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Income Taxes - Additional Information (Details) - USD ($) | 12 Months Ended |
--- | --- | ---
Dec. 31, 2020 | Dec. 31, 2019
Income Taxes [Line Items] |  |
Income tax losses | $ 19,198,000 |
Scientific research and experimental development expenditures | 28,200,000 |
Investment tax credits | $ 4,304,000 |
Tax examination | 2016 2017 2018 2019 2020 |
Unrecognized tax positions | $ 0 | $ 0
Accrued interest or penalties | 0 | $ 0
U.S. Federal Research and Development |  |
Income Taxes [Line Items] |  |
Tax credit carryforward, amount | $ 800,000 |
Tax credit carry forward expiration year | 2038 |
U.S. State Research and Development |  |
Income Taxes [Line Items] |  |
Tax credit carryforward, amount | $ 200,000 |
Tax credit carry forward expiration year | 2038 |

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