Net Income (Loss) Per Common Share - Reconciliation Between Denominator of Basic and Diluted Net Income (Loss) Per Common Share (Details) - shares	3 Months Ended		9 Months Ended
	Nov. 30, 2020	Nov. 30, 2019	Nov. 30, 2020	Nov. 30, 2019
Net Income Per Common Share [Abstract]
Weighted-average common shares outstanding (basic)	24,197,786	24,418,313	24,196,393	24,458,926
Restricted stock and stock grants	479,739	207,097	335,936	0
Weighted-average common shares and potential common shares outstanding (diluted)	24,677,525	24,625,410	24,532,329	24,458,926