VALUATION AND QUALIFYING ACCOUNTS AND RESERVES (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Allowance for doubtful accounts:
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance, beginning of period	$ 1,172	$ 6,551	$ 5,753
(Credited) charged to expense	3,636	(1,338)	3,594
(Credited) charged to regulatory asset	0	(3,960)	1,628
Accounts written off	(5,179)	(3,874)	(5,479)
Recoveries of accounts written off	1,093	3,793	1,055
Balance, end of period	722	1,172	6,551
Reserve for litigation and claims:
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance, beginning of period	615	1,888	1,768
(Credited) charged to expense	97	206	971
Accounts written off	114	(39)	(166)
Payments	(411)	(1,440)	(685)
Balance, end of period	$ 415	$ 615	$ 1,888