Common stock and additional paid-in capital - Schedule of Nonvested Stock Option Activity (Details) - $ / shares	2 Months Ended	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2023	Oct. 31, 2022	Oct. 31, 2021
Number
Non-vested beginning balance (in shares)	1,257,364	1,246,789	1,053,847	2,822,515
Granted during the period (in shares)	0	1,088,500	763,829	2,320,989
Vested during the period (in shares)	(10,575)	(466,188)	(557,693)	(3,910,062)
Forfeited during the period (in shares)	0	(114,352)	(2,619)	(179,595)
Non-vested ending balance (in shares)	1,246,789	1,754,749	1,257,364	1,053,847
Weighted average grant date fair value
Non-vested beginning balance (in dollars per share)	$ 5.58	$ 5.56	$ 6.68	$ 0.44
Granted during the period (in dollars per share)		3.33	4.87	3.59
Vested during the period (in dollars per share)	7.88	5.69	6.42	0.60
Forfeited during the period (in dollars per share)	0	5.88	6.68	0.75
Non-vested ending balance (in dollars per share)	$ 5.56	$ 4.12	$ 5.58	$ 6.68