Annual report pursuant to Section 13 and 15(d)

Commitments and Contingencies - Summary of Future Minimum Annual Lease Payments (Detail)

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Commitments and Contingencies - Summary of Future Minimum Annual Lease Payments (Detail) - Vancouver Office Operating Lease [Member]
$ in Thousands
Dec. 31, 2022
USD ($)
Operating Leased Assets [Line Items]  
2023 $ 66
2024 66
2025 6
Total $ 138