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Derivative Financial Instruments - Common stock warrants (Narrative) (Details) $ / shares in Units, $ in Thousands			1 Months Ended		3 Months Ended		9 Months Ended
	Jun. 22, 2023 shares	Oct. 24, 2022 $ / shares shares	Jul. 31, 2023 USD ($) shares	Jun. 30, 2023 USD ($)	Sep. 30, 2024 USD ($)	Sep. 30, 2023 USD ($) shares	Sep. 30, 2024 USD ($)	Sep. 30, 2023 USD ($) shares
Derivative instruments
Stock warrants issued (in shares)		10,349,975
Loss from change in fair value of warrants | $					$ 0	$ 8	$ 0	$ 5,742
Warrant
Derivative instruments
Stock warrants issued (in shares)		10,349,975
Shares of common stock underlying each warrant (in shares)		1
Exercise price of warrants (in dollars per share) | $ / shares		$ 11.50
Period after business combination close in which warrants become exercisable		30 days
Class of warrant or right, warrants exercised (in shares)		461
Warrant Exchange Offer
Derivative instruments
Loss from change in fair value of warrants | $								$ 5,700
Common stock issued in warrant exchange (in shares)	2,471,738
Number of warrants tendered (shares)	9,887,035
Shares of common stock underlying each warrant (in shares)	0.25
Amended Warrant Agreement Offer
Derivative instruments
Shares of common stock underlying each warrant (in shares)	0.225		0.225
Warrants outstanding (in shares)			0			0		0
Fair value settlements | $			$ 700	$ 17,000

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