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Regulatory Assets and Liabilities (Details) - USD ($) $ in Thousands |  | 9 Months Ended |
--- | --- | --- | ---
Oct. 14, 2020 | Sep. 30, 2020 | Dec. 31, 2019
Regulatory Assets and Liabilities |  |  |
Total Regulatory Assets |  | $ 484,435 | $ 433,322
Total Regulatory Liabilities |  | 193,939 | 211,413
Short-term portion of the regulatory assets |  | 54,415 | 38,225
Short-term portion of the regulatory liabilities |  | 11,003 | 4,462
Property-related temporary differences (tax benefits flowed through to customers) |  |  |
Regulatory Assets and Liabilities |  |  |
Total Regulatory Liabilities |  | 173,048 | 194,501
HCBA |  |  |
Regulatory Assets and Liabilities |  |  |
Total Regulatory Liabilities |  | 7,407 | 4,271
CEBA |  |  |
Regulatory Assets and Liabilities |  |  |
Total Regulatory Liabilities |  | 2,926 | 2,742
Net WRAM and MCBA long-term payable |  |  |
Regulatory Assets and Liabilities |  |  |
Total Regulatory Liabilities |  | 374 | 211
Tax accounting memorandum account |  |  |
Regulatory Assets and Liabilities |  |  |
Total Regulatory Liabilities |  | 711 | 806
Cost of capital memorandum account |  |  |
Regulatory Assets and Liabilities |  |  |
Total Regulatory Liabilities |  | 15 | 151
1,2,3 trichloropropane (TCP) settlement proceeds |  |  |
Regulatory Assets and Liabilities |  |  |
Total Regulatory Liabilities |  | 9,084 | 8,426
Other regulatory liabilities |  |  |
Regulatory Assets and Liabilities |  |  |
Total Regulatory Liabilities |  | 374 | 305
Pension and retiree group health |  |  |
Regulatory Assets and Liabilities |  |  |
Total Regulatory Assets |  | 207,828 | 208,321
Property-related temporary differences (tax benefits flowed through to customers) |  |  |
Regulatory Assets and Liabilities |  |  |
Total Regulatory Assets |  | 107,962 | 104,931
Other accrued benefits |  |  |
Regulatory Assets and Liabilities |  |  |
Total Regulatory Assets |  | 21,434 | 20,030
Net WRAM and MCBA long-term accounts receivable |  |  |
Regulatory Assets and Liabilities |  |  |
Total Regulatory Assets |  | 40,036 | 25,465
Asset retirement obligations, net |  |  |
Regulatory Assets and Liabilities |  |  |
Total Regulatory Assets |  | $ 21,018 | 19,567
Interim rates long-term accounts receivable |  |  |
Regulatory Assets and Liabilities |  |  |
Recovery Period |  | 1 year |
Total Regulatory Assets |  | $ 21,672 | 4,642
Tank coating |  |  |
Regulatory Assets and Liabilities |  |  |
Recovery Period |  | 10 years |
Total Regulatory Assets |  | $ 14,209 | 13,535
Recoverable property losses |  |  |
Regulatory Assets and Liabilities |  |  |
Recovery Period |  | 10 years |
Total Regulatory Assets |  | $ 4,775 | 5,000
PCBA |  |  |
Regulatory Assets and Liabilities |  |  |
Recovery Period |  | 1 year |
Total Regulatory Assets |  | $ 32,819 | 21,465
Other components of net periodic benefit cost |  |  |
Regulatory Assets and Liabilities |  |  |
Total Regulatory Assets |  | 6,316 | 5,145
Other regulatory assets |  |  |
Regulatory Assets and Liabilities |  |  |
Total Regulatory Assets |  | $ 6,366 | $ 5,221
Minimum | Net WRAM and MCBA 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 |
2020 - 2021 | Subsequent Event |  |  |
Regulatory Assets and Liabilities |  |  |
Investments in Capital Improvements | $ 828,000 |  |
Revenue requirement threshold | 698,700 |  |
2020 - 2021 | Subsequent Event | Water System Infrastructure |  |  |
Regulatory Assets and Liabilities |  |  |
Investments in Capital Improvements | $ 148,000 |  |

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