Impaired financing receivable average recorded balance.

No definition available.

Name:	lnbb_ImpairedFinancingReceivableAverageRecordedBalance
Namespace Prefix:	lnbb_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Impaired financing receivable with no related allowance average recorded balance.

+ References

No definition available.

+ Details

Name:	lnbb_ImpairedFinancingReceivableWithNoRelatedAllowanceAverageRecordedBalance
Namespace Prefix:	lnbb_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Impaired financing receivable with no related allowance related allowance.

+ References

No definition available.

+ Details

Name:	lnbb_ImpairedFinancingReceivableWithNoRelatedAllowanceRelatedAllowance
Namespace Prefix:	lnbb_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Impaired financing receivable with related allowance average recorded balance.

+ References

No definition available.

+ Details

Name:	lnbb_ImpairedFinancingReceivableWithRelatedAllowanceAverageRecordedBalance
Namespace Prefix:	lnbb_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Impaired financing receivable with related allowance related allowance.

+ References

No definition available.

+ Details

Name:	lnbb_ImpairedFinancingReceivableWithRelatedAllowanceRelatedAllowance
Namespace Prefix:	lnbb_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Details

Name:	lnbb_ImpairedLoansWithAllowanceRecordedAbstract
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Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	lnbb_ImpairedLoansWithNoRelatedAllowanceRecordedAbstract
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Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 14A

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=7512638&loc=SL6953550-111524

+ Details

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

- Definition

Amount of allowance for credit losses related to recorded investment.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 15

-Subparagraph (a)(3)

-URI http://asc.fasb.org/extlink&oid=7512638&loc=d3e5212-111524

+ Details

Name:	us-gaap_ImpairedFinancingReceivableRelatedAllowance
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of unpaid principal balance of impaired financing receivables with related allowance for credit losses and without related allowance for credit losses.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 15

-Subparagraph (a)(4)

-URI http://asc.fasb.org/extlink&oid=7512638&loc=d3e5212-111524

+ Details

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

- Definition

Amount of investment in impaired financing receivables for which there is no related allowance for credit losses.

+ References

+ Details

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

- Definition

Amount of unpaid principal balance of impaired financing receivables for which there is no related allowance for credit losses.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 15

-Subparagraph (a)(4)

-URI http://asc.fasb.org/extlink&oid=7512638&loc=d3e5212-111524

+ Details

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

- Definition

Amount of investment in impaired financing receivables for which there is a related allowance for credit losses.

+ References

+ Details

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

- Definition

Unpaid principal balance of impaired financing receivables for which there is a related allowance for credit losses.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 15

-Subparagraph (a)(4)

-URI http://asc.fasb.org/extlink&oid=7512638&loc=d3e5212-111524

+ Details

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

Loans and Allowance for Loan Losses (Details 2) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011	Dec. 31, 2011
With allowance recorded:
Recorded Investment, Total	$ 29,569		$ 29,569		$ 33,592
Unpaid Principal Balance, Total	36,962		36,962		43,110
Related Allowance, Total	3,298		3,298		3,932
Average Recorded Balance, Total	30,667	40,574	30,971	42,769
Commercial Real Estate [Member]
With no related allowance recorded:
Recorded Investment	8,241		8,241		12,585
Unpaid Principal Balance	12,981		12,981		20,138
Average Recorded Balance	9,121	10,575	9,758	9,609
With allowance recorded:
Recorded Investment	19,861		19,861		19,161
Unpaid Principal Balance	21,465		21,465		19,823
Related Allowance	3,181		3,181		3,747
Average Recorded Balance	19,600	26,667	19,511	28,307
Commercial [Member]
With no related allowance recorded:
Recorded Investment	171		171		386
Unpaid Principal Balance	171		171		386
Average Recorded Balance	208	368	177	484
With allowance recorded:
Recorded Investment	135		135		319
Unpaid Principal Balance	135		135		794
Related Allowance	80		80		148
Average Recorded Balance	313	531	269	837
Residential Real Estate [Member]
With no related allowance recorded:
Recorded Investment	1,089		1,089		1,069
Unpaid Principal Balance	2,138		2,138		1,897
Average Recorded Balance	1,353	1,771	1,184	2,491
With allowance recorded:
Recorded Investment	72		72		72
Unpaid Principal Balance	72		72		72
Related Allowance	37		37		37
Average Recorded Balance	72	662	72	1,041
Home Equity Loans [Member]
With no related allowance recorded:
Recorded Investment
Unpaid Principal Balance
Related Allowance
Average Recorded Balance
With allowance recorded:
Recorded Investment
Unpaid Principal Balance
Related Allowance
Average Recorded Balance
Indirect [Member]
With no related allowance recorded:
Recorded Investment
Unpaid Principal Balance
Related Allowance
Average Recorded Balance
With allowance recorded:
Recorded Investment
Unpaid Principal Balance
Related Allowance
Average Recorded Balance
Consumer [Member]
With no related allowance recorded:
Recorded Investment
Unpaid Principal Balance
Related Allowance
Average Recorded Balance
With allowance recorded:
Recorded Investment
Unpaid Principal Balance
Related Allowance
Average Recorded Balance