INTERIM CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS (USD $)	3 Months Ended		9 Months Ended
	Jan. 31, 2015	Jan. 31, 2014	Jan. 31, 2015	Jan. 31, 2014
Net loss for the period	$ (525,083)	$ (2,220,808)	$ (3,027,240)	$ (5,557,327)
Other comprehensive loss:
Foreign currency translation adjustments	(1,682,538)	(433,950)	(2,352,184)	(718,177)
Comprehensive loss	$ (2,207,621)	$ (2,654,758)	$ (5,379,424)	$ (6,275,504)