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Goodwill (Tables) | 12 Months Ended
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Dec. 31, 2019
Goodwill and Intangible Assets Disclosure [Abstract] |
Summary of Carrying Amount of Goodwill | Changes in the carrying amount of goodwill for the years ended December 31, 2018 and 2019 are as follows:
Balance as of January 1, 2018 |  | $ | 15,275,264 |
Business acquisition (see Note 3) |  |  | 10,102,183 |
Balance as of December 31, 2018 |  |  | 25,377,447 |
Business acquisition (see Note 3) |  |  | 3,219,100 |
Balance as of December 31, 2019 |  | $ | 28,596,547 |

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