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Stockholders' Equity | 6 Months Ended
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Jun. 30, 2023
Equity [Abstract] |
Stockholders' Equity | (7) Stockholders’ Equity The changes in stockholders’ equity are as follows:
|  | Three months ended June 30, |  |  | Six months ended June 30, |
|  | 2022 |  |  | 2023 |  |  | 2022 |  |  | 2023 |
Beginning balance |  | $ | 259,689,019 |  |  | $ | 220,100,965 |  |  | $ | 263,082,298 |  |  | $ | 223,488,808 |
Stock-based compensation |  |  | 378,830 |  |  |  | 181,339 |  |  |  | 606,080 |  |  |  | 355,607 |
Purchase of treasury stock |  |  | (76,108 | ) |  |  | (42,222 | ) |  |  | (105,707 | ) |  |  | (67,767 | )
Net loss |  |  | (14,454,717 | ) |  |  | (10,430,629 | ) |  |  | (18,045,647 | ) |  |  | (13,967,195 | )
Ending balance |  | $ | 245,537,024 |  |  | $ | 209,809,453 |  |  | $ | 245,537,024 |  |  | $ | 209,809,453 |

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