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Regulatory Assets and Liabilities - Schedule of Regulatory Assets and Liabilities (Details) - USD ($) $ in Thousands | 3 Months Ended |
--- | --- | ---
Mar. 31, 2022 | Dec. 31, 2021
Regulatory Assets and Liabilities |  |
Total Regulatory Assets | $ 291,577 | $ 285,692
Total Regulatory Liabilities | 181,827 | 180,428
Future tax benefits due to customers |  |
Regulatory Assets and Liabilities |  |
Total Regulatory Liabilities | 134,378 | 135,027
Retiree group health |  |
Regulatory Assets and Liabilities |  |
Total Regulatory Liabilities | 27,294 | 27,294
HCBA |  |
Regulatory Assets and Liabilities |  |
Total Regulatory Liabilities | 11,355 | 9,687
CEBA |  |
Regulatory Assets and Liabilities |  |
Total Regulatory Liabilities | 7,395 | 7,206
Net WRAM and MCBA long-term payable |  |
Regulatory Assets and Liabilities |  |
Total Regulatory Liabilities | 262 | 143
Other regulatory liabilities |  |
Regulatory Assets and Liabilities |  |
Total Regulatory Liabilities | 1,143 | 1,071
Pension and retiree group health |  |
Regulatory Assets and Liabilities |  |
Total Regulatory Assets | 17,443 | 17,607
Future tax benefits due to customers |  |
Regulatory Assets and Liabilities |  |
Total Regulatory Assets | 130,565 | 130,565
Other accrued benefits |  |
Regulatory Assets and Liabilities |  |
Total Regulatory Assets | 24,644 | 23,280
Net WRAM and MCBA long-term accounts receivable |  |
Regulatory Assets and Liabilities |  |
Total Regulatory Assets | 39,013 | 29,789
Asset retirement obligations, net |  |
Regulatory Assets and Liabilities |  |
Total Regulatory Assets | 23,467 | 22,935
Interim rates memorandum account (IRMA) long-term accounts receivable |  |
Regulatory Assets and Liabilities |  |
Total Regulatory Assets | $ 7,972 | 9,032
Tank coating |  |
Regulatory Assets and Liabilities |  |
Recovery Period | 10 years |
Total Regulatory Assets | $ 14,347 | 13,680
Recoverable property losses |  |
Regulatory Assets and Liabilities |  |
Total Regulatory Assets | $ 3,666 | 3,843
PCBA |  |
Regulatory Assets and Liabilities |  |
Recovery Period | 1 year |
Total Regulatory Assets | $ 20,877 | 21,500
Other components of net periodic benefit cost |  |
Regulatory Assets and Liabilities |  |
Total Regulatory Assets | $ 2,091 | 3,342
General district balancing account receivable |  |
Regulatory Assets and Liabilities |  |
Recovery Period | 1 year |
Total Regulatory Assets | $ 618 | 568
Customer assistance program (CAP) and Rate support fund (RSF) accounts receivable |  |
Regulatory Assets and Liabilities |  |
Recovery Period | 1 year |
Total Regulatory Assets | $ 3,392 | 5,991
Other regulatory assets |  |
Regulatory Assets and Liabilities |  |
Total Regulatory Assets | $ 3,482 | $ 3,560
Minimum | Net WRAM and MCBA long-term accounts receivable |  |
Regulatory Assets and Liabilities |  |
Recovery Period | 1 year |
Minimum | Interim rates memorandum account (IRMA) long-term accounts receivable |  |
Regulatory Assets and Liabilities |  |
Recovery Period | 1 year |
Maximum | Net WRAM and MCBA long-term accounts receivable |  |
Regulatory Assets and Liabilities |  |
Recovery Period | 2 years |
Maximum | Interim rates memorandum account (IRMA) long-term accounts receivable |  |
Regulatory Assets and Liabilities |  |
Recovery Period | 3 years |

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- Definition Amortization period for the recovery of regulatory asset, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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