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Stockholders' Equity - Additional Information (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands | 3 Months Ended | 9 Months Ended |  |
--- | --- | --- | --- | ---
Sep. 30, 2022 | Jun. 30, 2022 | Mar. 31, 2022 | Sep. 30, 2022 | Sep. 30, 2021 | Dec. 31, 2021 | Aug. 31, 2020
Stockholders Equity Note [Line Items] |  |  |  |  |  |  |
Common stock, no par value | $ 0 |  |  | $ 0 |  | $ 0 |
Options outstanding | 4,466 | 4,337 | 4,051 | 4,466 |  | 4,259 |
Exercise of options (in shares) | 151 | 19 | 26 |  |  |  |
Number of stock options forfeited (in shares) | 30 |  | 382 |  |  |  |
Number of Options Granted | 310 | 305 | 200 |  |  |  |
Proceeds from issuance of stock options |  |  |  | $ 249 | $ 24 |  |
Cash expense capitalized, warrant issues |  |  |  | 175 |  |  |
Non cash expense capitalized, warrant issues |  |  |  | $ 441 |  |  |
Equity Incentive Plan |  |  |  |  |  |  |
Stockholders Equity Note [Line Items] |  |  |  |  |  |  |
Exercise of options (in shares) | 151 |  |  | 196 |  |  |
Number of Options Granted | 310 |  |  | 815 |  |  |
Proceeds from issuance of stock options | $ 188 |  |  | $ 249 |  |  |
Shares issuable under Stock Option Plan, as percent of shares outstanding |  |  |  | 25.00% |  |  |
Vesting period |  |  |  | 3 years |  |  |
Expiration term |  |  |  | 10 years |  |  |
Stock Option In Canadian Dollars [Member] |  |  |  |  |  |  |
Stockholders Equity Note [Line Items] |  |  |  |  |  |  |
Options outstanding |  |  |  |  |  |  | 0
Stock Option In Us Dollars [Member] | Equity Incentive Plan |  |  |  |  |  |  |
Stockholders Equity Note [Line Items] |  |  |  |  |  |  |
Options outstanding | 4,466 |  |  | 4,466 |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Exercisable, Number | 3,448 |  |  | 3,448 |  |  |
U.S.dollars [Member] |  |  |  |  |  |  |
Stockholders Equity Note [Line Items] |  |  |  |  |  |  |
Class Or Warrant Or Right Outstanding Weighted Average Remaining Contractual Terms |  |  |  | 5 years 3 months 18 days |  |  |
Maximum | Equity Incentive Plan |  |  |  |  |  |  |
Stockholders Equity Note [Line Items] |  |  |  |  |  |  |
Shares issuable under Stock Option Plan | 6,559 |  |  | 6,559 |  |  |

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