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Income Taxes - Significant Components of Deferred Tax Assets and Liabilities (Details) - USD ($)
$ in Thousands
Dec. 31, 2022
Dec. 31, 2021
Deferred tax assets:    
Tax loss carryforwards $ 20,289 $ 17,506
Research and development credits and other tax credits 2,743 2,226
Stock-based compensation 1,317 962
Capitalized research and development 4,794 0
Other 1,431 1,750
Total deferred tax assets 30,574 22,444
Deferred tax liabilities:    
Operating lease right-of-use assets (492) (611)
Other 0 0
Total deferred tax liabilities (492) (611)
Net deferred tax assets before valuation allowance 30,082 21,833
Valuation allowance (30,082) (21,833)
Net deferred tax asset $ 0 $ 0