Schedule of Revenue from External Customers Attributed to Foreign Countries by Geographic Area (Details) (USD $)	6 Months Ended
	Oct. 31, 2013
Segmented Information Schedule Of Revenue From External Customers Attributed To Foreign Countries By Geographic Area 1	$ 1,880,466
Segmented Information Schedule Of Revenue From External Customers Attributed To Foreign Countries By Geographic Area 2	2,263,483
Segmented Information Schedule Of Revenue From External Customers Attributed To Foreign Countries By Geographic Area 3	3,774,573
Segmented Information Schedule Of Revenue From External Customers Attributed To Foreign Countries By Geographic Area 4	5,184,000
Segmented Information Schedule Of Revenue From External Customers Attributed To Foreign Countries By Geographic Area 5	286,103
Segmented Information Schedule Of Revenue From External Customers Attributed To Foreign Countries By Geographic Area 6	735,177
Segmented Information Schedule Of Revenue From External Customers Attributed To Foreign Countries By Geographic Area 7	711,134
Segmented Information Schedule Of Revenue From External Customers Attributed To Foreign Countries By Geographic Area 8	1,426,290
Segmented Information Schedule Of Revenue From External Customers Attributed To Foreign Countries By Geographic Area 9	232,382
Segmented Information Schedule Of Revenue From External Customers Attributed To Foreign Countries By Geographic Area 10	276,342
Segmented Information Schedule Of Revenue From External Customers Attributed To Foreign Countries By Geographic Area 11	504,502
Segmented Information Schedule Of Revenue From External Customers Attributed To Foreign Countries By Geographic Area 12	833,029
Segmented Information Schedule Of Revenue From External Customers Attributed To Foreign Countries By Geographic Area 13	147,859
Segmented Information Schedule Of Revenue From External Customers Attributed To Foreign Countries By Geographic Area 14	287,785
Segmented Information Schedule Of Revenue From External Customers Attributed To Foreign Countries By Geographic Area 15	416,088
Segmented Information Schedule Of Revenue From External Customers Attributed To Foreign Countries By Geographic Area 16	507,236
Segmented Information Schedule Of Revenue From External Customers Attributed To Foreign Countries By Geographic Area 17	2,546,810
Segmented Information Schedule Of Revenue From External Customers Attributed To Foreign Countries By Geographic Area 18	3,562,787
Segmented Information Schedule Of Revenue From External Customers Attributed To Foreign Countries By Geographic Area 19	5,406,297
Segmented Information Schedule Of Revenue From External Customers Attributed To Foreign Countries By Geographic Area 20	$ 7,950,555