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Goodwill and Other Intangible Assets | 9 Months Ended
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Sep. 30, 2023
Goodwill and Other Intangible Assets [Abstract] |
Goodwill and Other Intangible Assets | Note 9—Goodwill and Other Intangible Assets The table below reconciles the change in the carrying amount of goodwill for the period from January 1, 2023 to September 30, 2023:
|  | GRE |  |  | Genie Renewables |  |  | Total |
|  | (in thousands) |
Balance at January 1, 2023 |  | $ | 9,998 |  |  | $ | — |  |  | $ | 9,998 |
Additions/deductions during the period |  |  | — |  |  |  | — |  |  |  | — |
Balance at September 30, 2023 |  | $ | 9,998 |  |  | $ | — |  |  | $ | 9,998 |
The table below presents information on the Company’s other intangible assets:
|  | Weighted Average Amortization Period |  |  | Gross Carrying Amount |  |  | Accumulated Amortization |  |  | Net Balance |
|  | (in thousands) |
September 30, 2023 |  |  |  |  |  |  |  |  |  |  |  |
Patents and trademarks |  |  | 18.1 years |  |  | $ | 3,510 |  |  | $ | (1,325 | ) |  | $ | 2,185 |
Customer relationships |  |  | 9.0 years |  |  |  | 1,100 |  |  |  | (744 | ) |  |  | 356 |
Licenses |  |  | 10.0 years |  |  |  | 479 |  |  |  | (186 | ) |  |  | 293 |
Total |  |  |  |  |  | $ | 5,089 |  |  | $ | (2,255 | ) |  | $ | 2,834 |
December 31, 2022 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Patent and trademark |  |  | 18.1 years |  |  | $ | 3,510 |  |  | $ | (1,154 | ) |  | $ | 2,356 |
Customer relationships |  |  | 9.0 years |  |  |  | 1,100 |  |  |  | (652 | ) |  |  | 448 |
Licenses |  |  | 10.0 years |  |  |  | 479 |  |  |  | (150 | ) |  |  | 329 |
Total |  |  |  |  |  | $ | 5,089 |  |  | $ | (1,956 | ) |  | $ | 3,133 |
Amortization expense of intangible assets was $0.1 million and $0.3 million in the three and nine months ended September 30, 2023, respectively. Amortization expense of intangible assets was $0.1 million and $0.3 million in the three and nine months ended September 30, 2022, respectively. The Company estimates that amortization expense of intangible assets will be $0.1 million, $0.4 million, $0.4 million, $0.3 million, $0.3 million and $1.4 million for the remainder of 2023, and for 2024, 2025, 2026, 2027 and thereafter, respectively.

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- Definition The entire disclosure for goodwill and intangible assets. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 350 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org//350/tableOfContent + Details
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