LOANS PAYABLE (Details) - USD ($)	12 Months Ended
Apr. 30, 2017	Apr. 30, 2016
Debt Instrument [Line Items]
Carrying Value	$ 178,000	$ 149,000
Estimated Future Payment Within 1 Year	53,000	54,000
Estimated Future Payment After 1 year	$ 125,000	$ 95,000
0% automobile loan payable [Member]
Debt Instrument [Line Items]
Maturity Date	April 2018 - June 2019	April 2018 - May 2019
Stated Interest Rate	0.00%	0.00%
Carrying Value	$ 18,000	$ 25,000
Estimated Future Payment Within 1 Year	9,000	10,000
Estimated Future Payment After 1 year	$ 9,000	$ 15,000
1% automobile loan payable [Member]
Debt Instrument [Line Items]
Maturity Date	November 2022
Stated Interest Rate	1.00%
Carrying Value	$ 23,000
Estimated Future Payment Within 1 Year	5,000
Estimated Future Payment After 1 year	$ 18,000
3% automobile loan payable [Member]
Debt Instrument [Line Items]
Maturity Date	November 2022
Stated Interest Rate	3.00%
Carrying Value	$ 24,000
Estimated Future Payment Within 1 Year	5,000
Estimated Future Payment After 1 year	$ 19,000
4% automobile loan payable [Member]
Debt Instrument [Line Items]
Maturity Date	December 2016 - January 2020	August 2016 - January 2020
Stated Interest Rate	4.00%	4.00%
Carrying Value	$ 25,000	$ 58,000
Estimated Future Payment Within 1 Year	9,000	28,000
Estimated Future Payment After 1 year	$ 16,000	$ 30,000
5% automobile loan payable [Member]
Debt Instrument [Line Items]
Maturity Date	January 2020 - February 2020	January 2020 - February 2020
Stated Interest Rate	5.00%	5.00%
Carrying Value	$ 50,000	$ 66,000
Estimated Future Payment Within 1 Year	17,000	16,000
Estimated Future Payment After 1 year	$ 33,000	$ 50,000
7% automobile loan payable [Member]
Debt Instrument [Line Items]
Maturity Date	June 2019
Stated Interest Rate	7.00%
Carrying Value	$ 23,000
Estimated Future Payment Within 1 Year	5,000
Estimated Future Payment After 1 year	$ 18,000
8% automobile loan payable [Member]
Debt Instrument [Line Items]
Maturity Date	October 2021
Stated Interest Rate	8.00%
Carrying Value	$ 15,000
Estimated Future Payment Within 1 Year	3,000
Estimated Future Payment After 1 year	$ 12,000

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(22))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(16))
-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(16))
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

+ Details

Name:	us-gaap_DebtInstrumentCarryingAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

+ Details

Name:	us-gaap_DebtInstrumentInterestRateStatedPercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt, classified as current. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

+ References

+ Details

Name:	us-gaap_LongTermDebtCurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount after unamortized (discount) premium and debt issuance costs of long-term debt classified as noncurrent and excluding amounts to be repaid within one year or the normal operating cycle, if longer. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

+ References

+ Details

Name:	us-gaap_LongTermDebtNoncurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Description regarding the period in which the debt is going to mature.

+ References

No definition available.

+ Details

Name:	wpcs_DebtInstrumentMaturityPeriod
Namespace Prefix:	wpcs_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	us-gaap_LongtermDebtTypeAxis=wpcs_LoansPayableOneMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LongtermDebtTypeAxis=wpcs_LoansPayableTwoMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LongtermDebtTypeAxis=wpcs_LoansPayableThreeMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LongtermDebtTypeAxis=wpcs_LoansPayableFourMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LongtermDebtTypeAxis=wpcs_LoansPayableFiveMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LongtermDebtTypeAxis=wpcs_LoansPayableSixMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LongtermDebtTypeAxis=wpcs_LoansPayableSevenMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: