Share-based compensation - Options - General Information (Details)	1 Months Ended								12 Months Ended
	Apr. 30, 2024 USD ($) installment $ / shares shares	Mar. 31, 2024 USD ($) installment $ / shares shares	Apr. 30, 2023 USD ($) installment $ / shares shares	Mar. 31, 2023 USD ($) installment $ / shares shares	May 31, 2022 USD ($) installment $ / shares shares	Apr. 30, 2022 USD ($) installment $ / shares shares	Mar. 31, 2022 USD ($) installment $ / shares shares	Jan. 31, 2022 USD ($)	Dec. 31, 2024 USD ($) $ / shares shares	Dec. 31, 2023 USD ($)
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Granted (in shares) | shares									697,629
Granted (in dollars per share)									$ 1.46
Weighted average grant date fair value, granted (in dollars per share)									$ 0.82
Awards Issued March 2022
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Granted (in shares) | shares							98,747
Granted (in dollars per share)							$ 3.07
Weighted average grant date fair value, granted (in dollars per share)							$ 1.43
Awards Issued April 2022
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Granted (in shares) | shares						97,371
Granted (in dollars per share)						$ 2.52
Weighted average grant date fair value, granted (in dollars per share)						$ 1.18
Awards Issued May 2022
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Granted (in shares) | shares					159,881
Granted (in dollars per share)					$ 2.26
Weighted average grant date fair value, granted (in dollars per share)					$ 1.07
Awards Issued March 2023
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Granted (in shares) | shares				158,976
Granted (in dollars per share)				$ 2.08
Weighted average grant date fair value, granted (in dollars per share)				$ 1.26
Awards Issued April 2023
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Granted (in shares) | shares			106,341
Granted (in dollars per share)			$ 1.74
Weighted average grant date fair value, granted (in dollars per share)			$ 1.06
Awards Issued March 2024
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Granted (in shares) | shares		529,635
Granted (in dollars per share)		$ 1.50
Weighted average grant date fair value, granted (in dollars per share)		$ 0.84
Awards Issued April 2024
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Granted (in shares) | shares	167,994
Granted (in dollars per share)	$ 1.32
Weighted average grant date fair value, granted (in dollars per share)	$ 0.75
Vested (in shares) | shares									0
Employee Stock Option
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Fair value of options awarded | $									$ 573,163	$ 313,423
Employee Stock Option | Awards Issued March 2022
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Contractual life							10 years
Fair value of options awarded | $							$ 141,401
Vested (in shares) | shares									90,518
Employee Stock Option | Awards Issued March 2022 | Share-Based Payment Arrangement, Tranche One
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Vesting rights (as a percent)							33.33%
Vesting period							1 year
Employee Stock Option | Awards Issued March 2022 | Share-Based Payment Arrangement, Tranche Two
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Vesting rights, successive equal monthly installments | installment							24
Employee Stock Option | Awards Issued March 2022 | Share-Based Payment Arrangement, Tranche Two Through Twenty-Five
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Vesting rights (as a percent)							2.78%
Employee Stock Option | Awards Issued April 2022
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Contractual life						10 years
Fair value of options awarded | $						$ 114,972
Vested (in shares) | shares									86,552
Employee Stock Option | Awards Issued April 2022 | Share-Based Payment Arrangement, Tranche One
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Vesting rights (as a percent)						33.33%
Vesting period						1 year
Employee Stock Option | Awards Issued April 2022 | Share-Based Payment Arrangement, Tranche Two
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Vesting rights, successive equal monthly installments | installment						24
Employee Stock Option | Awards Issued April 2022 | Share-Based Payment Arrangement, Tranche Two Through Twenty-Five
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Vesting rights (as a percent)						2.78%
Employee Stock Option | Awards Issued May 2022
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Contractual life					10 years
Fair value of options awarded | $					$ 171,462
Vested (in shares) | shares									137,675
Employee Stock Option | Awards Issued May 2022 | Share-Based Payment Arrangement, Tranche One
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Vesting rights (as a percent)					33.33%
Vesting period					1 year
Employee Stock Option | Awards Issued May 2022 | Share-Based Payment Arrangement, Tranche Two
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Vesting rights, successive equal monthly installments | installment					24
Employee Stock Option | Awards Issued May 2022 | Share-Based Payment Arrangement, Tranche Two Through Twenty-Five
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Vesting rights (as a percent)					2.78%
Employee Stock Option | Awards Issued March 2023
