Summary of Significant Accounting Policies (Details Textual) (USD $)	12 Months Ended
	Apr. 30, 2013	Apr. 30, 2012
Estimated Fair Value of Warrants	$ 1,046,000	$ 555,000
Allowance for Doubtful Accounts Receivable	19,000	14,000
Unbilled Receivables, Current	200,000	104,000
Restricted Cash and Cash Equivalents, Noncurrent	192,000	150,000
Depreciation, Total	203,000	105,000
Advertising Expense	$ 50,000	$ 135,000