Name:	us-gaap_DefinedContributionPlanEmployerMatchingContributionPercent
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

Percentage employer matches of the employee's percentage contribution matched.

No definition available.

Name:	us-gaap_DefinedContributionPlanEmployerMatchingContributionPercentOfMatch
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

Indicates line item in statement of financial position that includes operating lease liability.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 842
-SubTopic 20
-Name Accounting Standards Codification
-Section 45
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479041/842-20-45-2

Name:	us-gaap_OperatingLeaseLiabilityStatementOfFinancialPositionExtensibleList
Namespace Prefix:	us-gaap_
Data Type:	enum2:enumerationSetItemType
Balance Type:	na
Period Type:	instant

Indicates line item in statement of financial position that includes operating lease right-of-use asset.

Name:	us-gaap_OperatingLeaseRightOfUseAssetStatementOfFinancialPositionExtensibleList
Namespace Prefix:	us-gaap_
Data Type:	enum2:enumerationSetItemType
Balance Type:	na
Period Type:	instant

Maximum loan-to-value percentage for first mortgages on investment properties.

No definition available.

Name:	wneb_FirstMortgagesMaximumLoanToValuePercentageInvestmentProperties
Namespace Prefix:	wneb_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

Maximum loan-to-value percentage for first mortgages on owner-occupied homes.

No definition available.

Name:	wneb_FirstMortgagesMaximumLoanToValuePercentageOwnerOccupiedHomes
Namespace Prefix:	wneb_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

Maximum loan-to-value percentage for first mortgages on second homes.

No definition available.

Name:	wneb_FirstMortgagesMaximumLoanToValuePercentageSecondHomes
Namespace Prefix:	wneb_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

The minimum loan-to-value ratio at loan origination requiring private mortgage insurance.

No definition available.

Name:	wneb_LoanToValueRatioRequiringPrivateMortgageInsurance
Namespace Prefix:	wneb_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

Number of branches the bank operates by location.

No definition available.

Name:	wneb_NumberOfBankingOfficesInWhichBankOperates
Namespace Prefix:	wneb_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

Maximum percentage of appraised value of property underwritten by residential equity loans and lines.

No definition available.