XML 89 R68.htm IDEA: XBRL DOCUMENT v3.23.1
Stock-Based Compensation - Stock-based compensation expense (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2023
Mar. 31, 2022
Stock-based compensation expense $ 597 $ 774
Deferred stock units    
Stock-based compensation expense 357 577
Restricted stock units    
Stock-based compensation expense 153 48
Stock options    
Stock-based compensation expense 120 $ 149
Performance stock units    
Stock-based compensation expense $ (33)