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Regulatory Assets and Liabilities - Schedule of Regulatory Assets and Liabilities (Details) - USD ($) $ in Thousands | 3 Months Ended |
--- | --- | ---
Mar. 31, 2023 | Dec. 31, 2022
Regulatory Assets and Liabilities |  |
Total Regulatory Assets | $ 293,263 | $ 283,620
Total Regulatory Liabilities | 213,350 | 213,679
Future tax benefits due to customers |  |
Regulatory Assets and Liabilities |  |
Total Regulatory Liabilities | 131,155 | 131,155
Pension and retiree group health |  |
Regulatory Assets and Liabilities |  |
Total Regulatory Liabilities | 58,678 | 58,678
PCBA |  |
Regulatory Assets and Liabilities |  |
Total Regulatory Liabilities | 1,999 | 0
HCBA |  |
Regulatory Assets and Liabilities |  |
Total Regulatory Liabilities | 15,312 | 14,318
CEBA |  |
Regulatory Assets and Liabilities |  |
Total Regulatory Liabilities | 860 | 6,036
Net WRAM and MCBA long-term payable |  |
Regulatory Assets and Liabilities |  |
Total Regulatory Liabilities | 262 | 172
Other components of net periodic benefit cost |  |
Regulatory Assets and Liabilities |  |
Total Regulatory Liabilities | 4,059 | 2,475
Other regulatory liabilities |  |
Regulatory Assets and Liabilities |  |
Total Regulatory Liabilities | 1,025 | 845
Retiree group health |  |
Regulatory Assets and Liabilities |  |
Total Regulatory Assets | 0 | 171
Future tax benefits due to customers |  |
Regulatory Assets and Liabilities |  |
Total Regulatory Assets | 143,546 | 143,546
Other accrued benefits |  |
Regulatory Assets and Liabilities |  |
Total Regulatory Assets | 25,974 | 24,946
Net WRAM and MCBA long-term accounts receivable |  |
Regulatory Assets and Liabilities |  |
Total Regulatory Assets | 49,243 | 41,558
Asset retirement obligations, net |  |
Regulatory Assets and Liabilities |  |
Total Regulatory Assets | 25,335 | 24,548
Interim rates memorandum account (IRMA) long-term accounts receivable |  |
Regulatory Assets and Liabilities |  |
Total Regulatory Assets | 3,533 | 3,682
Tank coating |  |
Regulatory Assets and Liabilities |  |
Total Regulatory Assets | 16,507 | 16,395
Recoverable property losses |  |
Regulatory Assets and Liabilities |  |
Total Regulatory Assets | 2,998 | 3,144
PCBA |  |
Regulatory Assets and Liabilities |  |
Total Regulatory Assets | $ 19,233 | 19,091
General district balancing account receivable |  |
Regulatory Assets and Liabilities |  |
Recovery Period | 1 year |
Total Regulatory Assets | $ 383 | 377
Customer assistance program (CAP) and Rate support fund (RSF) accounts receivable |  |
Regulatory Assets and Liabilities |  |
Recovery Period | 1 year |
Total Regulatory Assets | $ 3,402 | 2,965
Other regulatory assets |  |
Regulatory Assets and Liabilities |  |
Total Regulatory Assets | $ 3,109 | $ 3,197
Minimum | Interim rates memorandum account (IRMA) long-term accounts receivable |  |
Regulatory Assets and Liabilities |  |
Recovery Period | 1 year |
Maximum | Interim rates memorandum account (IRMA) long-term accounts receivable |  |
Regulatory Assets and Liabilities |  |
Recovery Period | 2 years |

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