Equity-based compensation - Value Appreciation Rights (Details) - VARs - USD ($)	9 Months Ended	12 Months Ended
	Sep. 30, 2022	Dec. 31, 2021
Number of Units
Outstanding, beginning of period (in shares)	7,190
Exercised (in shares)	(1,587)
Forfeited (in shares)	(1,058)
Outstanding, end of period (in shares)	4,546	7,190
Value appreciation right awards vested and expected to vest (in shares)	2,883
Weighted Average Exercise Price
Outstanding, beginning of period (in dollars per shares)	$ 0.50
Exercised (in dollar per share)	0.50
Forfeited (in dollars per share)	0.50
Outstanding, end of period (in dollars per shares)	0.50	$ 0.50
Value appreciation right awards vested and expected to vest (in dollars per shares)	$ 0.50
Total Intrinsic Value
Outstanding, beginning of period, intrinsic value	$ 136,038
Outstanding, end of period, intrinsic value	25,000	$ 136,038
Value appreciation right awards vested and expected to vest	$ 15,859
Weighted Average Remaining Contractual Life (in years)
Outstanding (in years)	6 years 9 months 18 days	7 years 7 months 6 days
Value appreciation right awards vested and expected to vest (in years)	6 years 9 months 18 days