Computation of Basic and Diluted Net (Loss) Income Per Share (Detail) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Jun. 30, 2014	Jun. 30, 2013
Basic Net (Loss) Income Per Share
Net (loss) income	$ (1,709)	$ (1,723)
Weighted average shares used in computing basic net (loss) income per share	40,062	38,678
Net (loss) income per share - basic	$ (0.04)	$ (0.04)
Diluted Net (Loss) Income Per Share
Net (loss) income	$ (1,709)	$ (1,723)
Weighted average shares used in computing basic net (loss) income per share	40,062	38,678
Effect of dilutive securities	0	0
Weighted average shares used in computing diluted net (loss) income per share	40,062	38,678
Net (loss) income per share - diluted	$ (0.04)	$ (0.04)