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DISCONTINUED OPERATIONS (Details) (USD $)
3 Months Ended 9 Months Ended
Jan. 31, 2015
Jan. 31, 2014
Jan. 31, 2015
Jan. 31, 2014
REVENUE $ 5,150us-gaap_DisposalGroupIncludingDiscontinuedOperationRevenue $ 3,657,920us-gaap_DisposalGroupIncludingDiscontinuedOperationRevenue $ 4,736,171us-gaap_DisposalGroupIncludingDiscontinuedOperationRevenue $ 13,520,488us-gaap_DisposalGroupIncludingDiscontinuedOperationRevenue
COSTS AND EXPENSES:        
Cost of revenue 4,656us-gaap_DisposalGroupIncludingDiscontinuedOperationCostsOfGoodsSold 2,744,479us-gaap_DisposalGroupIncludingDiscontinuedOperationCostsOfGoodsSold 3,541,977us-gaap_DisposalGroupIncludingDiscontinuedOperationCostsOfGoodsSold 9,844,838us-gaap_DisposalGroupIncludingDiscontinuedOperationCostsOfGoodsSold
Selling, general and administrative expenses 119,367us-gaap_DisposalGroupIncludingDiscontinuedOperationGeneralAndAdministrativeExpense 1,248,533us-gaap_DisposalGroupIncludingDiscontinuedOperationGeneralAndAdministrativeExpense 1,653,998us-gaap_DisposalGroupIncludingDiscontinuedOperationGeneralAndAdministrativeExpense 3,181,675us-gaap_DisposalGroupIncludingDiscontinuedOperationGeneralAndAdministrativeExpense
Depreciation and amortization 216us-gaap_DepreciationAndAmortizationDiscontinuedOperations 70,880us-gaap_DepreciationAndAmortizationDiscontinuedOperations 517,226us-gaap_DepreciationAndAmortizationDiscontinuedOperations 235,386us-gaap_DepreciationAndAmortizationDiscontinuedOperations
Impairment loss on capitalized software 0wpcs_DisposalGroupIncludingDiscontinuedOperationImpairmentLossOnCapitalizedSoftware 0wpcs_DisposalGroupIncludingDiscontinuedOperationImpairmentLossOnCapitalizedSoftware 827,448wpcs_DisposalGroupIncludingDiscontinuedOperationImpairmentLossOnCapitalizedSoftware 0wpcs_DisposalGroupIncludingDiscontinuedOperationImpairmentLossOnCapitalizedSoftware
Disposal Group, Including Discontinued Operation, Operating Expense 124,239us-gaap_DisposalGroupIncludingDiscontinuedOperationOperatingExpense 4,063,892us-gaap_DisposalGroupIncludingDiscontinuedOperationOperatingExpense 6,540,649us-gaap_DisposalGroupIncludingDiscontinuedOperationOperatingExpense 13,261,899us-gaap_DisposalGroupIncludingDiscontinuedOperationOperatingExpense
OPERATING (LOSS) INCOME FROM DISCONTINUED OPERATIONS (119,089)us-gaap_DisposalGroupIncludingDiscontinuedOperationOperatingIncomeLoss (405,972)us-gaap_DisposalGroupIncludingDiscontinuedOperationOperatingIncomeLoss (1,804,478)us-gaap_DisposalGroupIncludingDiscontinuedOperationOperatingIncomeLoss 258,589us-gaap_DisposalGroupIncludingDiscontinuedOperationOperatingIncomeLoss
Interest (income) expense (8,576)us-gaap_DisposalGroupIncludingDiscontinuedOperationInterestExpense 2,607us-gaap_DisposalGroupIncludingDiscontinuedOperationInterestExpense 1,270us-gaap_DisposalGroupIncludingDiscontinuedOperationInterestExpense 5,292us-gaap_DisposalGroupIncludingDiscontinuedOperationInterestExpense
(Loss) income from discontinued operations (110,513)us-gaap_DiscontinuedOperationIncomeLossFromDiscontinuedOperationDuringPhaseOutPeriodNetOfTax (408,579)us-gaap_DiscontinuedOperationIncomeLossFromDiscontinuedOperationDuringPhaseOutPeriodNetOfTax (1,805,748)us-gaap_DiscontinuedOperationIncomeLossFromDiscontinuedOperationDuringPhaseOutPeriodNetOfTax 253,297us-gaap_DiscontinuedOperationIncomeLossFromDiscontinuedOperationDuringPhaseOutPeriodNetOfTax
Gain (loss) from disposal 0us-gaap_DiscontinuedOperationGainLossOnDisposalOfDiscontinuedOperationNetOfTax (104,446)us-gaap_DiscontinuedOperationGainLossOnDisposalOfDiscontinuedOperationNetOfTax 798,896us-gaap_DiscontinuedOperationGainLossOnDisposalOfDiscontinuedOperationNetOfTax (104,446)us-gaap_DiscontinuedOperationGainLossOnDisposalOfDiscontinuedOperationNetOfTax
Gain (loss) from disposal of Stock in Subsidiary   0us-gaap_GainOrLossOnSaleOfStockInSubsidiary   0us-gaap_GainOrLossOnSaleOfStockInSubsidiary
TOTAL (LOSS) INCOME FROM DISCONTINUED OPERATIONS (90,813)us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity (513,025)us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity (1,362,084)us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity 148,851us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity
BTX Trader LLC [Member]        
COSTS AND EXPENSES:        
Gain (loss) from disposal of Stock in Subsidiary 19,700us-gaap_GainOrLossOnSaleOfStockInSubsidiary
/ dei_LegalEntityAxis
= wpcs_BtxTraderLlcMember
0us-gaap_GainOrLossOnSaleOfStockInSubsidiary
/ dei_LegalEntityAxis
= wpcs_BtxTraderLlcMember
19,700us-gaap_GainOrLossOnSaleOfStockInSubsidiary
/ dei_LegalEntityAxis
= wpcs_BtxTraderLlcMember
0us-gaap_GainOrLossOnSaleOfStockInSubsidiary
/ dei_LegalEntityAxis
= wpcs_BtxTraderLlcMember
Seattle Inc [Member]        
COSTS AND EXPENSES:        
Gain (loss) from disposal of Stock in Subsidiary $ 0us-gaap_GainOrLossOnSaleOfStockInSubsidiary
/ dei_LegalEntityAxis
= wpcs_SeattleIncMember
$ 0us-gaap_GainOrLossOnSaleOfStockInSubsidiary
/ dei_LegalEntityAxis
= wpcs_SeattleIncMember
$ (374,932)us-gaap_GainOrLossOnSaleOfStockInSubsidiary
/ dei_LegalEntityAxis
= wpcs_SeattleIncMember
$ 0us-gaap_GainOrLossOnSaleOfStockInSubsidiary
/ dei_LegalEntityAxis
= wpcs_SeattleIncMember