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Stock-Based Compensation (Details) - USD ($) | 12 Months Ended
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Dec. 31, 2019 | Dec. 31, 2018
Stock-based compensation expenses | $ 519,891 | $ 487,806
Total remaining unamortized stock-based compensation cost not yet recognized | $ 967,893 | 906,605
Total compensation cost not yet recognized, Period for recognition | 2 years 8 months 2 days |
Cost of revenues |  |
Stock-based compensation expenses | $ 94,803 | 81,141
Research and development |  |
Stock-based compensation expenses | 151,121 | 128,552
Sales and marketing |  |
Stock-based compensation expenses | 121,633 | 126,312
General and administrative |  |
Stock-based compensation expenses | $ 152,334 | $ 151,801

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