Stock-based compensation - Additional Information (Details) - USD ($)	1 Months Ended	3 Months Ended		6 Months Ended		12 Months Ended
	Jan. 31, 2021	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024	Dec. 31, 2024
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Service-based stock options that generally have a contractual life				7 years 10 months 24 days		8 years 4 months 24 days
Unrecognized compensation cost		$ 7,100,000		$ 7,100,000
Weighted-average amortization period				1 year 10 months 24 days
Expected dividend yield				0.00%	0.00%
Stock-based compensation expense		$ 1,035,713	$ 662,321	$ 2,115,795	$ 1,097,984
Stock Options
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Expected dividend yield				0.00%
Stock Options | Maximum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Service-based stock options that generally have a contractual life				10 years
2021 Equity Incentive Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Percentage of increase in number of shares reserved for issuance	4.00%
Common stock were authorized to be issued		3,239,368		3,239,368
Shares were available for future issuance	668,297	170,221		170,221