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Intangible Assets | 12 Months Ended
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Dec. 31, 2024
Goodwill and Intangible Assets Disclosure [Abstract] |
Intangible Assets | Intangible Assets Utility plant intangible assets consist of $28,386 of indefinite-lived water rights, $13,400 related to the purchase premium for customer relationships, and other intangibles of $9,818 as of December 31, 2024. Other intangibles primarily consist of $4,292 for service area expansions and other by TWC, $1,400 for customer relationships and $1,040 incurred in conjunction with Valley Water water contracts related to the operation of SJWC. In connection with a transaction in the third quarter of 2024, TWC purchased all assets from TWR for use in utility operations. Accordingly, SJW Group reclassified $28,386 related to indefinite life water rights from other intangible assets to utility plant intangible assets. Amortization expense for the intangible assets was $1,429, $1,310 and $3,869 for the years ended December 31, 2024, 2023 and 2022, respectively. Amortization expense for 2025 through 2029 and thereafter is anticipated to be approximately $1,395 per year. The components of intangible assets as of December 31, 2024 and 2023 are as follows:
| 2024 |  | 2023
Utility Plant Intangible Assets: |  |  |
Indefinite-lived water rights | $ | 28,386 |  |  | — |
Purchase premium customer relationships | 13,400 |  |  | 13,400 |
Concession fees | — |  |  | 6,800 |
Other intangibles | 9,818 |  |  | 15,746 |
Utility plant intangible assets | 51,604 |  |  | 35,946 |
Less: Accumulated amortization |  |  |
Purchase premium customer relationships | 4,667 |  |  | 3,774 |
Concession fees | — |  |  | 6,754 |
Other intangibles | 4,858 |  |  | 10,361 |
Utility plant net intangible assets | $ | 42,079 |  |  | 15,057 |
Other Intangible Asset: |  |  |
Indefinite-lived water rights | $ | — |  |  | $ | 28,386 |

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