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Stock-Based Compensation - Stock-based compensation expense (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Stock-based compensation expense $ 1,955 $ 875
Stock options    
Stock-based compensation expense 646 549
Restricted stock units    
Stock-based compensation expense 631 120
Performance stock units    
Stock-based compensation expense 332  
Deferred stock units    
Stock-based compensation expense $ 346 $ 206