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Investments - Narrative (Details) $ / shares in Units, ¥ in Thousands				3 Months Ended		6 Months Ended		12 Months Ended
	May 13, 2020 USD ($) shares	Sep. 28, 2011 USD ($)	Sep. 28, 2011 CNY (¥)	Jun. 30, 2024 USD ($)	Jun. 30, 2023 USD ($)	Jun. 30, 2024 USD ($)	Jun. 30, 2023 USD ($)	Dec. 31, 2023 USD ($)	Jun. 18, 2024 shares	Nov. 09, 2022 $ / shares
Schedule of Equity Method Investments [Line Items]
Allowance for credit losses related to held-to-maturity securities				$ 0		$ 0		$ 0
Equity method investments cost						0	$ 288,000
Class of warrant or right, exercise price of warrants or rights (usd per share) | $ / shares										$ 0.01
Impairment on equity method investments						0		0
Dividends from equity investments				0	$ 0	0	0
LanzaJet
Schedule of Equity Method Investments [Line Items]
Contribution of intellectual property	$ 15,000,000
Ownership percentage	37.50%								37.01%
Contingent right to receive additional interest (in shares) | shares	45,000,000								15,000,000
Equity method investments cost	$ 0
Revenue				8,541,000	565,000	9,121,000	1,119,000
Deferred revenue				8,062,000		$ 8,062,000		5,375,000
Profit amortization period						15 years
Class of warrant or right, exercise price of warrants or rights (usd per share) | $ / shares										$ 0.01
Gain from equity method investment				0	502,000	$ 77,000	502,000
Carrying value less than proportionate share of book value				2,800,000		2,800,000		$ 2,800,000
LanzaJet | Intra-entity
Schedule of Equity Method Investments [Line Items]
Revenue				$ 3,101,000	$ 89,000	$ 3,193,000	$ 206,000
SGLT
Schedule of Equity Method Investments [Line Items]
Ownership percentage		30.00%	30.00%	9.31%		9.31%
SGLT | Intellectual Property
Schedule of Equity Method Investments [Line Items]
Contribution of intellectual property		$ 4,000,000	¥ 25,800

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