Stock-based compensation - summary of stock options (Details) - $ / shares	12 Months Ended
	Feb. 29, 2024	Feb. 28, 2023	Feb. 28, 2022
Equity [Abstract]
Stock Options outstanding at beginning of period (in shares)	250,759	253,710
Stock Options exercisable at beginning of period (in shares)	133,609	61,690
Weighted Average outstanding at beginning of period (in dollars per share)	$ 4.84	$ 4.46
Weighted Average exercisable at beginning of period (in dollars per share)	$ 4.62	$ 3.53
Weighted average remaining term outstanding	8 years 14 days	8 years 6 months 7 days	8 years 11 months 8 days
Granted (in shares)	73,193	44,739
Granted (in dollars per share)	$ 5.02	$ 5.71
Exercised (in shares)	(19,701)	(16,973)
Exercised (in dollars per share)	$ (3.62)	$ (1.77)
Cancelled (in shares)	(8,709)	(30,717)
Cancelled (in dollars per share)	$ (4.20)	$ (4.66)
Stock Options outstanding at end of period (in shares)	295,542	250,759	253,710
Stock Options exercisable at end of period (in shares)	181,376	133,609	61,690
Weighted Average outstanding at end of period (in dollars per share)	$ 4.99	$ 4.84	$ 4.46
Weighted Average exercisable at end of period (in dollars per share)	$ 4.89	$ 4.62	$ 3.53