Income Taxes - Components of Deferred Tax Assets (Liabilities) (Detail) - USD ($) $ in Thousands	Feb. 29, 2016	Feb. 28, 2015
Deferred tax assets:
Deferred revenue	$ 63,357	$ 58,886
Stock-based compensation	6,983	3,344
Reserves and other	4,606	4,294
Research and development credits	6,484	4,935
Net operating losses	12,705	5,431
Total deferred tax assets	94,135	76,890
Valuation allowance	(73,399)	(74,357)
Total deferred tax assets, net of valuation allowance	20,736	2,533
Deferred tax liabilities:
Depreciation and amortization	(14,954)	(3,622)
Prepaid expense and other	(1,151)	(717)
Deferred sales commission	(4,117)	0
Other deferred tax liabilities	0	(231)
Deferred Tax Liabilities, Gross	(20,222)	(4,570)
Net deferred tax assets (liabilities)	$ 514
Net deferred tax assets (liabilities)		$ (2,037)