XML 83 R47.htm IDEA: XBRL DOCUMENT v3.22.0.1
Income Taxes - Schedule of Components of Deferred Tax Assets and Liabilities (Details) - USD ($)
$ in Thousands
Dec. 31, 2021
Dec. 31, 2020
Deferred tax assets:    
Net operating loss carryforwards $ 49,791 $ 38,665
Federal and state research and development tax credits 7,756 6,103
Accrued liabilities and reserves 1,644 1,089
Stock-based compensation 2,331 1,273
Gross deferred tax assets 61,522 47,130
Valuation allowance (61,488) (47,060)
Deferred tax liabilities:    
Depreciation and amortization (34) (70)
Gross deferred tax liabilities (34) (70)
Net deferred taxes $ 0 $ 0