Condensed Consolidated Statements of Operations (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Jul. 31, 2014	Jul. 31, 2013
Revenue	$ 45,977	$ 40,319
Cost of revenue	16,356	12,117
Gross profit	29,621	28,202
Operating expenses:
Sales and marketing	20,995	20,996
Research and development	9,730	8,924
General and administrative	7,893	8,536
Acquisition-related and other	492	7,504
Amortization of acquired intangible assets	309	282
Total operating expenses	39,419	46,242
Operating loss	(9,798)	(18,040)
Other income (expense), net:
Interest income	6	66
Other expense	(504)	(63)
Total other income (expense), net	(498)	3
Loss from continuing operations before income taxes	(10,296)	(18,037)
Income tax expense (benefit)	12	(391)
Net loss from continuing operations	(10,308)	(17,646)
Income (loss) from discontinued operations, net of tax	(1,257)	278
Net loss applicable to common stockholders	$ (11,565)	$ (17,368)
Net loss per share applicable to common stockholders:
Continuing operations	$ (0.13)	$ (0.23)
Discontinued operations	$ (0.02)
Basic and diluted loss per share	$ (0.15)	$ (0.23)
Basic and diluted weighted average number of shares outstanding	77,766	73,983