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Income Taxes - Significant Components of Deferred Tax Assets and Liabilities (Details) - USD ($)
$ in Thousands
Dec. 31, 2023
Dec. 31, 2022
Deferred tax assets:    
Tax loss carryforwards $ 23,441 $ 20,289
Research and development credits and other tax credits 3,611 2,743
Stock-based compensation 1,407 1,317
Capitalized research and development 9,687 4,794
Other 1,400 1,431
Total deferred tax assets 39,546 30,574
Deferred tax liabilities:    
Operating lease right-of-use assets (375) (492)
Total deferred tax liabilities (375) (492)
Net deferred tax assets before valuation allowance 39,171 30,082
Valuation allowance (39,171) (30,082)
Net deferred tax asset $ 0 $ 0