Net Income (Loss) Per Common Share - Reconciliation Between Denominator of Basic and Diluted Net Income (Loss) Per Common Share (Details) - shares	3 Months Ended		6 Months Ended
	Aug. 31, 2020	Aug. 31, 2019	Aug. 31, 2020	Aug. 31, 2019
Net Income Per Common Share [Abstract]
Weighted-average common shares outstanding (basic)	24,224,478	24,481,477	24,223,935	24,457,482
Restricted stock and stock grants	327,586	0	0	0
Weighted-average common shares and potential common shares outstanding (diluted)	24,552,064	24,481,477	24,223,935	24,457,482