Income taxes (Details) - USD ($)	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Income Tax Disclosure [Abstract]
Income tax provision (benefit)	$ 1,003,000	$ 0	$ 1,003,000	$ 0	$ 0
Effective tax rate			(1.00%)