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Income Taxes - Reconciliation Effective Tax Rate (Details)
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Reconciliation of statutory federal income tax    
Tax at statutory federal rate 21.00% 21.00%
State taxes, net of federal benefit 1.90% 1.80%
Stock-based compensation 4.20% 4.70%
IRC section 162(m) limitation 1.10%  
Change in valuation allowance (28.00%) (27.50%)
Other   0.10%
Provision for income taxes 0.20% 0.10%