$LKFN
LAKELAND FINANCIAL CORP Stock $lkfn

$lkfn Overview Financials Valuation SEC Filings Company Website

2019 Q4 Form 10-K Financial Statement

#000110465921026486 Filed on February 23, 2021

Income Statement

Concept	2019 Q4	2019 Q3	2019 Q2
Revenue	$52.31M	$54.77M	$54.64M
YoY Change	-2.64%	8.71%	11.97%
Cost Of Revenue
YoY Change
Gross Profit
YoY Change
Gross Profit Margin
Selling, General & Admin
YoY Change
% of Gross Profit
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$1.500M	$1.500M	$1.500M
YoY Change	0.0%	7.14%	7.14%
% of Gross Profit
Operating Expenses
YoY Change
Operating Profit
YoY Change
Interest Expense	$13.43M	$15.22M	$16.22M
YoY Change	-5.01%	22.24%	44.06%
% of Operating Profit
Other Income/Expense, Net
YoY Change
Pretax Income	$27.63M	$26.57M	$27.12M
YoY Change	2.94%	5.24%	7.41%
Income Tax	$5.431M	$5.119M	$5.409M
% Of Pretax Income	19.66%	19.26%	19.94%
Net Earnings	$22.20M	$21.45M	$21.71M
YoY Change	3.91%	4.3%	7.8%
Net Earnings / Revenue	42.43%	39.17%	39.74%
Basic Earnings Per Share	$0.86	$0.84	$0.85
Diluted Earnings Per Share	$0.86	$0.83	$0.85
COMMON SHARES
Basic Shares Outstanding	25.62M	25.62M	25.61M
Diluted Shares Outstanding		25.80M	25.77M

Balance Sheet

Concept	2019 Q4	2019 Q3	2019 Q2
SHORT-TERM ASSETS
Cash & Short-Term Investments
YoY Change
Cash & Equivalents	$99.38M	$136.6M	$196.4M
Short-Term Investments
Other Short-Term Assets
YoY Change
Inventory
Prepaid Expenses
Receivables
Other Receivables
Total Short-Term Assets
YoY Change
LONG-TERM ASSETS
Property, Plant & Equipment	$60.37M	$59.63M	$58.72M
YoY Change	3.9%	3.45%	2.66%
Goodwill	$4.970M	$4.970M	$4.970M
YoY Change	0.0%	0.0%
Intangibles
YoY Change
Long-Term Investments	$6.700M
YoY Change	-4.29%
Other Assets
YoY Change
Total Long-Term Assets
YoY Change
TOTAL ASSETS
Total Short-Term Assets
Total Long-Term Assets
Total Assets	$4.947B	$4.948B	$4.976B
YoY Change	1.47%	4.0%	4.51%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$11.60M	$12.10M	$12.50M
YoY Change	11.54%	39.08%	71.23%
Accrued Expenses	$5.100M
YoY Change
Deferred Revenue
YoY Change
Short-Term Debt	$0.00	$0.00	$15.00M
YoY Change	-100.0%	-100.0%	-85.88%
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities	$16.70M	$12.10M	$12.50M
YoY Change	60.58%	39.08%	71.23%
LONG-TERM LIABILITIES
Long-Term Debt	$0.00	$30.90M	$30.90M
YoY Change	-100.0%	0.0%	0.0%
Other Long-Term Liabilities	$28.10M	$37.30M	$30.50M
YoY Change	24.34%	42.91%	53.27%
Total Long-Term Liabilities	$28.10M	$68.20M	$61.40M
YoY Change	-47.48%	19.65%	20.87%
TOTAL LIABILITIES
Total Short-Term Liabilities	$16.70M	$12.10M	$12.50M
Total Long-Term Liabilities	$28.10M	$68.20M	$61.40M
Total Liabilities	$4.349B	$4.364B	$4.410B
YoY Change	-0.11%	2.46%	3.18%
SHAREHOLDERS EQUITY
Retained Earnings	$475.2M	$460.7M	$447.0M
YoY Change	13.38%	13.93%	14.49%
Common Stock	$114.9M	$114.2M	$112.7M
YoY Change	2.2%	2.88%	3.17%
Preferred Stock
YoY Change
Treasury Stock (at cost)	$4.153M	$4.099M	$3.884M
YoY Change	10.57%	10.46%	10.28%
Treasury Stock Shares	$178.7K	$177.6K	$172.9K
Shareholders Equity	$598.0M	$584.3M	$565.3M
YoY Change
Total Liabilities & Shareholders Equity	$4.947B	$4.948B	$4.976B
YoY Change	1.47%	4.0%	4.51%

Cashflow Statement

Concept	2019 Q4	2019 Q3	2019 Q2
OPERATING ACTIVITIES
Net Income	$22.20M	$21.45M	$21.71M
YoY Change	3.91%	4.3%	7.8%
Depreciation, Depletion And Amortization	$1.500M	$1.500M	$1.500M
YoY Change	0.0%	7.14%	7.14%
Cash From Operating Activities	$28.10M	$27.20M	$21.00M
YoY Change	-5.7%	-8.11%	6.6%
INVESTING ACTIVITIES
Capital Expenditures	-$2.000M	-$2.400M	-$1.500M
YoY Change	-23.08%	33.33%	-48.28%
Acquisitions
YoY Change
Other Investing Activities	-$45.20M	-$23.80M	-$71.00M
YoY Change	-45.21%	-695.0%	264.1%
Cash From Investing Activities	-$47.20M	-$26.20M	-$72.50M
YoY Change	-44.47%	-1290.91%	223.66%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net	$928.0K
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	-18.10M	-60.90M	59.10M
YoY Change	-120.16%	105.05%	283.77%
NET CHANGE
Cash From Operating Activities	28.10M	27.20M	21.00M
Cash From Investing Activities	-47.20M	-26.20M	-72.50M
Cash From Financing Activities	-18.10M	-60.90M	59.10M
Net Change In Cash	-37.20M	-59.90M	7.600M
YoY Change	-207.51%	-2952.38%	-40.16%
FREE CASH FLOW
Cash From Operating Activities	$28.10M	$27.20M	$21.00M
Capital Expenditures	-$2.000M	-$2.400M	-$1.500M
Free Cash Flow	$30.10M	$29.60M	$22.50M
YoY Change	-7.1%	-5.73%	-0.44%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value
CY2019Q4	us-gaap	Loans Receivable Held For Sale Net Not Part Of Disposal Group LoansReceivableHeldForSaleNetNotPartOfDisposalGroup	4527000
CY2019Q4	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Credit Losses On Debt Securities Held OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsCreditLossesOnDebtSecuritiesHeld	0
CY2020	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2020
CY2020	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2020	dei	Amendment Flag AmendmentFlag	false
CY2020	dei	Document Annual Report DocumentAnnualReport	true
CY2020	dei	Document Transition Report DocumentTransitionReport	false
CY2020	dei	Icfr Auditor Attestation Flag IcfrAuditorAttestationFlag	true
CY2019Q4	us-gaap	Treasury Stock Shares TreasuryStockShares	178741
CY2019Q4	us-gaap	Treasury Stock Common Value TreasuryStockCommonValue	4153000
CY2020Q4	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Credit Losses On Debt Securities Held OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsCreditLossesOnDebtSecuritiesHeld	0
CY2020Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies
CY2018Q4	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Credit Losses On Debt Securities Held OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsCreditLossesOnDebtSecuritiesHeld	0
CY2019	us-gaap	Investment Banking Advisory Brokerage And Underwriting Fees And Commissions InvestmentBankingAdvisoryBrokerageAndUnderwritingFeesAndCommissions	6835000
CY2018	us-gaap	Investment Banking Advisory Brokerage And Underwriting Fees And Commissions InvestmentBankingAdvisoryBrokerageAndUnderwritingFeesAndCommissions	6344000
CY2020	us-gaap	Brokerage Commissions Revenue BrokerageCommissionsRevenue	1670000
CY2019	us-gaap	Brokerage Commissions Revenue BrokerageCommissionsRevenue	1687000
CY2018	us-gaap	Brokerage Commissions Revenue BrokerageCommissionsRevenue	1458000
CY2019Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies
CY2020	dei	Entity Central Index Key EntityCentralIndexKey	0000721994
CY2020	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2020Q4	us-gaap	Operating Lease Liability Statement Of Financial Position Extensible List OperatingLeaseLiabilityStatementOfFinancialPositionExtensibleList	us-gaap:OtherLiabilities
CY2019Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P0Y
CY2020	dei	Document Type DocumentType	10-K
CY2020	dei	Document Period End Date DocumentPeriodEndDate	2020-12-31
CY2020	dei	Entity File Number EntityFileNumber	0-11487
CY2020	dei	Entity Registrant Name EntityRegistrantName	LAKELAND FINANCIAL CORPORATION
CY2020	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	IN
CY2020	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	35-1559596
CY2020	dei	Entity Address Address Line1 EntityAddressAddressLine1	202 East Center Street
CY2020	dei	Entity Address Address Line2 EntityAddressAddressLine2	P.O. Box 1387
CY2020	dei	Entity Address City Or Town EntityAddressCityOrTown	Warsaw
CY2020	dei	Entity Address State Or Province EntityAddressStateOrProvince	IN
CY2020	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	46581
CY2020	dei	City Area Code CityAreaCode	574
CY2020	dei	Local Phone Number LocalPhoneNumber	267-6144
CY2020	dei	Security12b Title Security12bTitle	Common Stock, no par value
CY2020	dei	Trading Symbol TradingSymbol	LKFN
