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Intangible Assets
 12 Months Ended
Dec. 31, 2025
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 $9,897 as of December 31, 2025. Other intangibles primarily consist of $4,371 for service area expansions by TWC, $1,400 for customer relationships and $1,040 incurred in conjunction with Valley Water water contracts related to the operation of SJWC.
Amortization expense for the intangible assets was $1,095, $1,429 and $1,310 for the years ended December 31, 2025, 2024 and 2023, respectively. Amortization expense for 2026 through 2030 and thereafter is anticipated to be approximately $1,095 per year.
The components of intangible assets as of December 31, 2025 and 2024 are as follows:
20252024
Utility Plant Intangible Assets:
Indefinite-lived water rights
$28,386 28,386 
Purchase premium customer relationships13,400 13,400 
Other intangibles9,897 9,818 
Utility plant intangible assets51,683 51,604 
Less: Accumulated amortization
Purchase premium customer relationships5,561 4,667 
Other intangibles5,059 4,858 
Utility plant net intangible assets$41,063 42,079