XML 47 R35.htm IDEA: XBRL DOCUMENT v2.4.0.6
Summary of Significant Accounting Policies (Details) (USD $)
12 Months Ended
Apr. 30, 2012
Apr. 30, 2011
Summary of Significant Accounting Policies [Line Items]    
Advertising Expense $ 14,000 $ 7,000
Percent of Revenue 51.00% 51.00%
Allowance for Doubtful Accounts Receivable, Current $ 12,000 $ 11,000