El Dorado Equity Investments - El Dorado’s Ownership Percentages and Carrying Value of Investments Accounted for Under the Equity Method Investments (Details) - USD ($) $ in Thousands	Sep. 30, 2025	Dec. 31, 2024
Schedule of Equity Method Investments [Line Items]
Total equity method investments	$ 31,000	$ 11,000
SAI
Schedule of Equity Method Investments [Line Items]
Pinnacle West Ownership Percentage as of September 30, 2025	17.00%
Total equity method investments	$ 17,000	0
AZ-VC
Schedule of Equity Method Investments [Line Items]
Pinnacle West Ownership Percentage as of September 30, 2025	23.00%
Total equity method investments	$ 14,000	$ 11,000
Funding commitment	25,000
Funding commitment, amount funded	$ 14,300