XML 90 R74.htm IDEA: XBRL DOCUMENT
v3.20.4

ALLOWANCE FOR LOAN LOSSES AND CREDIT QUALITY - Additional Information (Details) |  | 12 Months Ended |
--- | --- | --- | ---
Jan. 20, 2021 USD ($) borrower | Dec. 31, 2020 USD ($) borrower | Dec. 31, 2019 USD ($) | Dec. 31, 2018 USD ($) | Dec. 31, 2017 USD ($)
Troubled Debt Restructuring |  |  |  |  |
Loans Modified In Troubled Debt Restructured Loans |  | $ 5,500,000 | $ 2,500,000 |  |
Valuation allowance |  | 61,408,000 | 50,652,000 | $ 48,453,000 | $ 47,121,000
Financing Receivable, Troubled Debt Restructuring, Subsequent Default |  |  | 601,000 |  |
Loan amount of credit quality analysis |  | 250,000 |  |  |
Financing receivable, loan portfolio, deferrals, COVID-19 | $ 102,200,000 | $ 100,700,000 |  |  |
Financing receivable, loan portfolio, deferrals, COVID-19, borrowers | borrower | 50 | 49 |  |  |
Financing receivable, loan portfolio, deferrals, COVID-19, percentage of loan portfolio (as a percent) | 2.30% | 2.20% |  |  |
Loans |  | $ 4,649,156,000 | 4,065,828,000 |  |
Loans under second deferral action | $ 20,800,000 |  |  |  |
Loans under fourth deferral action | 26,600,000 |  |  |  |
Borrowers percentage |  | 90 |  |  |
Pass |  |  |  |  |
Troubled Debt Restructuring |  |  |  |  |
Loans |  | $ 3,997,245,000 | $ 3,490,863,000 |  |
All Modifications [Member] |  |  |  |  |
Troubled Debt Restructuring |  |  |  |  |
Number of Loans |  | 4,000 | 1 | 12 |
Construction and Land Development Loans [Member] |  |  |  |  |
Troubled Debt Restructuring |  |  |  |  |
Financing Receivable, Modifications, Recorded Investment |  | $ 2,200,000 | $ 2,400,000 | $ 1,400,000 |
Commercial and Industrial Loans [Member] |  |  |  |  |
Troubled Debt Restructuring |  |  |  |  |
Valuation allowance |  | 28,333,000 | 25,789,000 | 22,518,000 | 21,097,000
Financing Receivable, Modifications, Recorded Investment |  |  |  | 1,300,000 |
Loans |  | 1,784,926,000 | 1,426,826,000 |  |
Commercial and Industrial Loans [Member] | Non-working Capital Loans [Member] |  |  |  |  |
Troubled Debt Restructuring |  |  |  |  |
Loans |  | 1,158,827,000 | 716,843,000 |  |
Commercial and Industrial Loans [Member] | Non-working Capital Loans [Member] | Pass |  |  |  |  |
Troubled Debt Restructuring |  |  |  |  |
Loans |  | 1,111,989,000 | 673,370,000 |  |
Commercial Real Estate and Multi-family Residential Loans |  |  |  |  |
Troubled Debt Restructuring |  |  |  |  |
Valuation allowance |  | 22,907,000 | 15,796,000 | 15,393,000 | 14,714,000
Financing Receivable, Modifications, Recorded Investment |  |  | 1,900,000 |  |
Loans |  | 1,892,572,000 | 1,670,840,000 |  |
Agri-business and Agricultural Loans [Member] |  |  |  |  |
Troubled Debt Restructuring |  |  |  |  |
Valuation allowance |  | 3,043,000 | 3,869,000 | 4,305,000 | 4,920,000
Loans |  | 429,662,000 | 379,631,000 |  |
Consumer 1-4 Family Mortgage Loans [Member] |  |  |  |  |
Troubled Debt Restructuring |  |  |  |  |
Valuation allowance |  | 2,619,000 | 2,086,000 | 2,292,000 | $ 2,768,000
Increase (decrease) in allowance for loan loss |  | 45,000 | 484,000 | 189,000 |
Financing Receivable, Modifications, Recorded Investment |  |  |  | $ 593,000 |
Loans |  | 344,699,000 | $ 377,999,000 |  |
Commercial loan |  |  |  |  |
Troubled Debt Restructuring |  |  |  |  |
Financing receivable, loan portfolio, deferrals, COVID-19 | $ 99,700,000 | $ 98,200,000 |  |  |
Financing receivable, loan portfolio, deferrals, COVID-19, borrowers | borrower | 24 | 22 |  |  |
Financing receivable, loan portfolio, deferrals, COVID-19, percentage of loan portfolio (as a percent) | 2.40% | 2.30% |  |  |
Loans under first deferral action |  | $ 11,900,000 |  |  |
Loans under second deferral action |  | 22,800,000 |  |  |
Loans under third deferral action | $ 40,200,000 | 41,900,000 |  |  |
Loans under fourth deferral action |  | 24,100,000 |  |  |
Consumer loan open-ended revolving lines |  |  |  |  |
Troubled Debt Restructuring |  |  |  |  |
Financing receivable, loan portfolio, deferrals, COVID-19 | $ 2,500,000 | $ 2,500,000 |  |  |
Financing receivable, loan portfolio, deferrals, COVID-19, borrowers | borrower | 26 | 27 |  |  |
Financing receivable, loan portfolio, deferrals, COVID-19, percentage of loan portfolio (as a percent) | 0.70% | 0.70% |  |  |
PPP | Pass |  |  |  |  |
Troubled Debt Restructuring |  |  |  |  |
Loans |  | $ 412,000,000.0 |  |  |

