XML 74 R57.htm IDEA: XBRL DOCUMENT v3.22.1
Stock-Based Compensation - Allocated Stock-based Compensation (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]    
Allocated share based compensation expense $ 1,011 $ 578
Research and development    
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]    
Allocated share based compensation expense 126 14
General and administrative    
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]    
Allocated share based compensation expense $ 885 $ 564