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Stock-Based Compensation - Summary of Share Based Compensation Expense Recognized (Details) - USD ($)
$ in Thousands
7 Months Ended 12 Months Ended
Dec. 31, 2020
Dec. 31, 2021
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]    
Stock based compensation expense $ 155 $ 17,764
Research and Development [Member]    
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]    
Stock based compensation expense 125 6,591
Selling, General and Administrative [Member]    
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]    
Stock based compensation expense $ 30 $ 11,173