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Intangible assets and liabilities other than goodwill (Tables) | 12 Months Ended
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Dec. 31, 2024
Intangible Assets, Net (Excluding Goodwill) [Abstract] |
Schedule of Finite-Lived Intangible Assets | Intangible assets and liabilities at December 31, 2024 and 2023 consist of the following:
|  | December 31, 2024 |  | December 31, 2023
Intangible assets |  | Cost |  | Accumulated Amortization |  | Net |  | Cost |  | Accumulated Amortization |  | Net
Product certifications |  | $ | 777,465 |  |  | $ | (709,855) |  |  | $ | 67,610 |  |  | $ | 777,465 |  |  | $ | (658,676) |  |  | $ | 118,789 |
Patents |  | 888,910 |  |  | (584,493) |  |  | 304,417 |  |  | 888,910 |  |  | (496,807) |  |  | 392,103 |
Developed technology |  | 240,000 |  |  | (188,000) |  |  | 52,000 |  |  | 240,000 |  |  | (172,000) |  |  | 68,000 |
Trademarks |  | 26,896 |  |  | — |  |  | 26,896 |  |  | 26,896 |  |  | — |  |  | 26,896 |
In process R&D |  | 263,936 |  |  | (141,394) |  |  | 122,542 |  |  | 263,936 |  |  | (103,689) |  |  | 160,247 |
Favorable contract assets |  | 384,465 |  |  | (379,839) |  |  | 4,626 |  |  | 384,465 |  |  | (376,139) |  |  | 8,326 |
Customer contract |  | $ | 2,225,123 |  |  | $ | (290,025) |  |  | 1,935,098 |  |  | $ | 1,772,659 |  |  | $ | (110,791) |  |  | 1,661,868 |
|  | $ | 4,806,795 |  |  | $ | (2,293,606) |  |  | $ | 2,513,189 |  |  | $ | 4,354,331 |  |  | $ | (1,918,102) |  |  | $ | 2,436,229 |
Intangible liability |  |  |  |  |  |  |  |  |  |  |  |
Unfavorable contract liability |  | $ | 2,618,168 |  |  | $ | (2,195,329) |  |  | $ | 422,839 |  |  | $ | 2,618,168 |  |  | $ | (2,019,122) |  |  | $ | 599,046 |
Schedule of Estimated Future Amortization Expense | Aggregate future amortization over the next five years is estimated to be as follows:
|  | Non-contract related intangibles |  | Contract related intangibles |  | Total
2025 |  | $ | 169,754 |  |  | $ | 79,042 |  |  | $ | 248,796 |
2026 |  | 168,244 |  |  | 124,483 |  |  | 292,727 |
2027 |  | 167,936 |  |  | 131,199 |  |  | 299,135 |
2028 |  | 23,278 |  |  | 137,208 |  |  | 160,486 |
2029 |  | 5,786 |  |  | 137,208 |  |  | 142,994 |
Thereafter |  | 11,571 |  |  | 907,745 |  |  | 919,316 |
|  | $ | 546,569 |  |  | $ | 1,516,885 |  |  | $ | 2,063,454 |

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