Segmented Information (Tables)

6 Months Ended

Oct. 31, 2013

Schedule of Revenue from External Customers Attributed to Foreign Countries by Geographic Area [Table Text Block]

		Three Months Ended				Six Months Ended
		October 31,				October 31,
		2013		2012		2013		2012
North America	$	1,880,466	$	2,263,483	$	3,774,573	$	5,184,000
Europe		286,103		735,177		711,134		1,426,290
Asia and Africa		232,382		276,342		504,502		833,029
Latin America		147,859		287,785		416,088		507,236
	$	2,546,810	$	3,562,787	$	5,406,297	$	7,950,555

Schedule of Long Lived Assets by Geographical Areas [Table Text Block]

		As at
		October 31,		April 30,
		2013		2013
Canada	$	8,547,832	$	8,796,202
United States		69,125		114,879
	$	8,616,957	$	8,911,081

Schedule of Revenue by Major Customers by Reporting Segments [Table Text Block]

	Three Months Ended		Six Months Ended
	October 31,		October 31,
	2013	2012	2013	2012
Customer A	8%	10%	9%	8%
Customer B	7%	1%	4%	9%
	15%	11%	13%	17%