BASIC AND DILUTED NET (LOSS) INCOME PER COMMON SHARE (Details) - USD ($)	3 Months Ended		6 Months Ended
	Oct. 31, 2016	Oct. 31, 2015	Oct. 31, 2016	Oct. 31, 2015
Numerator:
(Loss) income from continuing operations attributable to WPCS common shareholders	$ (438,685)	$ (2,823,466)	$ 118,496	$ (7,030,226)
Income from discontinued operations, basic and diluted	0	837,720	0	(878,981)
Net (loss) income attributable to WPCS common shareholders, basic and diluted	$ (438,685)	$ (1,985,746)	$ 118,496	$ (6,167,750)
Denominator:
Weighted average shares outstanding - basic	2,854,230	2,415,113	2,777,817	1,942,681
Stock options	0	0	99,783	0
Series H and H-1 convertible preferred stock	0	0	913,200	0
Weighted average shares outstanding - diluted	2,854,230	2,415,113	3,790,800	1,942,681
Basic (loss) income from continuing operations per common share	$ (0.15)	$ (1.17)	$ 0.04	$ (3.62)
Basic income from discontinued operations per common share	0	0.35	0	0.44
Basic (loss) income per common share	(0.15)	(0.82)	0.04	(3.18)
Diluted (loss) income from continuing operations per common share	(0.15)	(1.17)	0.03	(3.62)
Diluted income from discontinued operations per common share	0	0.35	0	0.44
Diluted (loss) income per common share	$ (0.15)	$ (0.82)	$ 0.03	$ (3.18)