Components of Deferred Tax Assets and Deferred Tax Liabilities (Detail) - USD ($) $ in Thousands	Feb. 28, 2018	Feb. 28, 2017
Deferred tax assets:
Net operating loss carryforwards	$ 10,977	$ 35,365
Intangible assets	14,072	22,130
Compensation relating to stock options	1,600	1,942
Deferred revenue	0	420
Accrued rent	1,204	1,892
Tax credits	1,464	3,438
Investments in subsidiairies	143	396
Other	332	993
Valuation allowance	(27,099)	(60,379)
Total deferred tax assets	2,693	6,197
Deferred tax liabilities
Indefinite-lived intangible assets	(31,383)	(43,505)
Property and equipment	(483)	(814)
Cancellation of debt income	(1,839)	(5,386)
Other	(391)	(29)
Total deferred tax liabilities	(34,096)	(49,734)
Net deferred tax liabilities	$ (31,403)	$ (43,537)