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Contingencies and Guaranty (Details) $ in Thousands, people in Millions	1 Months Ended	3 Months Ended
	Feb. 28, 2021 USD ($) people	Sep. 30, 2022 USD ($)	Mar. 31, 2024 USD ($)	Dec. 31, 2022 USD ($)	Mar. 31, 2022 USD ($)	Dec. 31, 2020 USD ($)
Commitments And Contingencies [Line Items]
Number of people | people	3.6
Contingent liability	$ 20,000			$ 0	$ 20,000
Contingent liability				20,249	0
Deferred expense						$ 300
Accrued payroll taxes					$ 200
SDG&E | Collaborative Arrangement, Transaction with Party to Collaborative Arrangement
Commitments And Contingencies [Line Items]
Milestone payment received		$ 200
Xcel Energy Services Inc. | Collaborative Arrangement, Transaction with Party to Collaborative Arrangement
Commitments And Contingencies [Line Items]
Potential maximum liability of future undiscounted payments				$ 8,000
SDG&E
Commitments And Contingencies [Line Items]
Consideration transferred	$ 50,000
Forecast
Commitments And Contingencies [Line Items]
Contingent liability			$ 30,000

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Carrying value as of the balance sheet date of obligations incurred and payable for statutory payroll taxes incurred through that date and withheld from employees pertaining to services received from them, including entity's matching share of the employees FICA taxes and contributions to the state and federal unemployment insurance programs.

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