CY2020	dei	Security Exchange Name SecurityExchangeName	NASDAQ
CY2020	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	Yes
CY2020	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2020	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2020	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
CY2020	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
CY2020	dei	Entity Small Business EntitySmallBusiness	false
CY2020	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
CY2020	dei	Entity Shell Company EntityShellCompany	false
CY2020Q2	dei	Entity Public Float EntityPublicFloat	1111392010
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CY2020Q4	us-gaap	Cash And Due From Banks CashAndDueFromBanks	74457000
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CY2020	us-gaap	Other Noninterest Expense OtherNoninterestExpense	8197000
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CY2018	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	3.18
CY2020	us-gaap	Noninterest Expense NoninterestExpense	91205000
CY2019	us-gaap	Noninterest Expense NoninterestExpense	89424000
CY2018	us-gaap	Noninterest Expense NoninterestExpense	86229000
CY2020	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	103876000
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	107385000
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	98944000
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	19539000
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	20338000
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	18533000
CY2020	us-gaap	Net Income Loss NetIncomeLoss	84337000
CY2019	us-gaap	Net Income Loss NetIncomeLoss	87047000
CY2018	us-gaap	Net Income Loss NetIncomeLoss	80411000
CY2020	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	25469242
CY2019	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	25588404
CY2018	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	25288533
CY2020	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	3.31
CY2019	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	3.40
CY2020	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	25573941
CY2019	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	25758893
CY2018	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	25727831
CY2020	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	3.30
CY2019	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	3.38
CY2018	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	3.13
CY2020	us-gaap	Net Income Loss NetIncomeLoss	84337000
CY2019	us-gaap	Net Income Loss NetIncomeLoss	87047000
CY2018	us-gaap	Net Income Loss NetIncomeLoss	80411000
CY2020	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	20148000
CY2019	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	23438000
CY2018	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	-7339000
CY2020	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax	433000
CY2019	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax	142000
CY2018	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax	-50000
CY2020	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Before Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentBeforeTax	19715000
CY2019	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Before Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentBeforeTax	23296000
CY2018	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Before Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentBeforeTax	-7289000
CY2020	us-gaap	Other Comprehensive Income Availableforsale Securities Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesTaxPortionAttributableToParent	4140000
CY2019	us-gaap	Other Comprehensive Income Availableforsale Securities Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesTaxPortionAttributableToParent	4893000
CY2018	us-gaap	Other Comprehensive Income Availableforsale Securities Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesTaxPortionAttributableToParent	-1637000
CY2020	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent	15575000
CY2019	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent	18403000
CY2018	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent	-5652000
CY2020	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Net Unamortized Gain Loss Arising During Period Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansNetUnamortizedGainLossArisingDuringPeriodBeforeTax	-105000
CY2019	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Net Unamortized Gain Loss Arising During Period Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansNetUnamortizedGainLossArisingDuringPeriodBeforeTax	-409000
CY2018	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Net Unamortized Gain Loss Arising During Period Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansNetUnamortizedGainLossArisingDuringPeriodBeforeTax	269000
CY2020	us-gaap	Other Comprehensive Income Loss Amortization Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Prior Service Cost Credit Before Tax OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditBeforeTax	251000
CY2019	us-gaap	Other Comprehensive Income Loss Amortization Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Prior Service Cost Credit Before Tax OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditBeforeTax	205000
CY2018	us-gaap	Other Comprehensive Income Loss Amortization Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Prior Service Cost Credit Before Tax OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditBeforeTax	266000
CY2020	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Before Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentBeforeTaxPortionAttributableToParent	-146000
CY2019	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Before Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentBeforeTaxPortionAttributableToParent	204000
CY2018	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Before Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentBeforeTaxPortionAttributableToParent	-535000
CY2020	us-gaap	Other Comprehensive Income Defined Benefit Plans Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansTaxPortionAttributableToParent	-36000
CY2018	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	25291000
CY2019	us-gaap	Other Comprehensive Income Defined Benefit Plans Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansTaxPortionAttributableToParent	51000
CY2018	us-gaap	Other Comprehensive Income Defined Benefit Plans Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansTaxPortionAttributableToParent	-163000
CY2020	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent	-110000
CY2019	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent	153000
CY2018	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent	-372000
CY2020	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	15685000
CY2019	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	18250000
CY2018	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-5280000
CY2020	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	100022000
CY2019	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	105297000
CY2018	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	75131000
CY2017Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	468667000
CY2018	us-gaap	Net Income Loss NetIncomeLoss	80411000
CY2018	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-5280000
CY2018	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	1.00
CY2018	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	2435000
CY2018	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	5608000
CY2018Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	521704000
CY2019	us-gaap	Net Income Loss NetIncomeLoss	87047000
