Significant Accounting Policies (Tables)

6 Months Ended

Oct. 31, 2013

Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block]

		October 31,			April 30,
		2013			2013
Balance of allowance for doubtful accounts, beginning of period	$	456,051		$	334,294
Bad debt provision		288,158			265,970
Write-off of receivables		(413,304	)		(144,213	)
Balance of allowance for doubtful accounts, end of period	$	330,905		$	456,051