Investments (Narrative) (Details) $ in Thousands	1 Months Ended	3 Months Ended		9 Months Ended
	Apr. 30, 2023 USD ($) plant	Jun. 30, 2023 USD ($)	Mar. 31, 2023 USD ($) investment	Sep. 30, 2023 USD ($)	Sep. 30, 2022 USD ($)	Dec. 31, 2022 USD ($)
Schedule of Equity Method Investments [Line Items]
Payments to acquire equity method investments				$ 18,817	$ 10,000
Equity method investments				21,926		$ 10,218
Number of blocks | plant	2
Number of investment | investment			2
Clean Hydrogen Works, LA-1, L.L.C.
Schedule of Equity Method Investments [Line Items]
Payments to acquire equity method investments	$ 10,000
Equity method investments	$ 20,000			20,000		10,218
Equity method investment, difference between carrying amount and underlying equity				17,700
Libra, CO2 Storage Solutions, LLC
Schedule of Equity Method Investments [Line Items]
Payments to acquire equity method investments		$ 1,500
Equity method investments				$ 1,926		$ 0
Aqualung Carbon Capture AS
Schedule of Equity Method Investments [Line Items]
Payments to acquire other investments			$ 2,000
ION Clean Energy, Inc,
Schedule of Equity Method Investments [Line Items]
Payments to acquire other investments			$ 5,000