Valuation and Qualifying Accounts and Reserves (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Allowance for doubtful accounts:
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance, beginning of period	$ 5,753	$ 4,600	$ 3,891
Charged to expense	3,594	1,195	932
Charged to regulatory asset	1,628	265	1,610
Accounts written off	(5,479)	(2,248)	(2,394)
Recoveries of accounts written off	1,055	1,941	561
Balance, end of period	6,551	5,753	4,600
Reserve for litigation and claims:
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance, beginning of period	1,768	607	684
Charged to expense	971	1,583	916
Accounts written off	(166)	(62)	(50)
Payments	(685)	(360)	(943)
Balance, end of period	$ 1,888	$ 1,768	$ 607