SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details 2) (USD $)	3 Months Ended		9 Months Ended
	Jan. 31, 2013	Jan. 31, 2012	Jan. 31, 2013	Jan. 31, 2012
Numerator:
Net loss attributable to WPCS	$ (1,243,331)	$ (8,719,385)	$ (1,854,876)	$ (8,917,738)
Denominator:
Basic and diluted weighted average shares outstanding	6,954,766	6,954,766	6,954,766	6,954,766
Loss from continuing operations attributable to WPCS	$ (0.18)	$ (1.25)	$ (0.26)	$ (1.28)