Income Taxes - Components of Provision for Income Taxes (Detail) - USD ($) $ in Thousands	12 Months Ended
	Feb. 28, 2018	Feb. 28, 2017	Feb. 29, 2016
Current:
Federal	$ 14,001	$ 10,543	$ 16,086
State and local	1,944	2,254	2,502
Total current	15,945	12,797	18,588
Deferred:
Federal	(1,811)	932	342
State and local	17	(113)	(147)
Total deferred	(1,794)	819	195
Total provision for income taxes	$ 14,151	$ 13,616	$ 18,783