Investments (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2024	Mar. 31, 2024	Dec. 31, 2023	Jun. 30, 2023	Mar. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Investments in and Advances to Affiliates [Line Items]
Investments	$ 20,427	$ 20,386	$ 17,354	$ 16,718	$ 13,902	$ 14,286
Kodiak
Investments in and Advances to Affiliates [Line Items]
Investments	12,279		8,538
CarbonFree
Investments in and Advances to Affiliates [Line Items]
Investments	$ 6,798		6,850				$ 5,000
Deferred conversion period	2 years
Ownership percentage	1.00%
Standard Lithium
Investments in and Advances to Affiliates [Line Items]
Investments	$ 1,000		1,616
Other Investments
Investments in and Advances to Affiliates [Line Items]
Investments	$ 350		$ 350