Property and Equipment - Summary of Property and Equipment (Detail) - USD ($) $ in Thousands |
Dec. 31, 2025 |
Dec. 31, 2024 |
|---|---|---|
| Property, Plant and Equipment [Line Items] | ||
| Cost | $ 256 | $ 256 |
| Accumulated Depreciation | 253 | 248 |
| Net Book Value | 3 | 8 |
| Computer equipment [Member] | ||
| Property, Plant and Equipment [Line Items] | ||
| Cost | 114 | 114 |
| Accumulated Depreciation | 111 | 108 |
| Net Book Value | 3 | 6 |
| Furniture and fixtures [Member] | ||
| Property, Plant and Equipment [Line Items] | ||
| Cost | 28 | 28 |
| Accumulated Depreciation | 28 | 28 |
| Leasehold improvements [Member] | ||
| Property, Plant and Equipment [Line Items] | ||
| Cost | 25 | 25 |
| Accumulated Depreciation | 25 | 25 |
| Computer software [Member] | ||
| Property, Plant and Equipment [Line Items] | ||
| Cost | 77 | 77 |
| Accumulated Depreciation | 77 | 75 |
| Net Book Value | 2 | |
| Equipment under capital lease [Member] | ||
| Property, Plant and Equipment [Line Items] | ||
| Cost | 12 | 12 |
| Accumulated Depreciation | $ 12 | $ 12 |