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Income Taxes (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Operating loss carryforwards    
Effective tax rate (as a percent) 0.00% 0.00%
Income tax benefit $ 0  
Deferred Tax Assets, Gross 4,428 $ 30,754
Deferred Tax Assets, Valuation Allowance, Total 4,400 30,800
Federal net operating loss carryforwards 1,500 81,800
Federal research credit carry forward 24,000 1,000
Research and development credit carryforwards 26 1,483
State net operating loss carryforwards 65,000 42,600
State research credit carryforwards 2,000 600
Income tax:    
Uncertain tax positions 0 0
Interest or penalties 0 0
Federal    
Operating loss carryforwards    
Deferred Tax Assets, Valuation Allowance, Total 4,252 30,410
Net operating loss carryforwards written off 99,000  
Research credit carryforwards written off 1,200  
State    
Operating loss carryforwards    
Net operating loss carryforwards written off 48,500  
Research credit carryforwards written off 600  
Foreign    
Operating loss carryforwards    
Deferred Tax Assets, Valuation Allowance, Total 176 324
Operating Loss Carryforwards $ 700 $ 1,300