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Contractual life				10 years
Fair value of options awarded | $				$ 201,000
Vested (in shares) | shares									0
Employee Stock Option | Awards Issued March 2023 | Share-Based Payment Arrangement, Tranche One
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Vesting rights (as a percent)				33.33%
Vesting period				1 year
Employee Stock Option | Awards Issued March 2023 | Share-Based Payment Arrangement, Tranche Two
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Vesting rights, successive equal monthly installments | installment				24
Employee Stock Option | Awards Issued March 2023 | Share-Based Payment Arrangement, Tranche Two Through Twenty-Five
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Vesting rights (as a percent)				2.78%
Employee Stock Option | Awards Issued April 2023
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Contractual life			10 years
Fair value of options awarded | $			$ 112,423
Vested (in shares) | shares									59,078
Employee Stock Option | Awards Issued April 2023 | Share-Based Payment Arrangement, Tranche One
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Vesting rights (as a percent)				33.33%
Vesting period			1 year
Employee Stock Option | Awards Issued April 2023 | Share-Based Payment Arrangement, Tranche Two
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Vesting rights, successive equal monthly installments | installment			24
Employee Stock Option | Awards Issued April 2023 | Share-Based Payment Arrangement, Tranche Two Through Twenty-Five
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Vesting rights (as a percent)				2.78%
Employee Stock Option | Awards Issued March 2024
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Contractual life		10 years
Fair value of options awarded | $		$ 447,000
Vested (in shares) | shares									0
Employee Stock Option | Awards Issued March 2024 | Share-Based Payment Arrangement, Tranche One
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Vesting rights (as a percent)		33.33%
Vesting period		1 year
Employee Stock Option | Awards Issued March 2024 | Share-Based Payment Arrangement, Tranche Two
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Vesting rights, successive equal monthly installments | installment		24
Employee Stock Option | Awards Issued March 2024 | Share-Based Payment Arrangement, Tranche Two Through Twenty-Five
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Vesting rights (as a percent)		2.78%
Employee Stock Option | Awards Issued April 2024
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Contractual life	10 years
Fair value of options awarded | $	$ 126,163
Employee Stock Option | Awards Issued April 2024 | Share-Based Payment Arrangement, Tranche One
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Vesting rights (as a percent)	33.33%
Vesting period	1 year
Employee Stock Option | Awards Issued April 2024 | Share-Based Payment Arrangement, Tranche Two
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Vesting rights, successive equal monthly installments | installment	24
Employee Stock Option | Awards Issued April 2024 | Share-Based Payment Arrangement, Tranche Two Through Twenty-Five
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Vesting rights (as a percent)	2.78%
Restricted Stock Units (RSUs) | Awards Issued January 2022
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Fair value of options awarded | $								$ 716,625
Vesting period								3 years
Restricted Stock Units (RSUs) | Awards Issued January 2022 | Share-Based Payment Arrangement, Tranche One
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Percentage of award								33.33%
Restricted Stock Units (RSUs) | Awards Issued January 2022 | Share-Based Payment Arrangement, Tranche Two Through Twenty-Five
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Percentage of award								2.78%
Restricted Stock Units (RSUs) | Awards Issued April 2022
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Fair value of options awarded | $						$ 22,050
Restricted Stock Units (RSUs) | Awards Issued April 2022 | Share-Based Payment Arrangement, Tranche One
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Vesting period						1 year
Percentage of award						33.33%
Restricted Stock Units (RSUs) | Awards Issued April 2022 | Share-Based Payment Arrangement, Tranche Two
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Vesting rights, successive equal monthly installments | installment						24
Restricted Stock Units (RSUs) | Awards Issued April 2022 | Share-Based Payment Arrangement, Tranche Two Through Twenty-Five
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Percentage of award						2.78%
Restricted Stock Units (RSUs) | Awards Issued May 2022
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Fair value of options awarded | $					$ 198,000
Restricted Stock Units (RSUs) | Awards Issued March 2023
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Fair value of options awarded | $				$ 201,000
Restricted Stock Units (RSUs) | Awards Issued March 2024
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Fair value of options awarded | $		$ 620,031
Restricted Stock Units (RSUs) | Awards Issued April 2024
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Fair value of options awarded | $	$ 20,000