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Stock Options and Restricted Stock Units - Stock-Based Compensation Expense (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2023
Mar. 31, 2022
Derivatives, Fair Value    
Total stock-based compensation $ 962 $ 537
Equity Plans    
Derivatives, Fair Value    
Direct operating costs 63 52
Selling and administrative expenses 899 485
Total stock-based compensation $ 962 $ 537