X
- Definition The percentage of deferral population and commercial real estate nonowner occupied loans. + References No definition available. + Details
Name: | lkfn_BorrowersPercentage
Namespace Prefix: | lkfn_
Data Type: | xbrli:pureItemType
Balance Type: | na
Period Type: | duration

X
- Definition Financing Receivable, Loan Portfolio, Deferrals, COVID-19 + References No definition available. + Details
Name: | lkfn_FinancingReceivableLoanPortfolioDeferralsCovid19
Namespace Prefix: | lkfn_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Financing Receivable, Loan Portfolio, Deferrals, COVID-19, Borrowers + References No definition available. + Details
Name: | lkfn_FinancingReceivableLoanPortfolioDeferralsCovid19Borrowers
Namespace Prefix: | lkfn_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of loans under first deferral action, pursuant to COVID 19 deferrals. + References No definition available. + Details
Name: | lkfn_FinancingReceivableLoanPortfolioDeferralsCovid19LoansUnderFirstDeferralAction
Namespace Prefix: | lkfn_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of loans under fourth deferral action, pursuant to COVID 19 deferrals. + References No definition available. + Details
Name: | lkfn_FinancingReceivableLoanPortfolioDeferralsCovid19LoansUnderFourthDeferralAction
Namespace Prefix: | lkfn_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of loans under second deferral action, pursuant to COVID 19 deferrals. + References No definition available. + Details
Name: | lkfn_FinancingReceivableLoanPortfolioDeferralsCovid19LoansUnderSecondDeferralAction
Namespace Prefix: | lkfn_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of loans under third deferral action, pursuant to COVID 19 deferrals. + References No definition available. + Details
Name: | lkfn_FinancingReceivableLoanPortfolioDeferralsCovid19LoansUnderThirdDeferralAction
Namespace Prefix: | lkfn_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Financing Receivable, Loan Portfolio, Deferrals, COVID-19, Percentage of Loan Portfolio + References No definition available. + Details
Name: | lkfn_FinancingReceivableLoanPortfolioDeferralsCovid19PercentageOfLoanPortfolio
Namespace Prefix: | lkfn_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Increase (decrease) in allowance for loan loss. + References No definition available. + Details
Name: | lkfn_IncreaseDecreaseInAllowanceForLoanLoss
Namespace Prefix: | lkfn_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The minimum loan amount required for credit quality analysis. + References No definition available. + Details
Name: | lkfn_LoanAmountOfCreditQualityAnalysis
Namespace Prefix: | lkfn_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount included in the allowance for loan loss for specific reserves on loans whose terms have been modified in trouble debt restructuring. + References No definition available. + Details
Name: | lkfn_LoansModifiedInTroubledDebtRestructuredLoans
Namespace Prefix: | lkfn_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Indicates the number of loans under each classification. + References No definition available. + Details
Name: | lkfn_NumberOfLoans
Namespace Prefix: | lkfn_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | lkfn_TroubledDebtRestructuringAbstract
Namespace Prefix: | lkfn_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of financing receivable modified as troubled debt restructuring. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 33 -URI http://asc.fasb.org/extlink&oid=121611835&loc=SL6953676-111524 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 40 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=121585226&loc=d3e18845-111554 + Details
Name: | us-gaap_FinancingReceivableModificationsRecordedInvestment
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of financing receivable modified as troubled debt restructuring within previous 12 months, with subsequent payment default. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 34 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=121611835&loc=SL6953682-111524 + Details
Name: | us-gaap_FinancingReceivableModificationsSubsequentDefaultRecordedInvestment1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- 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 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=121611835&loc=SL6953423-111524 Reference 2: 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=121614798&loc=d3e15032-111544 Reference 3: 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=121611835&loc=SL6953423-111524 Reference 4: 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

X
- Definition Amount before allowance and after deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. 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=121593590&loc=d3e4428-111522 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=121611835&loc=d3e5074-111524 + Details
Name: | us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | us-gaap_InternalCreditAssessmentAxis=us-gaap_PassMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | lkfn_FinancingReceivableModificationsAxis=lkfn_AllModificationMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_CollateralAxis=us-gaap_CommercialRealEstateMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=lkfn_TotalCommercialAndIndustrialLoansMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | lkfn_PortfolioSegmentAxis=lkfn_NonWorkingCapitalLoansMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_CommercialRealEstatePortfolioSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=lkfn_AgriBusinessAndAgriculturalLoansMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_ResidentialPortfolioSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_CommercialLoanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_ConsumerLoanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=lkfn_PayCheckProtectionProgrammeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |