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Condensed Consolidated Statements of Stockholders' Equity (Unaudited) - USD ($) | Total | Preferred Stock | Common Stock | Capital in Excess of Par | Accumulated Other Comprehensive Loss | Accumulated Deficit | Treasury Stock
--- | --- | --- | --- | --- | --- | --- | ---
Preferred stock, Beginning balance (in shares) at Dec. 31, 2023 |  | 0 |  |  |  |  |
Common stock, Beginning balance (in shares) at Dec. 31, 2023 |  |  | 12,248,313 |  |  |  |
Beginning balance at Dec. 31, 2023 | $ 34,504,139 | $ 0 | $ 122,483 | $ 75,338,010 | $ (12,274,563) | $ (23,114,310) | $ (5,567,481)
Treasury stock, Beginning balance (in shares) at Dec. 31, 2023 |  |  |  |  |  |  | 1,471,406
Ending balance at Jun. 30, 2024 | 40,802,774 | $ 0 | $ 125,361 | 76,042,147 | (12,624,559) | (17,172,694) | $ (5,567,481)
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |
Stock-based compensation | 547,205 |  |  | 547,205 |  |  |
Vesting of restricted stock awards (in shares) |  |  | 234,653 |  |  |  |
Vesting of restricted stock awards | 0 |  | $ 2,346 | (2,346) |  |  |
Shares deducted from restricted stock awards for payment of withholding taxes (in shares) |  |  | (2,946) |  |  |  |
Shares deducted from restricted stock awards for payment of withholding taxes | $ (8,380) |  | $ (29) | (8,351) |  |  |
Exercise of stock options (in shares) | 0 |  |  |  |  |  |
Issuance of common stock, net of offering costs (in shares) |  |  | 56,109 |  |  |  |
Issuance of common stock, net of offering costs | $ 168,190 |  | $ 561 | 167,629 |  |  |
Net income | 5,941,616 |  |  |  |  | 5,941,616 |
(Increase) decrease in unrealized losses on available-for-sale securities, net of tax | (349,996) |  |  |  | (349,996) |  |
Preferred stock, Ending balance (in shares) at Jun. 30, 2024 |  | 0 |  |  |  |  |
Common stock, Ending balance (in shares) at Jun. 30, 2024 |  |  | 12,536,129 |  |  |  |
Treasury stock, Ending balance (in shares) at Jun. 30, 2024 |  |  |  |  |  |  | 1,471,406
Preferred stock, Beginning balance (in shares) at Mar. 31, 2024 |  | 0 |  |  |  |  |
Common stock, Beginning balance (in shares) at Mar. 31, 2024 |  |  | 12,479,422 |  |  |  |
Beginning balance at Mar. 31, 2024 | 35,749,807 | $ 0 | $ 124,794 | 75,595,096 | (12,714,971) | (21,687,631) | $ (5,567,481)
Treasury stock, Beginning balance (in shares) at Mar. 31, 2024 |  |  |  |  |  |  | 1,471,406
Ending balance at Jun. 30, 2024 | 40,802,774 | $ 0 | $ 125,361 | 76,042,147 | (12,624,559) | (17,172,694) | $ (5,567,481)
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |
Stock-based compensation | 281,416 |  |  | 281,416 |  |  |
Vesting of restricted stock awards (in shares) |  |  | 1,026 |  |  |  |
Vesting of restricted stock awards | 0 |  | $ 10 | (10) |  |  |
Shares deducted from restricted stock awards for payment of withholding taxes (in shares) |  |  | (428) |  |  |  |
Shares deducted from restricted stock awards for payment of withholding taxes | (1,988) |  | $ (4) | (1,984) |  |  |
Issuance of common stock, net of offering costs (in shares) |  |  | 56,109 |  |  |  |
Issuance of common stock, net of offering costs | 168,190 |  | $ 561 | 167,629 |  |  |
Net income | 4,514,937 |  |  |  |  | 4,514,937 |
(Increase) decrease in unrealized losses on available-for-sale securities, net of tax | $ 90,412 |  |  |  | 90,412 |  |
Preferred stock, Ending balance (in shares) at Jun. 30, 2024 |  | 0 |  |  |  |  |
Common stock, Ending balance (in shares) at Jun. 30, 2024 |  |  | 12,536,129 |  |  |  |
Treasury stock, Ending balance (in shares) at Jun. 30, 2024 |  |  |  |  |  |  | 1,471,406
Preferred stock, Beginning balance (in shares) at Dec. 31, 2024 |  | 0 |  |  |  |  |
Common stock, Beginning balance (in shares) at Dec. 31, 2024 | 12,924,080 |  | 14,448,205 |  |  |  |
Beginning balance at Dec. 31, 2024 | $ 66,708,451 | $ 0 | $ 144,482 | 89,063,326 | (12,175,476) | (4,755,874) | $ (5,568,007)
Treasury stock, Beginning balance (in shares) at Dec. 31, 2024 | 1,524,125 |  |  |  |  |  | 1,524,125
Ending balance at Jun. 30, 2025 | $ 94,877,892 | $ 0 | $ 156,612 | 98,840,728 | (8,930,559) | 10,379,118 | $ (5,568,007)
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |
Stock-based compensation | 810,867 |  |  | 810,867 |  |  |
Vesting of restricted stock awards (in shares) |  |  | 216,226 |  |  |  |
Vesting of restricted stock awards | 0 |  | $ 2,162 | (2,162) |  |  |
Shares deducted from restricted stock awards for payment of withholding taxes (in shares) |  |  | (35,942) |  |  |  |
Shares deducted from restricted stock awards for payment of withholding taxes | $ (548,500) |  | $ (359) | (548,141) |  |  |
Exercise of stock options (in shares) | 25,422 |  | 48,986 |  |  |  |
Exercise of stock options | $ 57,088 |  | $ 490 | 56,598 |  |  |
Shares deducted from exercise of stock options for payment of withholding taxes (in shares) |  |  | (868) |  |  |  |
Shares deducted from exercise of stock options for payment of withholding taxes | (14,305) |  | $ (9) | (14,296) |  |  |
Issuance of common stock, net of offering costs (in shares) |  |  | 612,999 |  |  |  |
Issuance of common stock, net of offering costs | 9,484,382 |  | $ 6,130 | 9,478,252 |  |  |
Exercise of warrants (in shares) |  |  | 371,634 |  |  |  |
Exercise of warrants | 0 |  | $ 3,716 | (3,716) |  |  |
Net income | 15,134,992 |  |  |  |  | 15,134,992 |
(Increase) decrease in unrealized losses on available-for-sale securities, net of tax | $ 3,244,917 |  |  |  | 3,244,917 |  |
Preferred stock, Ending balance (in shares) at Jun. 30, 2025 |  | 0 |  |  |  |  |
Common stock, Ending balance (in shares) at Jun. 30, 2025 | 14,137,115 |  | 15,661,240 |  |  |  |
Treasury stock, Ending balance (in shares) at Jun. 30, 2025 | 1,524,125 |  |  |  |  |  | 1,524,125
Preferred stock, Beginning balance (in shares) at Mar. 31, 2025 |  | 0 |  |  |  |  |
Common stock, Beginning balance (in shares) at Mar. 31, 2025 |  |  | 15,283,417 |  |  |  |
Beginning balance at Mar. 31, 2025 | $ 82,209,963 | $ 0 | $ 152,834 | 98,450,640 | (9,952,290) | (873,214) | $ (5,568,007)
Treasury stock, Beginning balance (in shares) at Mar. 31, 2025 |  |  |  |  |  |  | 1,524,125
Ending balance at Jun. 30, 2025 | 94,877,892 | $ 0 | $ 156,612 | 98,840,728 | (8,930,559) | 10,379,118 | $ (5,568,007)
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |
Stock-based compensation | 471,857 |  |  | 471,857 |  |  |
Vesting of restricted stock awards (in shares) |  |  | 3,334 |  |  |  |
Vesting of restricted stock awards | 0 |  | $ 33 | (33) |  |  |
Shares deducted from restricted stock awards for payment of withholding taxes (in shares) |  |  | (1,202) |  |  |  |
Shares deducted from restricted stock awards for payment of withholding taxes | (17,620) |  | $ (12) | (17,608) |  |  |
Exercise of stock options (in shares) |  |  | 4,057 |  |  |  |
Exercise of stock options | 939 |  | $ 41 | 898 |  |  |
Exercise of warrants (in shares) |  |  | 371,634 |  |  |  |
Exercise of warrants | 0 |  | $ 3,716 | (3,716) |  |  |
Offering costs on previously issued common stock | (61,310) |  |  | $ (61,310) |  |  |
Net income | 11,252,332 |  |  |  |  | $ 11,252,332 |
(Increase) decrease in unrealized losses on available-for-sale securities, net of tax | $ 1,021,731 |  |  |  | $ 1,021,731 |  |
Preferred stock, Ending balance (in shares) at Jun. 30, 2025 |  | 0 |  |  |  |  |
Common stock, Ending balance (in shares) at Jun. 30, 2025 | 14,137,115 |  | 15,661,240 |  |  |  |
Treasury stock, Ending balance (in shares) at Jun. 30, 2025 | 1,524,125 |  |  |  |  |  | 1,524,125

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