v3.26.1
Income Taxes - Reconciliation of Expected Tax Expense with Actual Tax Expense (Detail) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Effective Income Tax Rate Reconciliation [Line Items]      
U.S. federal statutory rate , Amount $ (1,259) $ (660) $ (3,581)
U.S. federal statutory rate 21.00% 21.00% 21.00%
State tax rate, net of federal effect, Amount $ 2 $ 2 $ 2
State tax rate, net of federal benefit 0.00% 0.10% 0.00%
Statutory tax rate difference between Israel and United States, Amount $ (67) $ (76) $ (187)
Statutory tax rate difference between Israel and United States 1.10% 2.40% 1.10%
Other items, Amount $ 9 $ 1 $ (5)
Other items (0.20%) 0.00% 0.00%
Research and development credit, Amount $ (142) $ (280) $ (3,426)
Research and development credit 2.40% 8.90% 20.10%
Stock compensation, Amount $ 17 $ 749 $ 358
Stock compensation (0.30%) (23.80%) (2.10%)
Warrant valuation, Amount   $ (79) $ (334)
Warrant valuation   2.50% 2.00%
Other nontaxable or nondeductible items, Amount $ 2 $ 19 $ 322
Other nontaxable or nondeductible items 0.00% (0.70%) (1.90%)
Income tax provision 0.00% 0.00% 0.00%
Foreign Tax Jurisdiction [Member]      
Effective Income Tax Rate Reconciliation [Line Items]      
U.S. Changes in valuation allowances, Amount $ 683 $ (544) $ 4,695
U.S. Changes in valuation allowances (11.40%) 17.30% (27.50%)
UNITED STATES      
Effective Income Tax Rate Reconciliation [Line Items]      
U.S. Changes in valuation allowances, Amount $ 755 $ 868 $ 2,157
U.S. Changes in valuation allowances (12.60%) (27.60%) (12.70%)