Consolidated Statements of Comprehensive Loss - USD ($) $ in Thousands	12 Months Ended
	Feb. 29, 2016	Feb. 28, 2015	Feb. 28, 2014
Statement of Comprehensive Income [Abstract]
Net loss attributable to Barracuda Networks, Inc.	$ (4,422)	$ (67,498)	$ (3,626)
Other comprehensive income (loss), net of tax:
Change in net foreign currency translation adjustment	(669)	(3,408)	352
Available-for-sale investments:
Change in net unrealized gain (loss) (net of tax effect of $0, $5 and $13)	403	(8)	(19)
Less: reclassification adjustment for net gains included in net loss (net of tax effect of $5, $0 and $23)	(10)	0	(38)
Net change	393	(8)	(57)
Other comprehensive income (loss)	(276)	(3,416)	295
Comprehensive loss attributable to Barracuda Networks, Inc.	$ (4,698)	$ (70,914)	$ (3,331)