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v3.25.0.1

Long-Term Debt - Narrative (Details) - USD ($) $ in Thousands |  | 1 Months Ended |  |  |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Aug. 14, 2023 | Aug. 31, 2023 | Dec. 31, 2024 | Dec. 06, 2024 | Jul. 31, 2024 | Dec. 31, 2023 | Nov. 15, 2023 | Feb. 06, 2023 | Jul. 14, 2022
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Fair value of long-term debt |  |  | $ 1,490,024 |  |  | $ 1,394,412 |  |  |
KT Water Resource L. P. |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Asset acquisition, post-closing production payment | $ 29,000 |  |  |  |  |  |  |  |
Asset acquisition, period of post-closing production payment | 29 years |  |  |  |  |  |  |  |
SJWC | Senior notes | 4.85% Senior Note, Series P |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Aggregate principal amount |  |  |  |  |  |  |  |  | $ 70,000
Rate |  |  |  |  |  |  |  |  | 4.85%
SJWC | Senior notes | 5.63% Senior Note, Series Q |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Aggregate principal amount |  |  |  |  | $ 75,000 |  |  |  |
Rate |  |  |  |  | 5.63% |  |  |  |
CWC | Senior notes | 6.46% Senior Notes, Series 2023 |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Aggregate principal amount |  |  |  |  |  |  | $ 25,000 |  |
Rate |  |  |  |  |  |  | 6.46% |  |
CWC | Senior notes | 5.78% Senior Note, Series 2024 |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Aggregate principal amount |  |  |  |  | $ 50,000 |  |  |  |
Rate |  |  |  |  | 5.78% |  |  |  |
TWR | KT Water Resource L. P. |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Asset acquisition, post-closing production payment |  | $ 29,000 |  |  |  |  |  |  |
TWC | Bank term loans | 6.473% due on November 20, 2054 |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Rate |  |  |  | 6.47% |  |  |  |  |
Line Limit |  |  |  | $ 20,000 |  |  |  |  |
MWC | Bank term loans | 6.473% due on November 20, 2054 |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Rate |  |  |  | 6.47% |  |  |  |  |
Line Limit |  |  |  | $ 15,000 |  |  |  |  |
CTWS | Bank term loans |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Rate |  |  |  |  |  |  |  | 4.09% |
Significant Observable Inputs (Level 2) |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Fair value of long-term debt |  |  | 1,473,393 |  |  | 1,378,683 |  |  |
Significant Unobservable Inputs (Level 3) |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Fair value of long-term debt |  |  | $ 16,631 |  |  | $ 15,729 |  |  |

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