Commitments and Contingencies (Tables)

12 Months Ended

Dec. 31, 2024

Commitments and Contingencies Disclosure [Abstract]

Schedule of Changes In Qualifying Facility Liability

The following summarizes the change in the liability (in thousands):

	December 31,
	2024		2023
Beginning QF liability	$	28,670	$	49,728
Settlements	(7,606)		(24,707)
Interest expense	2,434		3,649
Ending QF liability	$	23,498	$	28,670

Schedule of Estimated Gross Contractual Obligation Less Amounts Recoverable Through Rates

The following summarizes the estimated gross contractual obligation less amounts recoverable through rates (in thousands):

	Gross Obligation		Recoverable Amounts		Net
2025	$	60,360	$	52,950	$	7,410
2026	55,393		46,274		9,119
2027	56,665		46,668		9,997
2028	42,400		41,664		736
2029	14,134		18,231		(4,097)
Total(1)	$	228,952	$	205,787	$	23,165

Schedule of Environmental Loss Contingencies by Site

The following summarizes the change in our environmental liability (in thousands):

	December 31,
	2024		2023		2022
Liability at January 1,	$	25,286	$	26,367	$	26,866
Deductions	(2,262)		(2,520)		(2,033)
Charged to costs and expense	705		1,439		1,534
Liability at December 31,	$	23,729	$	25,286	$	26,367