Consolidated Statements of Operations (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Apr. 30, 2014		Apr. 30, 2013		Apr. 30, 2012
Revenue	$ 168,145		$ 146,812		$ 106,136
Cost of revenue	52,905	[1]	47,350	[1]	37,416	[1]
Gross profit	115,240		99,462		68,720
Operating expenses:
Sales and marketing	86,482	[1]	73,114	[1]	49,273	[1]
Research and development	37,585	[1]	32,169	[1]	21,266	[1]
General and administrative	26,370	[1]	30,990	[1]	20,896	[1]
Acquisition-related and other	16,184		10,487
Amortization of acquired intangible assets	1,135		549
Total operating expenses	167,756		147,309		91,435
Operating loss	(52,516)		(47,847)		(22,715)
Other income (expense), net:
Interest income	143		217		17
Other expense	(973)		(1,045)		(820)
Total other expense, net	(830)		(828)		(803)
Loss from continuing operations before income taxes	(53,346)		(48,675)		(23,518)
Income tax expense (benefit)	(500)		(1,172)		811
Net loss from continuing operations	(52,846)		(47,503)		(24,329)
Accretion of redeemable convertible preferred stock					(38)
Net loss from continuing operations attributable to common stockholders	(52,846)		(47,503)		(24,367)
Loss from discontinued operations, net of tax	(10,320)		(16,249)
Net loss applicable to common stockholders	$ (63,166)		$ (63,752)		$ (24,367)
Net loss per share applicable to common stockholders:
Continuing operations	$ (0.70)		$ (0.69)		$ (0.92)
Discontinued operations	$ (0.14)		$ (0.23)
Basic and diluted loss per share	$ (0.84)		$ (0.92)		$ (0.92)
Basic and diluted weighted average number of shares outstanding	75,564		69,336		26,403

[1] Includes stock-based expense as follows: Cost of revenue $ 1,155 $ 677 $ 1,239 Sales and marketing 4,496 3,033 1,881 Research and development 2,817 2,840 1,335 General and administrative 5,357 4,608 3,255