CY2019	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	18250000
CY2019	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	1.16
CY2019	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	29652000
CY2019	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	2109000
CY2019	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	4187000
CY2019Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	598100000
CY2020	us-gaap	Net Income Loss NetIncomeLoss	84337000
CY2020	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	15685000
CY2020	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	1.20
CY2020	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	30579000
CY2020	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	10012000
CY2020	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	2137000
CY2020	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	1790000
CY2020Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	657184000
CY2020	us-gaap	Net Income Loss NetIncomeLoss	84337000
CY2019	us-gaap	Net Income Loss NetIncomeLoss	87047000
CY2018	us-gaap	Net Income Loss NetIncomeLoss	80411000
CY2020	us-gaap	Depreciation Depreciation	6042000
CY2019	us-gaap	Depreciation Depreciation	5930000
CY2018	us-gaap	Depreciation Depreciation	5654000
CY2020	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	14770000
CY2019	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	3235000
CY2018	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	6400000
CY2020	us-gaap	Gains Losses On Sales Of Other Real Estate GainsLossesOnSalesOfOtherRealEstate	0
CY2019	us-gaap	Gains Losses On Sales Of Other Real Estate GainsLossesOnSalesOfOtherRealEstate	0
CY2018	us-gaap	Gains Losses On Sales Of Other Real Estate GainsLossesOnSalesOfOtherRealEstate	-16000
CY2020	us-gaap	Amortization Of Mortgage Servicing Rights Ms Rs AmortizationOfMortgageServicingRightsMSRs	772000
CY2019	us-gaap	Amortization Of Mortgage Servicing Rights Ms Rs AmortizationOfMortgageServicingRightsMSRs	528000
CY2018	us-gaap	Amortization Of Mortgage Servicing Rights Ms Rs AmortizationOfMortgageServicingRightsMSRs	503000
CY2020	us-gaap	Servicing Asset At Amortized Value Valuation Allowance ServicingAssetAtAmortizedValueValuationAllowance	715000
CY2019	us-gaap	Servicing Asset At Amortized Value Valuation Allowance ServicingAssetAtAmortizedValueValuationAllowance	0
CY2018	us-gaap	Servicing Asset At Amortized Value Valuation Allowance ServicingAssetAtAmortizedValueValuationAllowance	0
CY2020	us-gaap	Payments For Origination And Purchases Of Loans Held For Sale PaymentsForOriginationAndPurchasesOfLoansHeldForSale	117600000
CY2019	us-gaap	Payments For Origination And Purchases Of Loans Held For Sale PaymentsForOriginationAndPurchasesOfLoansHeldForSale	66008000
CY2018	us-gaap	Payments For Origination And Purchases Of Loans Held For Sale PaymentsForOriginationAndPurchasesOfLoansHeldForSale	49816000
CY2020	us-gaap	Gain Loss On Sales Of Loans Net GainLossOnSalesOfLoansNet	4510000
CY2019	us-gaap	Gain Loss On Sales Of Loans Net GainLossOnSalesOfLoansNet	2043000
CY2018	us-gaap	Gain Loss On Sales Of Loans Net GainLossOnSalesOfLoansNet	1713000
CY2020	us-gaap	Proceeds From Sale Of Loans Held For Sale ProceedsFromSaleOfLoansHeldForSale	114244000
CY2019	us-gaap	Proceeds From Sale Of Loans Held For Sale ProceedsFromSaleOfLoansHeldForSale	64820000
CY2018	us-gaap	Proceeds From Sale Of Loans Held For Sale ProceedsFromSaleOfLoansHeldForSale	51715000
CY2020	us-gaap	Gain Loss On Disposition Of Assets GainLossOnDispositionOfAssets	-86000
CY2019	us-gaap	Gain Loss On Disposition Of Assets GainLossOnDispositionOfAssets	3000
CY2018	us-gaap	Gain Loss On Disposition Of Assets GainLossOnDispositionOfAssets	-1000
CY2020	us-gaap	Debt And Equity Securities Gain Loss DebtAndEquitySecuritiesGainLoss	433000
CY2019	us-gaap	Debt And Equity Securities Gain Loss DebtAndEquitySecuritiesGainLoss	142000
CY2018	us-gaap	Debt And Equity Securities Gain Loss DebtAndEquitySecuritiesGainLoss	-50000
CY2020	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	-3998000
CY2019	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	-3947000
CY2018	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	-3177000
CY2020	us-gaap	Share Based Compensation ShareBasedCompensation	1790000
CY2019	us-gaap	Share Based Compensation ShareBasedCompensation	4187000
CY2018	us-gaap	Share Based Compensation ShareBasedCompensation	5608000
CY2020	lkfn	Earning On Life Insurance EarningOnLifeInsurance	2105000
CY2019	lkfn	Earning On Life Insurance EarningOnLifeInsurance	1890000
CY2018	lkfn	Earning On Life Insurance EarningOnLifeInsurance	1244000
CY2020	lkfn	Gain On Life Insurance GainOnLifeInsurance	730000
CY2019	lkfn	Gain On Life Insurance GainOnLifeInsurance	841000
CY2018	lkfn	Gain On Life Insurance GainOnLifeInsurance	206000
CY2020	us-gaap	Excess Tax Benefit From Share Based Compensation Operating Activities ExcessTaxBenefitFromShareBasedCompensationOperatingActivities	71000
CY2019	us-gaap	Excess Tax Benefit From Share Based Compensation Operating Activities ExcessTaxBenefitFromShareBasedCompensationOperatingActivities	529000
CY2018	us-gaap	Excess Tax Benefit From Share Based Compensation Operating Activities ExcessTaxBenefitFromShareBasedCompensationOperatingActivities	761000
CY2020	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	6315000
CY2019	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	4733000
CY2018	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	3301000
CY2020	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	-7762000
CY2019	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	6534000
CY2018	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	8481000
CY2020	us-gaap	Adjustments To Reconcile Net Income Loss To Cash Provided By Used In Operating Activities AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivities	2891000
CY2019	us-gaap	Adjustments To Reconcile Net Income Loss To Cash Provided By Used In Operating Activities AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivities	12992000
CY2018	us-gaap	Adjustments To Reconcile Net Income Loss To Cash Provided By Used In Operating Activities AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivities	24564000
CY2020	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	87228000
CY2019	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	100039000
CY2018	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	104975000
CY2020	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	8018000
CY2019	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	57114000
CY2018	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	15302000
CY2020	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	97998000
CY2019	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	67818000
CY2018	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	53817000
CY2020	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	216478000
CY2019	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	129453000
CY2018	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	126551000
CY2020	us-gaap	Payments To Acquire Life Insurance Policies PaymentsToAcquireLifeInsurancePolicies	10409000
CY2019	us-gaap	Payments To Acquire Life Insurance Policies PaymentsToAcquireLifeInsurancePolicies	5552000
CY2018	us-gaap	Payments To Acquire Life Insurance Policies PaymentsToAcquireLifeInsurancePolicies	423000
CY2020	us-gaap	Payments For Proceeds From Loans And Leases PaymentsForProceedsFromLoansAndLeases	587377000
CY2019	us-gaap	Payments For Proceeds From Loans And Leases PaymentsForProceedsFromLoansAndLeases	152119000
CY2018	us-gaap	Payments For Proceeds From Loans And Leases PaymentsForProceedsFromLoansAndLeases	101670000
CY2020	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	658000
