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REGULATORY ASSETS AND LIABILTIES (Tables) | 12 Months Ended
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Dec. 31, 2020
Regulated Operations [Abstract] |
Schedule of regulatory assets and liabilities | Regulatory assets and liabilities were comprised of the following as of December 31:
| Recovery Period |  | 2020 |  | 2019
Regulatory Assets |  |  |  |  |
Pension and retiree group health | Indefinitely |  | $ | 59,588 |  |  | $ | 208,321 |
Property-related temporary differences (tax benefits flowed through to customers) | Indefinitely |  | 120,365 |  |  | 104,931 |
Other accrued benefits | Indefinitely |  | 21,692 |  |  | 20,030 |
Net WRAM and MCBA long-term accounts receivable | 1-2 years |  | 33,136 |  |  | 25,465 |
Asset retirement obligations, net | Indefinitely |  | 21,110 |  |  | 19,567 |
IRMA long-term accounts receivable | 1-2 years |  | 14,705 |  |  | 4,642 |
Tank coating | 10 years |  | 14,018 |  |  | 13,535 |
Recoverable property losses | 9 years |  | 4,531 |  |  | 5,000 |
PCBA | 1 year |  | 19,647 |  |  | 21,465 |
Other components of net periodic benefit cost | Indefinitely |  | 6,736 |  |  | 5,145 |
General district balancing account receivable | 1 year |  | 1,830 |  |  | 425 |
Low-income rate assistance (LIRA) and Rate support fund (RSF) accounts receivable | 1 year |  | 5,310 |  |  | 787 |
Other regulatory assets | Various |  | 2,708 |  |  | 4,009 |
Total Regulatory Assets |  |  | $ | 325,376 |  |  | $ | 433,322 |
Regulatory Liabilities |  |  |  |  |
Future tax benefits due to customers |  |  | $ | 151,011 |  |  | $ | 194,501 |
Retiree group health |  |  | 18,472 |  |  | — |
HCBA |  |  | 5,320 |  |  | 4,271 |
Conservation program |  |  | 3,837 |  |  | 2,742 |
Net WRAM and MCBA long-term payable |  |  | 479 |  |  | 211 |
1,2,3 trichloropropane settlement proceeds |  |  | — |  |  | 8,426 |
Other regulatory liabilities |  |  | 1,599 |  |  | 1,262 |
Total Regulatory Liabilities |  |  | $ | 180,718 |  |  | $ | 211,413 |
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