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Common Stock and Warrants - Summary of Warrant Activity (Details) |  | 12 Months Ended
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Dec. 31, 2020 $ / shares shares | Dec. 31, 2020 $ / shares shares | Dec. 31, 2020 $ / shares shares | Dec. 31, 2020 $ / shares shares | Dec. 31, 2019 $ / shares shares | Dec. 31, 2019 $ / shares shares
Class Of Warrant Or Right [Line Items] |  |  |  |  |  |
Number of Warrants, Exercised | (2,025) | (2,025) |  |  |  |
Number of Warrants, Outstanding | 341,905 | 341,905 | 341,905 | 341,905 |  |
CAD |  |  |  |  |  |
Class Of Warrant Or Right [Line Items] |  |  |  |  |  |
Number of Warrants, Outstanding |  |  | 68,351 | 68,351 | 95,799 | 95,799
Number of Warrants, Cancelled/Expired |  |  |  |  | (26,352) | (26,352)
Number of Warrants, Exercised |  |  |  |  | (1,096) | (1,096)
Number of Warrants, Outstanding |  |  |  |  | 68,351 | 68,351
Number of Warrants, Outstanding and exercisable | 68,351 | 68,351 | 68,351 | 68,351 |  |
Weighted-Average Exercise Price, Outstanding | $ / shares |  |  |  | $ 428.75 |  | $ 381.15
Weighted Average Exercise Price, Cancelled/Expired | $ / shares |  |  |  |  |  | 262.50
Weighted-Average Exercise Price, Exercised | $ / shares |  |  |  |  |  | 262.50
Weighted-Average Exercise Price, Outstanding | $ / shares |  |  |  |  |  | $ 428.75
Weighted-Average Exercise Price, Outstanding and exercisable | $ / shares |  | $ 428.75 |  | $ 428.75 |  |
USD |  |  |  |  |  |
Class Of Warrant Or Right [Line Items] |  |  |  |  |  |
Number of Warrants, Outstanding |  |  | 18,607 | 18,607 | 18,607 | 18,607
Number of Warrants, Granted |  |  | 273,554 | 273,554 |  |
Number of Warrants, Cancelled/Expired |  |  | (18,607) | (18,607) |  |
Number of Warrants, Outstanding |  |  |  |  | 18,607 | 18,607
Number of Warrants, Outstanding and exercisable | 273,554 | 273,554 | 273,554 | 273,554 |  |
Weighted-Average Exercise Price, Outstanding | $ / shares |  |  | $ 428.32 |  | $ 428.32 |
Weighted-Average Exercise Price, Granted | $ / shares |  |  | 16.04 |  |  |
Weighted Average Exercise Price, Cancelled/Expired | $ / shares |  |  | 428.32 |  |  |
Weighted-Average Exercise Price, Outstanding | $ / shares |  |  |  |  | $ 428.32 |
Weighted-Average Exercise Price, Outstanding and exercisable | $ / shares | $ 16.04 |  | $ 16.04 |  |  |

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