Equity-based compensation - Stock Options and Restricted Stock Units (Details) - USD ($)	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021	Dec. 31, 2021
Stock Options
Shares Underlying Options
Outstanding, beginning of period (in shares)			2,696,473
Granted	1,704,000	0	1,704,000	0
Forfeited			(38,833)
Outstanding, end of period (in shares)	4,361,640		4,361,640		2,696,473
Exercisable, end of period (in shares)	574,738		574,738
Weighted Average Exercise Price
Outstanding, beginning of period (in dollars per share)			$ 1.09
Granted			0.31
Forfeited			2.87
Outstanding, end of period (in dollars per share)	$ 0.77		0.77		$ 1.09
Exercisable, end of period	$ 1.24		$ 1.24
Weighted Average Remaining Contractual Term (Years)
Outstanding, end of period (in years)			9 years 4 months 24 days		9 years 7 months 6 days
Exercisable, end of period (in years)			9 years
Aggregate intrinsic value	$ 13,632		$ 13,632
Restricted Stock Units
Shares Underlying Options
Granted	450,000		450,000
Vested			(74,998)
Outstanding, end of period (in shares)	375,002		375,002
Weighted Average Exercise Price
Granted			$ 0.31
Vested			0.31
Outstanding, end of period (in dollars per share)	$ 0.31		$ 0.31
Weighted Average Remaining Contractual Term (Years)
Outstanding, end of period (in years)			9 months 18 days
Granted (in years)			1 year
Aggregate intrinsic value	$ 116,251		$ 116,251
Aggregate intrinsic value, Granted	$ 139,500		$ 139,500