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Statements of Income and Comprehensive Income (Parenthetical) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2022 | Dec. 31, 2021
Operating expenses include stock-based compensation as follows: |  |
Total stock-based compensation | $ 4,408 | $ 3,227
Research and Development |  |
Operating expenses include stock-based compensation as follows: |  |
Total stock-based compensation | 1,704 | 1,280
General and Administrative |  |
Operating expenses include stock-based compensation as follows: |  |
Total stock-based compensation | 2,190 | 1,465
Sales and Marketing |  |
Operating expenses include stock-based compensation as follows: |  |
Total stock-based compensation | $ 514 | $ 482

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