Financial Asset Acquired with Credit Deterioration

No definition available.

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Period Type:	instant

- Definition

The valuation allowance for financing receivables that are expected to be uncollectible that were collectively evaluated for impairment.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 11B
-Subparagraph (g)
-URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953423-111524

+ Details

Name:	us-gaap_FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment
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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of valuation allowance for financing receivables that are expected to be uncollectible that were individually evaluated for impairment.

+ References

+ Details

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

- Definition

The balance of financing receivables that were collectively evaluated for impairment.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 11B
-Subparagraph (h)
-URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953423-111524

+ Details

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

- Definition

The balance of financing receivables that were individually evaluated for impairment.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 11B
-Subparagraph (h)
-URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953423-111524

+ Details

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

- 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

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

- Definition

Amount of allowance to cover probable credit losses on loans and leases. Includes carryover of or adjustments to the allowance for loan losses in connection with business combinations. Excludes allowance for loans and leases covered under loss sharing agreements.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03.7(d))
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 11B
-Subparagraph (g)
-URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953423-111524

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 30
-Section 50
-Paragraph 2
-Subparagraph (b)(1)(ii)
-URI http://asc.fasb.org/extlink&oid=82894903&loc=d3e15032-111544

Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 11B
-Subparagraph (c)(1)
-URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953423-111524

Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section S99
-Paragraph 4
-Subparagraph (SAB Topic 6.L.1)
-URI http://asc.fasb.org/extlink&oid=27010918&loc=d3e74567-122707

+ Details

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

- Definition

Amount before allowance of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans and leases covered under loss sharing agreements.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=82891408&loc=d3e4428-111522

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Details

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- Details

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

- Details

Name:	us-gaap_FinancingReceivablePortfolioSegmentAxis=lbai_CommercialIndustrialAndOtherMember
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- Details

Name:	us-gaap_FinancingReceivablePortfolioSegmentAxis=us-gaap_FinanceLeasesPortfolioSegmentMember
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Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancingReceivablePortfolioSegmentAxis=us-gaap_ResidentialPortfolioSegmentMember
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Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancingReceivablePortfolioSegmentAxis=lbai_ConstructionRealEstatePortfolioSegmentMember
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- Details

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Loans and Other Real Estate - Allowance for Loan and Lease Losses by Portfolio Segment (Detail) - USD ($) $ in Thousands	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans	$ 4,925,300		$ 4,460,447
Ending Balance: Individually evaluated for impairment, related allowance	244		338
Ending Balance	38,662	$ 37,979	37,688	$ 36,604	$ 35,644	$ 35,455
Loans and Leases
Financing Receivable, Recorded Investment, Past Due [Line Items]
Ending Balance: Individually evaluated for impairment	17,385		19,702
Ending Balance: Collectively evaluated for impairment	4,893,865		4,440,093
Ending Balance: Loans acquired with deteriorated credit quality	14,050		652
Total Loans	4,925,300		4,460,447
Ending Balance: Individually evaluated for impairment, related allowance	244		338
Ending Balance: Collectively evaluated for impairment, related allowance	38,418		37,350
Ending Balance	38,662		37,688
Commercial, secured by real estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans	3,431,709		3,057,779
Ending Balance: Individually evaluated for impairment, related allowance	219		307
Ending Balance	28,095	27,515	27,881	26,174	25,817	25,704
Commercial, secured by real estate \| Loans and Leases
Financing Receivable, Recorded Investment, Past Due [Line Items]
Ending Balance: Individually evaluated for impairment	15,223		16,554
Ending Balance: Collectively evaluated for impairment	3,409,587		3,040,573
Ending Balance: Loans acquired with deteriorated credit quality	6,899		652
Total Loans	3,431,709		3,057,779
Ending Balance: Individually evaluated for impairment, related allowance	219		307
Ending Balance: Collectively evaluated for impairment, related allowance	27,876		27,574
Ending Balance	28,095		27,881
Commercial, industrial and other
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans	407,776		336,735
Ending Balance: Individually evaluated for impairment, related allowance	7		7
Ending Balance	2,633	2,592	1,742	2,012	1,768	2,313
Commercial, industrial and other \| Loans and Leases
Financing Receivable, Recorded Investment, Past Due [Line Items]
Ending Balance: Individually evaluated for impairment	772		1,360
Ending Balance: Collectively evaluated for impairment	404,488		335,375
Ending Balance: Loans acquired with deteriorated credit quality	2,516		0
Total Loans	407,776		336,735
Ending Balance: Individually evaluated for impairment, related allowance	7		7
Ending Balance: Collectively evaluated for impairment, related allowance	2,626		1,735
Ending Balance	2,633		1,742
Equipment finance
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans	99,351		87,925
Ending Balance: Individually evaluated for impairment, related allowance	10		14
Ending Balance	1,055	947	987	1,264	1,042	630
Equipment finance \| Loans and Leases
Financing Receivable, Recorded Investment, Past Due [Line Items]
Ending Balance: Individually evaluated for impairment	23		331
Ending Balance: Collectively evaluated for impairment	99,328		87,594
Ending Balance: Loans acquired with deteriorated credit quality	0		0
Total Loans	99,351		87,925
Ending Balance: Individually evaluated for impairment, related allowance	10		14
Ending Balance: Collectively evaluated for impairment, related allowance	1,045		973
Ending Balance	1,055		987
Real estate - residential mortgage
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans	336,810		329,854
Ending Balance: Individually evaluated for impairment, related allowance	3		4
Ending Balance	1,606	1,564	1,566	1,585	1,589	1,557
Real estate - residential mortgage \| Loans and Leases
Financing Receivable, Recorded Investment, Past Due [Line Items]
Ending Balance: Individually evaluated for impairment	700		730
Ending Balance: Collectively evaluated for impairment	335,648		329,124
Ending Balance: Loans acquired with deteriorated credit quality	462		0
Total Loans	336,810		329,854
Ending Balance: Individually evaluated for impairment, related allowance	3		4
Ending Balance: Collectively evaluated for impairment, related allowance	1,603		1,562
Ending Balance	1,606		1,566
Real estate - construction
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans	305,738		319,545
Ending Balance: Individually evaluated for impairment, related allowance	0		0
Ending Balance	2,708	2,887	3,015	3,063	2,932	2,731
Real estate - construction \| Loans and Leases
Financing Receivable, Recorded Investment, Past Due [Line Items]
Ending Balance: Individually evaluated for impairment	0		0
Ending Balance: Collectively evaluated for impairment	302,100		319,545
Ending Balance: Loans acquired with deteriorated credit quality	3,638		0
Total Loans	305,738		319,545
Ending Balance: Individually evaluated for impairment, related allowance	0		0
Ending Balance: Collectively evaluated for impairment, related allowance	2,708		3,015
Ending Balance	2,708		3,015
Home equity and consumer
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans	343,916		328,609
Ending Balance: Individually evaluated for impairment, related allowance	5		6
Ending Balance	2,565	$ 2,474	2,497	$ 2,506	$ 2,496	$ 2,520
Home equity and consumer \| Loans and Leases
Financing Receivable, Recorded Investment, Past Due [Line Items]
Ending Balance: Individually evaluated for impairment	667		727
Ending Balance: Collectively evaluated for impairment	342,714		327,882
Ending Balance: Loans acquired with deteriorated credit quality	535		0
Total Loans	343,916		328,609
Ending Balance: Individually evaluated for impairment, related allowance	5		6
Ending Balance: Collectively evaluated for impairment, related allowance	2,560		2,491
Ending Balance	$ 2,565		$ 2,497