CY2019	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	14000
CY2018	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	461000
CY2020	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	5719000
CY2019	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	7998000
CY2018	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	7968000
CY2020	us-gaap	Proceeds From Sale Of Other Real Estate ProceedsFromSaleOfOtherRealEstate	0
CY2019	us-gaap	Proceeds From Sale Of Other Real Estate ProceedsFromSaleOfOtherRealEstate	0
CY2018	us-gaap	Proceeds From Sale Of Other Real Estate ProceedsFromSaleOfOtherRealEstate	21000
CY2020	us-gaap	Proceeds From Life Insurance Policies ProceedsFromLifeInsurancePolicies	1285000
CY2019	us-gaap	Proceeds From Life Insurance Policies ProceedsFromLifeInsurancePolicies	1483000
CY2018	us-gaap	Proceeds From Life Insurance Policies ProceedsFromLifeInsurancePolicies	569000
CY2020	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-712024000
CY2019	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-168693000
CY2018	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-166442000
CY2020	us-gaap	Increase Decrease In Deposits IncreaseDecreaseInDeposits	902986000
CY2019	us-gaap	Increase Decrease In Deposits IncreaseDecreaseInDeposits	89754000
CY2018	us-gaap	Increase Decrease In Deposits IncreaseDecreaseInDeposits	35410000
CY2020	us-gaap	Proceeds From Repayments Of Short Term Debt ProceedsFromRepaymentsOfShortTermDebt	10500000
CY2019	us-gaap	Proceeds From Repayments Of Short Term Debt ProceedsFromRepaymentsOfShortTermDebt	-75555000
CY2018	us-gaap	Proceeds From Repayments Of Short Term Debt ProceedsFromRepaymentsOfShortTermDebt	174903000
CY2020	lkfn	Paymentsonshorttermfhlbankborrowings Paymentsonshorttermfhlbankborrowings	170000000
CY2019	lkfn	Paymentsonshorttermfhlbankborrowings Paymentsonshorttermfhlbankborrowings	0
CY2018	lkfn	Paymentsonshorttermfhlbankborrowings Paymentsonshorttermfhlbankborrowings	80000000
CY2020	lkfn	Payments On Long Term Federal Home Loan Bank Borrowings PaymentsOnLongTermFederalHomeLoanBankBorrowings	0
CY2019	lkfn	Payments On Long Term Federal Home Loan Bank Borrowings PaymentsOnLongTermFederalHomeLoanBankBorrowings	0
CY2018	lkfn	Payments On Long Term Federal Home Loan Bank Borrowings PaymentsOnLongTermFederalHomeLoanBankBorrowings	30000
CY2020	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	75000000
CY2019	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	0
CY2018	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	0
CY2020	us-gaap	Repayments Of Subordinated Debt RepaymentsOfSubordinatedDebt	0
CY2019	us-gaap	Repayments Of Subordinated Debt RepaymentsOfSubordinatedDebt	30928000
CY2018	us-gaap	Repayments Of Subordinated Debt RepaymentsOfSubordinatedDebt	0
CY2020	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	30566000
CY2019	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	29639000
CY2018	us-gaap	Payments Of Dividends Preferred Stock And Preference Stock PaymentsOfDividendsPreferredStockAndPreferenceStock	13000
CY2020	lkfn	Proceeds From Repayment Of Issuance Of Shares Under Incentive And Share Based Compensation Plans Including Stock Options ProceedsFromRepaymentOfIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions	-2137000
CY2018	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	25278000
CY2020	us-gaap	Payments Of Dividends Preferred Stock And Preference Stock PaymentsOfDividendsPreferredStockAndPreferenceStock	13000
CY2019	us-gaap	Payments Of Dividends Preferred Stock And Preference Stock PaymentsOfDividendsPreferredStockAndPreferenceStock	13000
CY2019	lkfn	Proceeds From Repayment Of Issuance Of Shares Under Incentive And Share Based Compensation Plans Including Stock Options ProceedsFromRepaymentOfIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions	-2109000
CY2018	lkfn	Proceeds From Repayment Of Issuance Of Shares Under Incentive And Share Based Compensation Plans Including Stock Options ProceedsFromRepaymentOfIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions	-2435000
CY2020	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	10547000
CY2019	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	515000
CY2018	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	463000
CY2020	us-gaap	Proceeds From Sale Of Treasury Stock ProceedsFromSaleOfTreasuryStock	119000
CY2019	us-gaap	Proceeds From Sale Of Treasury Stock ProceedsFromSaleOfTreasuryStock	118000
CY2018	us-gaap	Proceeds From Sale Of Treasury Stock ProceedsFromSaleOfTreasuryStock	115000
CY2020	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	775342000
CY2019	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-48887000
CY2018	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	102209000
CY2020	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	150546000
CY2019	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-117541000
CY2018	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	40742000
CY2019Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	99381000
CY2018Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	216922000
CY2017Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	176180000
CY2020Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	249927000
CY2019Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	99381000
CY2018Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	216922000
CY2020	us-gaap	Interest Paid InterestPaid	35740000
CY2019	us-gaap	Interest Paid InterestPaid	58964000
CY2018	us-gaap	Interest Paid InterestPaid	43606000
CY2020	us-gaap	Income Taxes Paid IncomeTaxesPaid	19335000
CY2019	us-gaap	Income Taxes Paid IncomeTaxesPaid	21035000
CY2018	us-gaap	Income Taxes Paid IncomeTaxesPaid	19033000
CY2020	us-gaap	Transfer To Other Real Estate TransferToOtherRealEstate	35000
CY2019	us-gaap	Transfer To Other Real Estate TransferToOtherRealEstate	0
CY2018	us-gaap	Transfer To Other Real Estate TransferToOtherRealEstate	316000
CY2020	lkfn	Property Transferred To Held For Sale PropertyTransferredToHeldForSale	0
CY2019	lkfn	Property Transferred To Held For Sale PropertyTransferredToHeldForSale	0
CY2018	lkfn	Property Transferred To Held For Sale PropertyTransferredToHeldForSale	221000
CY2020	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	0
CY2019	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	5483000
CY2018	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	0
CY2019Q4	us-gaap	Cash Available For Distributions CashAvailableForDistributions	1600000
CY2020Q4	us-gaap	Cash Available For Distributions CashAvailableForDistributions	2600000
CY2020	us-gaap	Use Of Estimates UseOfEstimates	<p style="font-family:'Times New Roman','Times','serif';font-size:10pt;font-weight:bold;margin:0pt 0pt 12pt 0pt;">Use of Estimates:</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-indent:36pt;margin:0pt 0pt 10pt 0pt;">To prepare financial statements in conformity with U.S. generally accepted accounting principles (“GAAP”), management makes estimates and assumptions based on available information. These estimates and assumptions affect the amounts reported in the financial statements and the disclosures provided and future results could differ.</p>
CY2020Q4	lkfn	Accrued Interest On Loans AccruedInterestOnLoans	14600000
CY2019Q4	lkfn	Accrued Interest On Loans AccruedInterestOnLoans	11500000
CY2020Q4	us-gaap	Notes Receivable Net NotesReceivableNet	250000
CY2020Q4	us-gaap	Equity Method Investments EquityMethodInvestments	9200000
CY2019Q4	us-gaap	Equity Method Investments EquityMethodInvestments	6700000
CY2019Q4	us-gaap	Real Estate Acquired Through Foreclosure RealEstateAcquiredThroughForeclosure	316000
CY2020Q4	us-gaap	Real Estate Acquired Through Foreclosure RealEstateAcquiredThroughForeclosure	316000
