Gain recognized in net income (loss) |  | 0 |  | 0 | 171
Whistler |  |  |  |  |
Debt and Equity Securities, FV-NI [Line Items] |  |  |  |  |
Gain recognized in net income (loss) |  | $ 0 |  | 15,530 | 0
Investment owned, number of shares sold (in shares) | shares | 2,563 | 980,662 | 980,662 |  |
Investment owned, shares sold, percentage of shares issued and outstanding | 19.00% |  |  |  |
Shares received (in shares) | shares |  | 980,662 | 980,662 |  |
Aurora |  |  |  |  |
Debt and Equity Securities, FV-NI [Line Items] |  |  |  |  |
Gain recognized in net income (loss) |  | $ 4,789 | $ 6,404 | $ 696 | $ 0
Investment owned, number of shares sold (in shares) | shares |  |  |  | 2,524,341 |
Proceeds from sale of equity securities, FV-NI |  |  |  | $ 19,259 |
Shares received (in shares) | shares | 2,524,341 |  |  |  |

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