Financing receivable modifications, transfered into restructured loans.

No definition available.

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Namespace Prefix:	bylk_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Financing receivable modifications, transfers from accruing.

+ References

No definition available.

+ Details

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Namespace Prefix:	bylk_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Financing receivable, modifications, transfers out of troubled debt restructurings.

+ References

No definition available.

+ Details

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Balance Type:	credit
Period Type:	duration

- Definition

Financing receivable modifications, transfers to foreclosed properties.

+ References

No definition available.

+ Details

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Namespace Prefix:	bylk_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Financing receivable, modifications, transfers to nonaccrual.

+ References

No definition available.

+ Details

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Namespace Prefix:	bylk_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Financing receivables, troubled debt restructuring, advances.

+ References

No definition available.

+ Details

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Namespace Prefix:	bylk_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Financing receivables, troubled debt restructuring, new restructured.

+ References

No definition available.

+ Details

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Namespace Prefix:	bylk_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Financing receivables, troubled debt restructuring, principal payments.

+ References

No definition available.

+ Details

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Namespace Prefix:	bylk_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Loan removed from restructured status.

+ References

No definition available.

+ Details

Name:	bylk_LoanRemovedFromRestructuredStatus
Namespace Prefix:	bylk_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Number of restructured loans.

+ References

No definition available.

+ Details

Name:	bylk_NumberOfRestructuredLoans
Namespace Prefix:	bylk_
Data Type:	xbrli:positiveIntegerItemType
Balance Type:	na
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- Details

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

- Definition

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

+ References

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

+ Details

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

- Definition

Reflects the amount of the write-down related to a troubled debt restructuring.

+ References

+ Details

Name:	us-gaap_FinancingReceivablesImpairedTroubledDebtRestructuringWriteDown
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
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- Details

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Namespace Prefix:
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- Details

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- Details

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Namespace Prefix:
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- Details

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Namespace Prefix:
Data Type:	na
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- Details

Name:	us-gaap_FinancingReceivableTroubledDebtRestructuringAxis=bylk_AccruingMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancingReceivableTroubledDebtRestructuringAxis=bylk_NonaccrualMember
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Troubled Debt Restructuring (Schedule Of Accrual And Nonaccrual Status Of Troubled Debt Restructuring) (Details) (USD $)	3 Months Ended
	Mar. 31, 2015	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014
Financing Receivable, Modifications [Line Items]
December 31, 2013	$ 8,656,000
Principal payments	(3,000)
New restructured	62,000
Transfers out of TDRs	(1,808,000)
March 31, 2015	6,907,000
Number of restructured loans	1bylk_NumberOfRestructuredLoans
Transferred to restructured status	100,000
Loan removed from restructured status	1,800,000bylk_LoanRemovedFromRestructuredStatus
Construction [Member]
Financing Receivable, Modifications [Line Items]
December 31, 2013
Principal payments
Charge-offs
Advances
New restructured
Transfers out of TDRs
Transfers to foreclosed properties
March 31, 2015
Real Estate - Commercial [Member]
Financing Receivable, Modifications [Line Items]
December 31, 2013	8,640,000
Principal payments	(3,000)
Transfers out of TDRs	(1,792,000)
March 31, 2015	6,845,000
Commercial - Other [Member]
Financing Receivable, Modifications [Line Items]
December 31, 2013	16,000
Principal payments
Charge-offs
Advances
New restructured
Transfers out of TDRs	(16,000)
Transfers to foreclosed properties
March 31, 2015
Consumer [Member]
Financing Receivable, Modifications [Line Items]
December 31, 2013
Principal payments
Charge-offs
Advances
New restructured	62,000
Transfers out of TDRs
Transfers to foreclosed properties
March 31, 2015	62,000
Accruing [Member]
Financing Receivable, Modifications [Line Items]
December 31, 2013	8,656,000	8,656,000	8,472,000	8,370,000
Principal payments	(3,000)
Charge-offs
New restructured	62,000
Transfers out of TDRs	(1,808,000)
March 31, 2015	6,907,000	8,656,000	8,472,000	8,370,000
Accruing [Member] \| Construction [Member]
Financing Receivable, Modifications [Line Items]
December 31, 2013
Principal payments
Charge-offs
Advances
New restructured
Transfers out of TDRs
Transfers to nonaccrual
March 31, 2015
Accruing [Member] \| Real Estate - Mortgage [Member]
Financing Receivable, Modifications [Line Items]
Charge-offs
Accruing [Member] \| Real Estate - Commercial [Member]
Financing Receivable, Modifications [Line Items]
December 31, 2013	8,640,000
Principal payments	(3,000)
Charge-offs
Transfers out of TDRs	(1,792,000)
March 31, 2015	6,845,000
Accruing [Member] \| Commercial - Syndicated [Member]
Financing Receivable, Modifications [Line Items]
Charge-offs
Accruing [Member] \| Commercial - Other [Member]
Financing Receivable, Modifications [Line Items]
December 31, 2013	16,000
Principal payments
Charge-offs
Advances
New restructured
Transfers out of TDRs	(16,000)
Transfers to nonaccrual
March 31, 2015
Accruing [Member] \| Consumer [Member]
Financing Receivable, Modifications [Line Items]
December 31, 2013
Principal payments
Charge-offs
Advances
New restructured	62,000
Transfers out of TDRs
Transfers to nonaccrual
March 31, 2015	62,000
Accruing [Member] \| Municipal Loans [Member]
Financing Receivable, Modifications [Line Items]
Charge-offs
Nonaccrual [Member]
Financing Receivable, Modifications [Line Items]
December 31, 2013		256,000	256,000	255,000
New restructured
March 31, 2015		256,000	256,000	255,000
Nonaccrual [Member] \| Construction [Member]
Financing Receivable, Modifications [Line Items]
December 31, 2013
Principal payments
Charge-offs
Advances
New restructured
Transfers to foreclosed properties
Transfers from accruing
March 31, 2015
Nonaccrual [Member] \| Real Estate - Mortgage [Member]
Financing Receivable, Modifications [Line Items]
New restructured
Nonaccrual [Member] \| Real Estate - Commercial [Member]
Financing Receivable, Modifications [Line Items]
New restructured
Nonaccrual [Member] \| Commercial - Syndicated [Member]
Financing Receivable, Modifications [Line Items]
New restructured
Nonaccrual [Member] \| Commercial - Other [Member]
Financing Receivable, Modifications [Line Items]
December 31, 2013
Principal payments
Charge-offs
Advances
New restructured
Transfers to foreclosed properties
Transfers from accruing
March 31, 2015
Nonaccrual [Member] \| Consumer [Member]
Financing Receivable, Modifications [Line Items]
December 31, 2013
Principal payments
Charge-offs
Advances
New restructured
Transfers to foreclosed properties
Transfers from accruing
March 31, 2015
Nonaccrual [Member] \| Municipal Loans [Member]
Financing Receivable, Modifications [Line Items]
New restructured