v3.26.1
Income Tax - Reconciliation of Income Tax Attributable to Operations (Detail) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Effective Income Tax Rate Reconciliation [Line Items]      
Income tax recovery at U.S. federal statutory income tax rate, Amount $ (11,476) $ (8,364) $ (6,261)
Change in valuation allowance, Amount 10,860 8,527 7,243
Other, Amount 17 (44) 10
Research and development tax credits, Amount (839) (1,084) (1,643)
Stock Based Compensation, Amount 1,077 610 360
Other, Amount $ 265 $ 293 $ 116
Income tax recovery at U.S. federal statutory income tax rate, Percent 21.00% 21.00% 21.00%
Domestic state & local income tax, net of federal income tax effect, Percent 0.00% 0.00% 0.00%
Changes in valuation allowance, Percent (19.90%) (21.40%) (24.30%)
Other, Percent 0.00% 0.10% 0.00%
Enactment of new tax laws, Percent 0.00% 0.00% 0.00%
Effect of cross-border laws, Percent 0.00% 0.00% 0.00%
Research and development tax credits, Percent 1.50% 2.70% 5.50%
Other, Percent 0.00% 0.00% 0.00%
Stock Based Compensation, Pecent (2.00%) (1.50%) (1.20%)
Other, Percent (0.50%) (0.70%) (0.40%)
Changes in unrecognized tax benefits, Percent 0.00% 0.00% 0.00%
Income tax expense/(recovery), Percent 0.00% 0.00% 0.00%
Foreign Tax Jurisdiction [Member]      
Effective Income Tax Rate Reconciliation [Line Items]      
Other foreign jurisdictions, Amount $ 1 $ 37 $ 144
Other foreign jurisdictions, Percent 0.00% (0.10%) (0.50%)
Canada [Member]      
Effective Income Tax Rate Reconciliation [Line Items]      
Impact of tax attribute expirations, Amount $ 2,312    
Change in valuation allowance, Amount (2,278) $ 31 $ 40
Other, Amount $ 61 $ (6) $ (9)
Impact of tax attribute expirations, Percent (4.20%) 0.00% 0.00%
Changes in valuation allowance, Percent 4.20% (0.10%) (0.10%)
Other, Percent (0.10%) 0.00% 0.00%