CY2020	us-gaap	Contractually Specified Servicing Fees Amount ContractuallySpecifiedServicingFeesAmount	1200000
CY2019	us-gaap	Contractually Specified Servicing Fees Amount ContractuallySpecifiedServicingFeesAmount	1100000
CY2018	us-gaap	Contractually Specified Servicing Fees Amount ContractuallySpecifiedServicingFeesAmount	1100000
CY2020Q4	lkfn	Mortgage Loans On Real Estate Carrying Value MortgageLoansOnRealEstateCarryingValue	3500000
CY2019Q4	lkfn	Mortgage Loans On Real Estate Carrying Value MortgageLoansOnRealEstateCarryingValue	3800000
CY2020Q4	us-gaap	Mortgage Loans On Real Estate MortgageLoansOnRealEstate	351000000.0
CY2019Q4	us-gaap	Mortgage Loans On Real Estate MortgageLoansOnRealEstate	337900000
CY2019Q4	us-gaap	Escrow Deposit EscrowDeposit	1600000
CY2020Q4	lkfn	Available For Sale Securities With Maturities Amortized Cost AvailableForSaleSecuritiesWithMaturitiesAmortizedCost	391798000
CY2020Q4	lkfn	Available For Sale Securities With Maturities Fair Value AvailableForSaleSecuritiesWithMaturitiesFairValue	418461000
CY2020Q4	us-gaap	Available For Sale Securities Debt Maturities Without Single Maturity Date Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateAmortizedCost	306108000
CY2020Q4	us-gaap	Mortgage Backed Securities Available For Sale Fair Value Disclosure MortgageBackedSecuritiesAvailableForSaleFairValueDisclosure	316384000
CY2020Q4	us-gaap	Treasury Stock Shares TreasuryStockShares	473660
CY2019Q4	us-gaap	Treasury Stock Shares TreasuryStockShares	178741
CY2020	lkfn	Shares Purchased Under Director Deferred Compensation Plan Included In Treasury Stock SharesPurchasedUnderDirectorDeferredCompensationPlanIncludedInTreasuryStock	184559
CY2019	lkfn	Shares Purchased Under Director Deferred Compensation Plan Included In Treasury Stock SharesPurchasedUnderDirectorDeferredCompensationPlanIncludedInTreasuryStock	178741
CY2020	us-gaap	Stock Repurchased During Period Shares StockRepurchasedDuringPeriodShares	289101
CY2020	us-gaap	Treasury Stock Acquired Average Cost Per Share TreasuryStockAcquiredAverageCostPerShare	34.63
CY2019Q4	lkfn	Cash On Hand Or On Deposit Requirement CashOnHandOrOnDepositRequirement	28900000
CY2020Q4	us-gaap	Available For Sale Securities Debt Maturities Rolling After Year Ten Fair Value AvailableForSaleSecuritiesDebtMaturitiesRollingAfterYearTenFairValue	366476000
CY2020	us-gaap	Prior Period Reclassification Adjustment Description PriorPeriodReclassificationAdjustmentDescription	<p style="font-family:'Times New Roman','Times','serif';font-size:10pt;font-weight:bold;margin:0pt 0pt 12pt 0pt;">Reclassifications:</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-indent:36pt;margin:0pt 0pt 12pt 0pt;">Certain amounts appearing in the financial statements and notes thereto for prior periods have been reclassified to conform with the current presentation. The reclassifications had no effect on net income or stockholders’ equity as previously reported.</p>
CY2020Q4	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	697906000
CY2020Q4	us-gaap	Accumulated Other Comprehensive Income Loss Before Tax1 AccumulatedOtherComprehensiveIncomeLossBeforeTax1	37045000
CY2020Q4	us-gaap	Available For Sale Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	106000
CY2020Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	734845000
CY2019Q4	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	591009000
CY2019Q4	us-gaap	Accumulated Other Comprehensive Income Loss Before Tax1 AccumulatedOtherComprehensiveIncomeLossBeforeTax1	17841000
CY2019Q4	us-gaap	Available For Sale Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	617000
CY2019Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	608233000
CY2020Q4	us-gaap	Available For Sale Securities Debt Maturities Next Rolling Twelve Months Amortized Cost Basis AvailableForSaleSecuritiesDebtMaturitiesNextRollingTwelveMonthsAmortizedCostBasis	2164000
CY2020Q4	us-gaap	Available For Sale Securities Debt Maturities Next Rolling Twelve Months Fair Value AvailableForSaleSecuritiesDebtMaturitiesNextRollingTwelveMonthsFairValue	2175000
CY2020Q4	us-gaap	Available For Sale Securities Debt Maturities Rolling Year Two Through Five Amortized Cost Basis AvailableForSaleSecuritiesDebtMaturitiesRollingYearTwoThroughFiveAmortizedCostBasis	11543000
CY2020Q4	us-gaap	Available For Sale Securities Debt Maturities Rolling Year Two Through Five Fair Value AvailableForSaleSecuritiesDebtMaturitiesRollingYearTwoThroughFiveFairValue	11850000
CY2020Q4	us-gaap	Available For Sale Securities Debt Maturities Rolling Year Six Through Ten Amortized Cost Basis AvailableForSaleSecuritiesDebtMaturitiesRollingYearSixThroughTenAmortizedCostBasis	35829000
CY2020Q4	us-gaap	Available For Sale Securities Debt Maturities Rolling Year Six Through Ten Fair Value AvailableForSaleSecuritiesDebtMaturitiesRollingYearSixThroughTenFairValue	37960000
CY2020Q4	us-gaap	Available For Sale Securities Debt Maturities Rolling After Year Ten Amortized Cost Basis AvailableForSaleSecuritiesDebtMaturitiesRollingAfterYearTenAmortizedCostBasis	342262000
CY2020	lkfn	Number Of Debt Securities Available For Sale Sold At Fair Value NumberOfDebtSecuritiesAvailableForSaleSoldAtFairValue	17
CY2020Q4	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Less Than Twelve Months Fair Value AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue	26724000
CY2020Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	89000
CY2020Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger	3112000
CY2020Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	17000
CY2020Q4	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	697906000
CY2020Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	734845000
CY2020	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	8018000
CY2019	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	57114000
CY2018	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	15302000
CY2020	us-gaap	Debt Securities Available For Sale Realized Gain Loss Excluding Other Than Temporary Impairment DebtSecuritiesAvailableForSaleRealizedGainLossExcludingOtherThanTemporaryImpairment	433000
CY2019	us-gaap	Debt Securities Available For Sale Realized Gain Loss Excluding Other Than Temporary Impairment DebtSecuritiesAvailableForSaleRealizedGainLossExcludingOtherThanTemporaryImpairment	279000
CY2018	us-gaap	Debt Securities Available For Sale Realized Gain Loss Excluding Other Than Temporary Impairment DebtSecuritiesAvailableForSaleRealizedGainLossExcludingOtherThanTemporaryImpairment	21000
CY2020	us-gaap	Debt Securities Available For Sale Realized Loss DebtSecuritiesAvailableForSaleRealizedLoss	0
CY2019	us-gaap	Debt Securities Available For Sale Realized Loss DebtSecuritiesAvailableForSaleRealizedLoss	137000
CY2018	us-gaap	Debt Securities Available For Sale Realized Loss DebtSecuritiesAvailableForSaleRealizedLoss	71000
CY2019	lkfn	Number Of Debt Securities Available For Sale Sold At Fair Value NumberOfDebtSecuritiesAvailableForSaleSoldAtFairValue	46
CY2018	lkfn	Number Of Debt Securities Available For Sale Sold At Fair Value NumberOfDebtSecuritiesAvailableForSaleSoldAtFairValue	29
CY2020Q4	us-gaap	Debt Securities Available For Sale Restricted DebtSecuritiesAvailableForSaleRestricted	382700000
CY2019Q4	us-gaap	Debt Securities Available For Sale Restricted DebtSecuritiesAvailableForSaleRestricted	59300000
CY2020Q4	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Fair Value AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValue	29836000
CY2020Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Accumulated Loss DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss	106000
CY2019Q4	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Less Than Twelve Months Fair Value AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue	42215000
CY2019Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	342000
CY2019Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger	14174000
CY2019Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	275000
CY2019Q4	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Fair Value AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValue	56389000
CY2019Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Accumulated Loss DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss	617000
CY2020Q4	lkfn	Number Of Available For Sale Securities In Unrealized Loss Positions Qualitative Disclosure Number Of Positions Less Than12 Months NumberOfAvailableForSaleSecuritiesInUnrealizedLossPositionsQualitativeDisclosureNumberOfPositionsLessThan12Months	7
CY2020Q4	lkfn	Number Of Available For Sale Securities In Unrealized Loss Positions Qualitative Disclosure Number Of Positions12 Months Or More NumberOfAvailableForSaleSecuritiesInUnrealizedLossPositionsQualitativeDisclosureNumberOfPositions12MonthsOrMore	1
CY2020Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Number Of Positions DebtSecuritiesAvailableForSaleUnrealizedLossPositionNumberOfPositions	8
CY2019Q4	lkfn	Number Of Available For Sale Securities In Unrealized Loss Positions Qualitative Disclosure Number Of Positions Less Than12 Months NumberOfAvailableForSaleSecuritiesInUnrealizedLossPositionsQualitativeDisclosureNumberOfPositionsLessThan12Months	19
CY2019Q4	lkfn	Number Of Available For Sale Securities In Unrealized Loss Positions Qualitative Disclosure Number Of Positions12 Months Or More NumberOfAvailableForSaleSecuritiesInUnrealizedLossPositionsQualitativeDisclosureNumberOfPositions12MonthsOrMore	6
CY2019Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Number Of Positions DebtSecuritiesAvailableForSaleUnrealizedLossPositionNumberOfPositions	25
CY2020Q4	us-gaap	Loans And Leases Receivable Gross Carrying Amount LoansAndLeasesReceivableGrossCarryingAmount	4657183000
CY2019Q4	us-gaap	Loans And Leases Receivable Gross Carrying Amount LoansAndLeasesReceivableGrossCarryingAmount	4067385000
CY2020Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	61408000
CY2019Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	50652000
CY2020Q4	us-gaap	Loans And Leases Receivable Deferred Income LoansAndLeasesReceivableDeferredIncome	8027000
CY2019Q4	us-gaap	Loans And Leases Receivable Deferred Income LoansAndLeasesReceivableDeferredIncome	1557000
CY2020Q4	us-gaap	Loans And Leases Receivable Net Reported Amount LoansAndLeasesReceivableNetReportedAmount	4587748000
CY2019Q4	us-gaap	Loans And Leases Receivable Net Reported Amount LoansAndLeasesReceivableNetReportedAmount	4015176000
CY2020Q4	us-gaap	Mortgage Loans In Process Of Foreclosure Amount MortgageLoansInProcessOfForeclosureAmount	19000
CY2019Q4	us-gaap	Mortgage Loans In Process Of Foreclosure Amount MortgageLoansInProcessOfForeclosureAmount	1600000
CY2019Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	50652000
CY2020	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	14770000
CY2020	us-gaap	Allowance For Loan And Lease Losses Write Offs AllowanceForLoanAndLeaseLossesWriteOffs	5253000
CY2020	us-gaap	Allowance For Loan And Lease Loss Recovery Of Bad Debts AllowanceForLoanAndLeaseLossRecoveryOfBadDebts	1239000
CY2020	lkfn	Allowance For Loan And Lease Losses Write Offs After Recoveries AllowanceForLoanAndLeaseLossesWriteOffsAfterRecoveries	4014000
CY2020Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	61408000
CY2018Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	48453000
CY2019	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	3235000
CY2019	us-gaap	Allowance For Loan And Lease Losses Write Offs AllowanceForLoanAndLeaseLossesWriteOffs	1910000
CY2019	us-gaap	Allowance For Loan And Lease Loss Recovery Of Bad Debts AllowanceForLoanAndLeaseLossRecoveryOfBadDebts	874000
CY2019	lkfn	Allowance For Loan And Lease Losses Write Offs After Recoveries AllowanceForLoanAndLeaseLossesWriteOffsAfterRecoveries	1036000
CY2019Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	50652000
CY2017Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	47121000
CY2018	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	6400000
CY2018	us-gaap	Allowance For Loan And Lease Losses Write Offs AllowanceForLoanAndLeaseLossesWriteOffs	6111000
CY2018	us-gaap	Allowance For Loan And Lease Loss Recovery Of Bad Debts AllowanceForLoanAndLeaseLossRecoveryOfBadDebts	1043000
CY2018	lkfn	Allowance For Loan And Lease Losses Write Offs After Recoveries AllowanceForLoanAndLeaseLossesWriteOffsAfterRecoveries	5068000
CY2018Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	48453000
CY2020Q4	us-gaap	Financing Receivable Allowance For Credit Losses Individually Evaluated For Impairment1 FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1	8041000
CY2020Q4	us-gaap	Financing Receivable Allowance For Credit Losses Collectively Evaluated For Impairment FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment	53367000
CY2020Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	61408000
CY2020Q4	us-gaap	Financing Receivable Individually Evaluated For Impairment FinancingReceivableIndividuallyEvaluatedForImpairment	20179000
CY2020Q4	us-gaap	Financing Receivable Collectively Evaluated For Impairment FinancingReceivableCollectivelyEvaluatedForImpairment	4628977000
CY2020Q4	us-gaap	Loans And Leases Receivable Net Of Deferred Income LoansAndLeasesReceivableNetOfDeferredIncome	4649156000
CY2019Q4	us-gaap	Financing Receivable Allowance For Credit Losses Individually Evaluated For Impairment1 FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1	10384000
CY2019Q4	us-gaap	Financing Receivable Allowance For Credit Losses Collectively Evaluated For Impairment FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment	40268000
CY2019Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	50652000
CY2019Q4	us-gaap	Financing Receivable Individually Evaluated For Impairment FinancingReceivableIndividuallyEvaluatedForImpairment	27829000
CY2019Q4	us-gaap	Financing Receivable Recorded Investment Nonaccrual Status FinancingReceivableRecordedInvestmentNonaccrualStatus	18675000
CY2019Q4	lkfn	Financing Receivable Recorded Investment Past Due And Nonaccrual Status FinancingReceivableRecordedInvestmentPastDueAndNonaccrualStatus	20194000
CY2019Q4	us-gaap	Loans And Leases Receivable Net Of Deferred Income LoansAndLeasesReceivableNetOfDeferredIncome	4065828000
CY2020Q4	lkfn	Loans Modified In Troubled Debt Restructured Loans LoansModifiedInTroubledDebtRestructuredLoans	5500000
CY2019Q4	lkfn	Loans Modified In Troubled Debt Restructured Loans LoansModifiedInTroubledDebtRestructuredLoans	2500000
CY2019Q4	us-gaap	Financing Receivable Collectively Evaluated For Impairment FinancingReceivableCollectivelyEvaluatedForImpairment	4037999000
CY2019Q4	us-gaap	Loans And Leases Receivable Net Of Deferred Income LoansAndLeasesReceivableNetOfDeferredIncome	4065828000
CY2020Q4	us-gaap	Impaired Financing Receivable Unpaid Principal Balance ImpairedFinancingReceivableUnpaidPrincipalBalance	22939000
CY2020Q4	us-gaap	Impaired Financing Receivable Recorded Investment ImpairedFinancingReceivableRecordedInvestment	20179000
CY2020Q4	us-gaap	Financing Receivable Allowance For Credit Losses Individually Evaluated For Impairment1 FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1	8041000
CY2019Q4	us-gaap	Impaired Financing Receivable Unpaid Principal Balance ImpairedFinancingReceivableUnpaidPrincipalBalance	30422000
CY2019Q4	us-gaap	Impaired Financing Receivable Recorded Investment ImpairedFinancingReceivableRecordedInvestment	27829000
CY2019Q4	us-gaap	Financing Receivable Allowance For Credit Losses Individually Evaluated For Impairment1 FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1	10384000
CY2020	us-gaap	Impaired Financing Receivable Average Recorded Investment ImpairedFinancingReceivableAverageRecordedInvestment	23362000
CY2020	us-gaap	Impaired Financing Receivable Interest Income Accrual Method ImpairedFinancingReceivableInterestIncomeAccrualMethod	390000
CY2020	us-gaap	Impaired Financing Receivable Interest Income Cash Basis Method ImpairedFinancingReceivableInterestIncomeCashBasisMethod	385000
CY2019	us-gaap	Impaired Financing Receivable Average Recorded Investment ImpairedFinancingReceivableAverageRecordedInvestment	26464000
CY2019	us-gaap	Impaired Financing Receivable Interest Income Accrual Method ImpairedFinancingReceivableInterestIncomeAccrualMethod	770000
CY2019	us-gaap	Impaired Financing Receivable Interest Income Cash Basis Method ImpairedFinancingReceivableInterestIncomeCashBasisMethod	651000
CY2018	us-gaap	Impaired Financing Receivable Average Recorded Investment ImpairedFinancingReceivableAverageRecordedInvestment	18035000
CY2018	us-gaap	Impaired Financing Receivable Interest Income Accrual Method ImpairedFinancingReceivableInterestIncomeAccrualMethod	442000
CY2018	us-gaap	Impaired Financing Receivable Interest Income Cash Basis Method ImpairedFinancingReceivableInterestIncomeCashBasisMethod	306000
CY2020Q4	us-gaap	Financing Receivable Recorded Investment Current FinancingReceivableRecordedInvestmentCurrent	4635787000
CY2020Q4	us-gaap	Financing Receivable Recorded Investment Past Due FinancingReceivableRecordedInvestmentPastDue	1267000
CY2020Q4	us-gaap	Financing Receivable Recorded Investment90 Days Past Due And Still Accruing FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing	116000
CY2020Q4	us-gaap	Financing Receivable Recorded Investment Nonaccrual Status FinancingReceivableRecordedInvestmentNonaccrualStatus	11986000
CY2020Q4	lkfn	Financing Receivable Recorded Investment Past Due And Nonaccrual Status FinancingReceivableRecordedInvestmentPastDueAndNonaccrualStatus	13369000
CY2020Q4	us-gaap	Loans And Leases Receivable Net Of Deferred Income LoansAndLeasesReceivableNetOfDeferredIncome	4649156000
CY2019Q4	us-gaap	Financing Receivable Recorded Investment Current FinancingReceivableRecordedInvestmentCurrent	4045634000
CY2019Q4	us-gaap	Financing Receivable Recorded Investment Past Due FinancingReceivableRecordedInvestmentPastDue	1474000
CY2019Q4	us-gaap	Financing Receivable Recorded Investment90 Days Past Due And Still Accruing FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing	45000
CY2020Q4	lkfn	Loans Receivable Accruing Troubled Debt Restructured Loans LoansReceivableAccruingTroubledDebtRestructuredLoans	5237000
CY2019Q4	lkfn	Loans Receivable Accruing Troubled Debt Restructured Loans LoansReceivableAccruingTroubledDebtRestructuredLoans	5909000
CY2020Q4	lkfn	Loans Receivable Nonaccrual Troubled Debt Restructured Loans LoansReceivableNonaccrualTroubledDebtRestructuredLoans	6476000
CY2019Q4	lkfn	Loans Receivable Nonaccrual Troubled Debt Restructured Loans LoansReceivableNonaccrualTroubledDebtRestructuredLoans	3188000
CY2020Q4	lkfn	Financing Receivable Modifications FinancingReceivableModifications	11713000
CY2019Q4	lkfn	Financing Receivable Modifications FinancingReceivableModifications	9097000
CY2020	lkfn	Financing Receivable Loan Portfolio Deferrals Covid19 FinancingReceivableLoanPortfolioDeferralsCovid19	100700000
CY2020	lkfn	Financing Receivable Loan Portfolio Deferrals Covid19 Borrowers FinancingReceivableLoanPortfolioDeferralsCovid19Borrowers	49
CY2020	lkfn	Financing Receivable Loan Portfolio Deferrals Covid19 Percentage Of Loan Portfolio FinancingReceivableLoanPortfolioDeferralsCovid19PercentageOfLoanPortfolio	0.022
CY2020	lkfn	Borrowers Percentage BorrowersPercentage	90
CY2019	us-gaap	Financing Receivable Modifications Subsequent Default Number Of Contracts1 FinancingReceivableModificationsSubsequentDefaultNumberOfContracts1	1
CY2019	us-gaap	Financing Receivable Modifications Subsequent Default Recorded Investment1 FinancingReceivableModificationsSubsequentDefaultRecordedInvestment1	601000
CY2020	lkfn	Loan Amount Of Credit Quality Analysis LoanAmountOfCreditQualityAnalysis	250000
CY2020Q4	us-gaap	Loans And Leases Receivable Net Of Deferred Income LoansAndLeasesReceivableNetOfDeferredIncome	4649156000
CY2019Q4	us-gaap	Loans And Leases Receivable Net Of Deferred Income LoansAndLeasesReceivableNetOfDeferredIncome	4065828000
CY2020Q4	us-gaap	Servicing Asset At Fair Value Amount ServicingAssetAtFairValueAmount	4200000
CY2020	us-gaap	Servicing Asset At Amortized Value Valuation Allowance ServicingAssetAtAmortizedValueValuationAllowance	715000
CY2020Q4	us-gaap	Servicing Asset At Amortized Value ServicingAssetAtAmortizedValue	3500000
CY2020	lkfn	Percentage Of Discount From Appraised Value PercentageOfDiscountFromAppraisedValue	0.037
CY2020	lkfn	Weighted Average Maturity Of Residential Mortgages WeightedAverageMaturityOfResidentialMortgages	P20Y
CY2020	us-gaap	Servicing Assets And Servicing Liabilities At Fair Value Assumptions Used To Estimate Fair Value Qualitative Information ServicingAssetsAndServicingLiabilitiesAtFairValueAssumptionsUsedToEstimateFairValueQualitativeInformation	204
CY2020	us-gaap	Servicing Assets And Servicing Liabilities At Fair Value Assumptions Used To Estimate Fair Value Discount Rate ServicingAssetsAndServicingLiabilitiesAtFairValueAssumptionsUsedToEstimateFairValueDiscountRate	0.094
CY2019	us-gaap	Servicing Assets And Servicing Liabilities At Fair Value Assumptions Used To Estimate Fair Value Qualitative Information ServicingAssetsAndServicingLiabilitiesAtFairValueAssumptionsUsedToEstimateFairValueQualitativeInformation	118
CY2019	us-gaap	Servicing Assets And Servicing Liabilities At Fair Value Assumptions Used To Estimate Fair Value Discount Rate ServicingAssetsAndServicingLiabilitiesAtFairValueAssumptionsUsedToEstimateFairValueDiscountRate	0.094
CY2019Q4	lkfn	Other Time Deposits OtherTimeDeposits	281934000
CY2020Q4	lkfn	Time Deposits100000 To250000 TimeDeposits100000To250000	271337000
CY2020Q4	us-gaap	Land Land	12472000
CY2019Q4	us-gaap	Land Land	12511000
CY2020Q4	lkfn	Premises And Improvements Gross PremisesAndImprovementsGross	55682000
CY2019Q4	lkfn	Premises And Improvements Gross PremisesAndImprovementsGross	53424000
CY2020Q4	lkfn	Equipment And Furniture Gross EquipmentAndFurnitureGross	38133000
CY2019Q4	lkfn	Equipment And Furniture Gross EquipmentAndFurnitureGross	38691000
CY2020Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	106287000
CY2019Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	104626000
CY2020Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	46989000
CY2019Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	44261000
CY2020Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	59298000
CY2019Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	60365000
CY2020Q4	us-gaap	Goodwill Gross GoodwillGross	5000000.0
CY2020Q4	us-gaap	Noninterest Bearing Deposit Liabilities NoninterestBearingDepositLiabilities	1538331000
CY2019Q4	us-gaap	Noninterest Bearing Deposit Liabilities NoninterestBearingDepositLiabilities	983307000
CY2020Q4	us-gaap	Deposits Savings Deposits DepositsSavingsDeposits	312702000
CY2019Q4	us-gaap	Deposits Savings Deposits DepositsSavingsDeposits	234508000
CY2020Q4	lkfn	Other Time Deposits OtherTimeDeposits	239582000
CY2019Q4	lkfn	Time Deposits100000 To250000 TimeDeposits100000To250000	291805000
CY2020Q4	lkfn	Timedeposits250000 Ormore Timedeposits250000Ormore	513900000
CY2019Q4	lkfn	Timedeposits250000 Ormore Timedeposits250000Ormore	618328000
CY2020Q4	us-gaap	Deposits Deposits	5036805000
CY2019Q4	us-gaap	Deposits Deposits	4133819000
CY2020Q4	us-gaap	Time Deposit Maturities Year One TimeDepositMaturitiesYearOne	757059000
