REGULATORY ASSETS AND LIABILTIES (Tables)

12 Months Ended

Dec. 31, 2024

Regulated Operations [Abstract]

Schedule of regulatory assets and liabilities

Regulatory assets and liabilities were comprised of the following as of December 31:

	Recovery Period	2024		2023
Regulatory Assets
Property-related temporary differences (tax benefits flowed through to customers)	Indefinite	$	178,279	$	158,486
IRMA long-term accounts receivable	Various	46,278		3,430
Asset retirement obligations, net	Indefinite	28,883		26,686
Other accrued benefits	Indefinite	25,439		25,363
Tank coating	Various	21,477		19,602
MWRAM long-term regulatory asset	1-2 years	16,353		—
Customer assistance program (CAP) and Rate support fund (RSF) accounts receivable	1 year	9,910		2,459
General district balancing account receivable	Various	9,393		390
Incremental cost balancing accounts (ICBA)	1 year	8,251		—
Net WRAM and MCBA long-term accounts receivable	Various	3,633		10,738
Recoverable property losses	Various	2,633		3,121
PCBA	Various	—		4,182
Other regulatory assets	Various	6,877		3,164
Total Regulatory Assets		$	357,406	$	257,621
Regulatory Liabilities
Cost of removal		$	483,108	$	447,356
Pension and retiree group health		174,708		88,728
Future tax benefits due to customers		106,184		118,051
Other components of net periodic benefit cost		18,287		10,348
PCBA		14,143		8,972
ICBA		6,003		—
HCBA		3,630		3,242
CEBA		3,294		1,200
Net WRAM and MCBA long-term payable		3,064		2,071
RSF regulatory liability		—		2,116
Other regulatory liabilities		2,130		1,633
Total Regulatory Liabilities		$	814,551	$	683,717