Name:	jaxb_AdditionalOutstandingLoansModifiedAsTdrs
Namespace Prefix:	jaxb_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

The amount of charge offs on loans modified under TDR.

No definition available.

Name:	jaxb_ChargeOffsOnLoansModifiedUnderTdrModification
Namespace Prefix:	jaxb_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Allocation of specific reserves to customers whose loans have been modified in troubled debt restructurings.

No definition available.

Name:	jaxb_FinancingReceivableModificationsAllocationOfSpecificReserves
Namespace Prefix:	jaxb_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Allocation of specific reserves to customers whose loans are collateral dependent with collateral shortfalls.

No definition available.

Name:	jaxb_FinancingReceivableModificationsAllocationOfSpecificReservesCollateralDependentLoansWithCollateralShortFalls
Namespace Prefix:	jaxb_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

The amount of the outstanding recorded investment related to financing receivables that were modified but do not meet the definition of a troubled debt restructuring.

No definition available.

Name:	jaxb_FinancingReceivableModificationsNotConsideredTroubledDebtRestructuringsRecordedInvestment
Namespace Prefix:	jaxb_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Increase in allowance for loan losses due to loans undergoing TDR modifications.

No definition available.

Name:	jaxb_IncreaseInAllowanceForLoanAndLeaseLossesDueToTdrModification
Namespace Prefix:	jaxb_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

The amount of the outstanding collateral dependent loans with collateral shortfalls recorded investment by troubled debt restructurings.

No definition available.

Name:	jaxb_TroubledDebtRestructuringCollateralDependentLoansWithCollateralShortfallsRecordedInvestment
Namespace Prefix:	jaxb_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Refers to Troubled Debt Restructurings related to payment default within twelve months.

No definition available.

Name:	jaxb_TroubledDebtRestructuringsRelatedToPaymentDefaultWithinTwelveMonths
Namespace Prefix:	jaxb_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

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.

No definition available.

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

Number of financing receivables that have been modified by troubled debt restructurings.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 33

-URI http://asc.fasb.org/extlink&oid=49124121&loc=SL6953676-111524

Name:	us-gaap_FinancingReceivableModificationsNumberOfContracts2
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

Post-modification amount of investment in financing receivables modified by troubled debt restructurings.

Name:	us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Pre-modification amount of investment in financing receivables modified by troubled debt restructurings.

Name:	us-gaap_FinancingReceivableModificationsPreModificationRecordedInvestment2
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

The amount of the outstanding recorded investment related to financing receivables that have been modified by troubled debt restructurings.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 40

-Section 50

-Paragraph 4

-URI http://asc.fasb.org/extlink&oid=25495931&loc=d3e18845-111554

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

Name:	us-gaap_LoanRestructuringModificationNameAxis=jaxb_CollateralImpairedLoansMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

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

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

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

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

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