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Contingencies and Guaranty (Details) - USD ($) $ in Thousands	1 Months Ended			3 Months Ended
	Oct. 31, 2022	Sep. 30, 2022	Feb. 28, 2021	Sep. 30, 2023	Mar. 31, 2024	Jun. 30, 2023	Mar. 31, 2023	Jun. 30, 2022	Mar. 31, 2022
Commitments And Contingencies [Line Items]
Contingent liability			$ 20,000
Contingent liability						$ 20,249	$ 20,249
Prepayments received						60,151	$ 60,759	$ 54,343	$ 54,678
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]
Agreement term	20 years
Prepayments received						$ 8,000
SDG&E
Commitments And Contingencies [Line Items]
Consideration transferred			$ 50,000
Forecast
Commitments And Contingencies [Line Items]
Contingent liability					$ 30,000
Forecast | Minimum
Commitments And Contingencies [Line Items]
Change in amount of contingent consideration, liability				$ 800
Forecast | Maximum
Commitments And Contingencies [Line Items]
Change in amount of contingent consideration, liability				$ 1,300

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