Equity-based compensation - Value Appreciation Rights (Details) - VARs - USD ($)	6 Months Ended	12 Months Ended
	Jun. 30, 2022	Dec. 31, 2021
Number of Units
Outstanding, beginning of period (in shares)	359,487
Exercised (in shares)	(79,326)
Forfeited (in shares)	(52,884)
Outstanding, end of period (in shares)	227,277	359,487
Value appreciation right awards vested and expected to vest (in shares)	101,991
Weighted Average Exercise Price
Outstanding, beginning of period (in dollars per shares)	$ 0.01
Exercised (in dollar per share)	0.01
Forfeited (in dollars per share)	0.01
Outstanding, end of period (in dollars per shares)	0.01	$ 0.01
Value appreciation right awards vested and expected to vest (in dollars per shares)	$ 0.01
Total Intrinsic Value
Outstanding, beginning of period, intrinsic value	$ 136,038
Outstanding, end of period, intrinsic value	69,319	$ 136,038
Value appreciation right awards vested and expected to vest	$ 31,107
Weighted Average Remaining Contractual Life (in years)
Outstanding (in years)	7 years	7 years 7 months 6 days
Value appreciation right awards vested and expected to vest (in years)	7 years 3 months 18 days