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Commitments and Contingencies - Additional Information (Detail) |  |  | 3 Months Ended | 6 Months Ended
--- | --- | --- | --- | ---
Dec. 16, 2022 | Nov. 19, 2018 USD ($) ft² | Jun. 30, 2024 USD ($) | Jun. 30, 2023 USD ($) | Jun. 30, 2024 USD ($) | Jun. 30, 2023 USD ($)
Other Commitments [Line Items] |  |  |  |  |  |
Consolidated rent expense |  |  | $ 29,000 | $ 28,000 | $ 58,000 | $ 57,000
Indemnification obligations |  |  | $ 0 |  | 0 |
Expenses related to indemnification issues |  |  |  |  | $ 0 |
Vancouver Office Operating Lease [Member] | Vancouver, British Columbia [Member] |  |  |  |  |  |
Other Commitments [Line Items] |  |  |  |  |  |
Lease agreement commencement date | Feb. 01, 2023 | Feb. 01, 2019 |  |  |  |
Area of office space leased | ft² |  | 2,367 |  |  |  |
Operating lease, term of contract |  | 4 years |  |  |  |
Lessee, Operating Lease, Existence of Option to Extend [true false] | true |  |  |  |  |
Operating lease, extension term | 2 years |  |  |  |  |
Annual rent expense |  | $ 100,000 |  |  |  |

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