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Summary of significant accounting policies - Derivative instruments- common stock warrants (Details) - shares	Jun. 22, 2023	Dec. 31, 2023	Jul. 31, 2023	Jun. 22, 2022
Warrant Exchange Offer
Basin acquisition that met the definition of a business combination
Warrants tendered (in shares)	2,471,738
Number of warrants tendered (in shares)	9,887,035
Shares of common stock underlying each warrant (in shares)	0.25			0.25
Amended Warrant Agreement Offer
Basin acquisition that met the definition of a business combination
Shares of common stock underlying each warrant (in shares)	0.225	0.225	0.225	0.225
Warrants outstanding (in shares)		0	0

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