Balance Sheet Information and Fair Value - Deferred Costs (Detail) - USD ($) $ in Thousands	Feb. 28, 2017	Feb. 29, 2016
Deferred Cost [Line Items]
Total deferred costs	$ 59,883	$ 58,962
Appliance
Deferred Cost [Line Items]
Total deferred costs	39,474	41,548
Commissions
Deferred Cost [Line Items]
Total deferred costs	$ 20,409	$ 17,414