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Stock Options and Restricted Stock Units - Stock-Based Compensation Expense (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2023
Sep. 30, 2022
Sep. 30, 2023
Sep. 30, 2022
Derivatives, Fair Value        
Total stock-based compensation     $ 2,998 $ 2,370
Equity Plans        
Derivatives, Fair Value        
Direct operating costs $ 85 $ 46 210 154
Selling and administrative expenses 932 759 2,788 2,216
Total stock-based compensation $ 1,017 $ 805 $ 2,998 $ 2,370