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Summary of Significant Accounting Policies - Significant Accounting Policies (Details) - USD ($) $ / shares in Units, $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Mar. 05, 2020
Research and development incentive income and receivable |  |  |
Research and development expenses reimbursed (as a percent) | 43.50% | 43.50% |
Research and development incentive income and receivable |  |  |
Balance at the beginning of the period | $ 73 | $ 185 |
Australian research and development incentive income, net | 1,226 | 231 |
Cash received for eligible expenses | (111) | (331) |
Foreign currency translation | 1 | (12) |
Balance at the end of the period | 1,189 | 73 |
Business Combination, Contingent Consideration, Asset, Current | 1,189 | 73 |
Income Taxes |  |  |
Uncertain tax positions | 0 | 0 |
Deferred Offering Costs |  |  |
Deferred costs | 0 | 345 |
Other Assets |  |  |
Deposits with service providers that are to be applied to future payments | $ 293 | 980 |
Dividend attributable to down round feature of warrants |  | 303 |
Incremental borrowing rate | 8.00% |  |
License and Service [Member] |  |  |
Other Assets |  |  |
Deposits with service providers that are to be applied to future payments | $ 293 | $ 980 |
January 2020 Private Placement |  |  |
Other Assets |  |  |
Exercise price of warrant | $ 1.055 | $ 1.75 | $ 2.11
Dividend attributable to down round feature of warrants |  | $ 303 |
Computer equipment |  |  |
Property and Equipment |  |  |
Useful life (in years) | 3 years |  |
Lab equipment |  |  |
Property and Equipment |  |  |
Useful life (in years) | 5 years |  |
Office Equipment |  |  |
Property and Equipment |  |  |
Useful life (in years) | 5 years |  |
Furnitures and fixtures |  |  |
Property and Equipment |  |  |
Useful life (in years) | 5 years |  |

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