Significant Accounting Policies (Tables)

9 Months Ended

Jan. 31, 2015

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

		January 31,			April 30,
		2015			2014
Balance of allowance for doubtful accounts, beginning of
period/year	$	240,681		$	456,051
Bad debt provision		544,111			415,448
Write-off of receivables		(444,564	)		(630,818	)
Balance of allowance for doubtful accounts, end of period/year	$	340,228		$	240,681