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Stockholders' Equity - Compensation Expense & Tax Benefit (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Compensation expense for stock options    
Compensation expense $ 273 $ 214
Restricted Stock Units (RSUs)    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Balance of 2022 752  
2023 695  
2024 360  
2025 $ 585