Condensed Consolidated Statement of Changes in Stockholders' Equity (Unaudited) (USD $) In Thousands	Total	Common Stock	Treasury Stock	Additional Paid-in Capital	Accumulated Other Comprehensive (Loss)	Accumulated Deficit
Beginning balance at Apr. 30, 2012	$ 93,598	$ 6		$ 158,769	$ (20)	$ (65,157)
Beginning balance, Shares at Apr. 30, 2012		58,780	250
Issuance of stock to acquire PowerReviews	119,695	1		119,694
Issuance of stock to acquire PowerReviews, Shares		6,381
Issuance of common stock (net of issuance costs)	51,943			51,943
Issuance of common stock (net of issuance costs), Shares		3,625
Excess tax benefit related to stock-based compensation	272			272
Stock-based expense	15,933			15,933
Issuance of restricted stock awards		50
Exercise of stock options and vested restricted stock units	6,196			6,196
Exercise of stock options and vested restricted stock units, Shares		2,342
Change in foreign currency translation adjustment	(9)				(9)
Change in unrealized (loss)/gain on investments	23				23
Net loss	(29,781)					(29,781)
Ending balance at Oct. 31, 2012	$ 257,870	$ 7		$ 352,807	$ (6)	$ (94,938)
Ending balance, Shares at Oct. 31, 2012		71,178	250