Represents the amount of loans recognized as of the acquisition date.

No definition available.

Name:	bdge_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLoans
Namespace Prefix:	bdge_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Represents the number of families having income producing residential investment properties.

+ References

No definition available.

+ Details

Name:	bdge_LoansAndLeasesReceivableNumberOfFamiliesHavingIncomeProducingResidentialInvestmentProperties
Namespace Prefix:	bdge_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the loan granted against value of subject property expressed as a percentage.

+ References

No definition available.

+ Details

Name:	bdge_LoansAndLeasesReceivablePercentageOfLoanAgainstValueOfSubjectProperty
Namespace Prefix:	bdge_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the threshold amount of a loan for which the entity generally seeks to obtain annual financial information from the borrower.

+ References

No definition available.

+ Details

Name:	bdge_LoansAndLeasesReceivableThresholdAmountReportingRequirement
Namespace Prefix:	bdge_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

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

- References

No definition available.

+ Details

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

- Definition

Fair value portion of loan receivable, including, but not limited to, mortgage loans held for investment, finance receivables held for investment, policy loans on insurance contracts.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-URI http://asc.fasb.org/subtopic&trid=2196772

+ Details

Name:	us-gaap_LoansReceivableFairValueDisclosure
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Details

Name:	us-gaap_BusinessAcquisitionAxis=bdge_CommunityNationalBankMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_BusinessAcquisitionAxis=bdge_FirstNationalBankOfNewYorkMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancingReceivablePortfolioSegmentAxis=us-gaap_CommercialRealEstatePortfolioSegmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis=us-gaap_MortgageReceivablesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancingReceivablePortfolioSegmentAxis=bdge_ResidentialRealEstatePortfolioSegmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_HomeEquityMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_RangeAxis=srt_MinimumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancingReceivablePortfolioSegmentAxis=bdge_MultiFamilyPortfolioSegmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_RangeAxis=srt_MaximumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

LOANS (Detail Textuals)	6 Months Ended
LOANS (Detail Textuals)	Jun. 30, 2018 USD ($) Family	Dec. 31, 2017 USD ($)	Jun. 19, 2015 USD ($)	Feb. 14, 2014 USD ($)
CNB
Classifications of loans
Addition in acquired loans recorded at fair value			$ 729,400,000
Fair value of loans acquired	$ 303,800,000	$ 359,400,000
FNBNY
Classifications of loans
Addition in acquired loans recorded at fair value				$ 89,700,000
Fair value of loans acquired	13,200,000	$ 15,400,000
Commercial real estate \| Mortgage loans
Lending Risk
Loan amount beyond which annual financial information is sought	$ 250,000
Residential real estate \| Mortgage loans \| Home equity \| Minimum
Lending Risk
Loan-to-value ratio (as a percent)	80.00%
Multi-Family \| Mortgage loans
Lending Risk
Number of families having income producing residential investment properties \| Family	5
Multi-Family \| Mortgage loans \| Maximum
Lending Risk
Loan-to-value ratio (as a percent)	75.00%