Stock Compensation Information (Summary Of Equity-Based Compensation Expense From Operations) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Oct. 31, 2013	Oct. 31, 2012	Oct. 31, 2013	Oct. 31, 2012
Employee Service Share-based Compensation, Allocation Of Recognized Period Costs [Line Items]
Total equity based compensation	$ 39	$ 154	$ 92	$ 330
Direct Costs Of Revenue [Member]
Employee Service Share-based Compensation, Allocation Of Recognized Period Costs [Line Items]
Total equity based compensation	4	8	9	18
Product Development [Member]
Employee Service Share-based Compensation, Allocation Of Recognized Period Costs [Line Items]
Total equity based compensation	6	23	19	48
Selling, General, And Administrative [Member]
Employee Service Share-based Compensation, Allocation Of Recognized Period Costs [Line Items]
Total equity based compensation	$ 29	$ 123	$ 64	$ 264