XML 74 R63.htm IDEA: XBRL DOCUMENT v3.22.0.1
Income Taxes - Significant Components of Deferred Tax Assets and Liabilities (Details) - USD ($)
$ in Thousands
Dec. 31, 2021
Dec. 31, 2020
Deferred tax assets:    
Tax loss carryforwards $ 47,902 $ 42,331
Research and development credits and other tax credits 4,035 3,904
Stock-based compensation 962 684
Other 1,750 1,116
Total deferred tax assets 54,649 48,035
Deferred tax liabilities:    
Operating lease right-of-use assets (611) (74)
Other 0 (6)
Total deferred tax liabilities (611) (80)
Net deferred tax assets before valuation allowance 54,038 47,955
Valuation allowance (54,038) (47,955)
Net deferred tax asset $ 0 $ 0