Name:	jaxb_ImpairedLoanReceivablesAndRealEstateOwnedValuationAllowance
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Amount of the period expense for valuation allowance that is charged against earnings in the period for impaired loan receivables and other real estate owned.

No definition available.

Name:	jaxb_ImpairedLoanReceivablesAndRealEstateOwnedValuationAllowanceProvision
Namespace Prefix:	jaxb_
Data Type:	xbrli:monetaryItemType
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Period Type:	duration

Name:	jaxb_Level3AssetsOtherDisclosuresAbstract
Namespace Prefix:	jaxb_
Data Type:	xbrli:stringItemType
Balance Type:	na
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Reflects the outstanding balance of loans that have been determined to be impaired and other real estate owned by entity.

No definition available.

Name:	jaxb_LoansAndLeasesReceivableImpairedAndOreo
Namespace Prefix:	jaxb_
Data Type:	xbrli:monetaryItemType
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Period Type:	instant

Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 820

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=25499696&loc=d3e19207-110258

Name:	us-gaap_AssetsFairValueDisclosure
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Data Type:	xbrli:monetaryItemType
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Period Type:	instant

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Data Type:	xbrli:stringItemType
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Percentage of adjustment to the observed price for a similar asset or liability when an identical transaction does not exist, used as an input to measure fair value.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 820

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (bbb)

-URI http://asc.fasb.org/extlink&oid=25499696&loc=d3e19207-110258

Name:	us-gaap_FairValueInputsComparabilityAdjustments
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
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Adjustment to the discount rate used to measure fair value for lack of ability to convert business interests into cash quickly.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 820

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (bbb)

-URI http://asc.fasb.org/extlink&oid=25499696&loc=d3e19207-110258

Name:	us-gaap_FairValueInputsDiscountForLackOfMarketability
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

Name:	us-gaap_FairValueByAssetClassAxis=jaxb_ImpairedLoansMember
Namespace Prefix:
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