Components of Income Tax Provision (Benefit) (Detail) - USD ($) $ in Thousands	12 Months Ended
	Feb. 28, 2018	Feb. 28, 2017	Feb. 29, 2016
Current:
Federal	$ (1,209)	$ 0	$ 0
State	1,611	68	(31)
Current Income Tax Expense (Benefit), Total	402	68	(31)
Deferred:
Federal	(13,612)	(152)	1,793
State	1,478	(26)	307
Deferred Income Taxes and Tax Credits, Total	(12,134)	(178)	2,100
(Benefit) provision for income taxes	$ (11,732)	$ (110)	$ 2,069