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Note 6 - Intangible Assets and Goodwill | 3 Months Ended
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Mar. 31, 2026
Notes to Financial Statements |
Intangible Asset and Goodwill [Text Block] | NOTE 6 INTANGIBLE ASSETS AND GOODWILL The Company’s intangible assets at March 31, 2026 and December 31, 2025 include the following:
|  | Estimated |  |  |  |  |  |  |  |  |
|  | Economic Life |  |  |  |  |  |  |  |  |
Description |  | (in years) |  |  | March 31, 2026 |  |  | December 31, 2025 |
Developed technologies |  | 10 |  |  | $ | 29,780,018 |  |  | $ | 29,780,018 |
License agreements |  | 10 |  |  |  | 499,952 |  |  |  | 499,952 |
Distribution agreements |  | 8 |  |  |  | 19,733 |  |  |  | 19,733 |
Accumulated amortization |  |  |  |  |  | (6,336,709 | ) |  |  | (5,356,315 | )
Intangible assets, net |  |  |  |  | $ | 23,962,994 |  |  | $ | 24,943,388 |
Accumulated amortization as of March 31, 2026 and December 31, 2025 consisted of the following:
|  | March 31, 2026 |  |  | December 31, 2025 |
Developed technologies |  | $ | 6,084,327 |  |  | $ | 5,116,765 |
License agreements |  |  | 238,146 |  |  |  | 226,063 |
Distribution agreements |  |  | 14,236 |  |  |  | 13,487 |
Accumulated amortization |  | $ | 6,336,709 |  |  | $ | 5,356,315 |
For the three-months ended March 31, 2026 and 2025, amortization expense related to intangible assets was $980,394 and $217,978, respectively. Future minimum amortization expense is as follows at March 31, 2026:
Remainder of 2026 |  | $ | 2,941,185 |
2027 |  |  | 3,921,579 |
2028 |  |  | 3,918,834 |
2029 |  |  | 3,918,582 |
2030 |  |  | 3,918,582 |
Thereafter |  |  | 5,344,232 |
|  | $ | 23,962,994 |
Changes in the intangible assets and goodwill balances for the three-months ended March 31, 2026 and 2025, are presented below:
|  | As of December 31, 2025 |  |  | Additions |  |  | Impairment |  |  | Amortization |  |  | As of March 31, 2026 |
Intangible assets |  | $ | 30,299,703 |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | 30,299,703 |
Accumulated amortization |  |  | (5,356,315 | ) |  |  | — |  |  |  | — |  |  |  | (980,394 | ) |  |  | (6,336,709 | )
Goodwill |  |  | 1,507,154 |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 1,507,154 |
Total intangible assets and goodwill |  | $ | 26,450,542 |  |  | $ | — |  |  | $ | — |  |  | $ | (980,394 | ) |  | $ | 25,470,148 |
|  | As of December 31, 2024 |  |  | Additions |  |  | Impairment |  |  | Amortization |  |  | As of March 31, 2025 |
Intangible assets |  | $ | 8,706,972 |  |  | $ | 180,000 |  |  | $ | — |  |  | $ | — |  |  | $ | 8,886,972 |
Accumulated amortization |  |  | (2,847,820 | ) |  |  | — |  |  |  | — |  |  |  | (217,978 | ) |  |  | (3,065,798 | )
Total intangible assets |  | $ | 5,859,152 |  |  | $ | 180,000 |  |  | $ | — |  |  | $ | (217,978 | ) |  | $ | 5,821,174 |
All intangibles and goodwill are associated with our Fuels Segment.

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- Definition The entire disclosure for intangible asset and goodwill. Includes, but is not limited to, finite- and indefinite-lived intangible assets, capitalized cost for internal-use software and software to be sold, leased, or marketed. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 350 -SubTopic 30 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org/350-30/tableOfContent Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 350 -SubTopic 20 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org/350-20/tableOfContent + Details
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