CY2020Q4	us-gaap	Time Deposit Maturities Year Two TimeDepositMaturitiesYearTwo	195703000
CY2020Q4	us-gaap	Time Deposit Maturities Year Three TimeDepositMaturitiesYearThree	27767000
CY2020Q4	us-gaap	Time Deposit Maturities Year Four TimeDepositMaturitiesYearFour	34086000
CY2020Q4	us-gaap	Time Deposit Maturities Year Five TimeDepositMaturitiesYearFive	9294000
CY2020Q4	us-gaap	Time Deposit Maturities After Year Five TimeDepositMaturitiesAfterYearFive	910000
CY2020Q4	us-gaap	Time Deposits TimeDeposits	1024819000
CY2020Q4	lkfn	Deposits Available To Bank DepositsAvailableToBank	100000000.0
CY2020Q4	lkfn	Amount Of Deposits Drawn AmountOfDepositsDrawn	10100000
CY2019Q4	lkfn	Deposits Available To Bank DepositsAvailableToBank	200000000.0
CY2019Q4	lkfn	Amount Of Deposits Drawn AmountOfDepositsDrawn	75100000
CY2020Q4	us-gaap	Other Short Term Borrowings OtherShortTermBorrowings	75000000
CY2019Q4	us-gaap	Other Short Term Borrowings OtherShortTermBorrowings	170000000
CY2020Q4	lkfn	Pledged Financial Instruments Not Separately Reported Residential Mortgage Loans And Mortgage Related Securities Available For Sale For Federal Home Bank Debt PledgedFinancialInstrumentsNotSeparatelyReportedResidentialMortgageLoansAndMortgageRelatedSecuritiesAvailableForSaleForFederalHomeBankDebt	451900000
CY2019Q4	lkfn	Pledged Financial Instruments Not Separately Reported Residential Mortgage Loans And Mortgage Related Securities Available For Sale For Federal Home Bank Debt PledgedFinancialInstrumentsNotSeparatelyReportedResidentialMortgageLoansAndMortgageRelatedSecuritiesAvailableForSaleForFederalHomeBankDebt	453200000
CY2019Q4	us-gaap	Federal Home Loan Bank Stock FederalHomeLoanBankStock	10400000
CY2020Q4	us-gaap	Federal Home Loan Bank Stock FederalHomeLoanBankStock	10400000
CY2020Q4	lkfn	Borrowing Capacity Federal Home Loan Bank BorrowingCapacityFederalHomeLoanBank	800000000.0
CY2020Q4	us-gaap	Line Of Credit Facility Current Borrowing Capacity LineOfCreditFacilityCurrentBorrowingCapacity	317300000
CY2020Q4	lkfn	Pledged Financial Instruments Not Separately Reported Commerical Loans For Federal Reserve Bank Debt PledgedFinancialInstrumentsNotSeparatelyReportedCommericalLoansForFederalReserveBankDebt	557200000
CY2019Q4	lkfn	Pledged Financial Instruments Not Separately Reported Commerical Loans For Federal Reserve Bank Debt PledgedFinancialInstrumentsNotSeparatelyReportedCommericalLoansForFederalReserveBankDebt	446900000
CY2020Q4	lkfn	Borrowing Capacity Federal Reserve Bank BorrowingCapacityFederalReserveBank	490400000
CY2019Q4	lkfn	Borrowing Capacity Federal Reserve Bank BorrowingCapacityFederalReserveBank	339500000
CY2020Q4	us-gaap	Line Of Credit Facility Remaining Borrowing Capacity LineOfCreditFacilityRemainingBorrowingCapacity	350000000.0
CY2019Q4	us-gaap	Line Of Credit Facility Remaining Borrowing Capacity LineOfCreditFacilityRemainingBorrowingCapacity	325000000.0
CY2019Q4	us-gaap	Line Of Credit Facility Remaining Borrowing Capacity LineOfCreditFacilityRemainingBorrowingCapacity	325000000.0
CY2020	us-gaap	Schedule Of Repurchase Agreements ScheduleOfRepurchaseAgreements	<p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-indent:36pt;margin:0pt;"><span style="margin-bottom:12pt;visibility:hidden;"></span></p><table style="border-collapse:collapse;font-size:16pt;height:max-content;margin-left:auto;margin-right:auto;padding-left:0pt;padding-right:0pt;width:100%;"><tr style="height:1pt;"><td style="vertical-align:bottom;width:64.37%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><span style="font-size:1pt;visibility:hidden;"></span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.89%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><span style="font-size:1pt;visibility:hidden;"></span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><span style="font-size:1pt;visibility:hidden;"></span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:7.91%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><span style="font-size:1pt;visibility:hidden;"></span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:2.47%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><span style="font-size:1pt;visibility:hidden;"></span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><span style="font-size:1pt;visibility:hidden;"></span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:7.91%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><span style="font-size:1pt;visibility:hidden;"></span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:2.47%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><span style="font-size:1pt;visibility:hidden;"></span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><span style="font-size:1pt;visibility:hidden;"></span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:7.92%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><span style="font-size:1pt;visibility:hidden;"></span></p></div></div></td><td style="vertical-align:bottom;white-space:nowrap;width:1.54%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><span style="font-size:1pt;visibility:hidden;"></span></p></div></div></td></tr><tr><td style="vertical-align:bottom;width:64.37%;border-bottom:1.5pt solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;padding-left:7.2pt;text-indent:-7.2pt;margin:0pt 0pt 0.05pt 0pt;">(dollars in thousands)</p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.89%;border-bottom:1.5pt solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><b style="font-weight:bold;"> </b></p></td><td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:9.07%;border-bottom:1.5pt solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-align:center;margin:0pt 0pt 0.05pt 0pt;"><b style="font-weight:bold;">2020</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.47%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"> </p></td><td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:9.07%;border-bottom:1.5pt solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-align:center;margin:0pt 0pt 0.05pt 0pt;">2019</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.47%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"> </p></td><td colspan="2" style="vertical-align:bottom;white-space:nowrap;width:9.08%;border-bottom:1.5pt solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-align:center;margin:0pt 0pt 0.05pt 0pt;">2018</p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.54%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><span style="visibility:hidden;"></span></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:64.37%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;padding-left:7.2pt;text-indent:-7.2pt;margin:0pt 0pt 0.05pt 0pt;">Securities sold under agreements to repurchase</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.89%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><span style="visibility:hidden;"></span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:7.91%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-align:right;margin:0pt 0pt 0.05pt 0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.47%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><span style="visibility:hidden;"></span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:7.91%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-align:right;margin:0pt 0pt 0.05pt 0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.47%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><span style="visibility:hidden;"></span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:7.92%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-align:right;margin:0pt 0pt 0.05pt 0pt;"><span style="visibility:hidden;"></span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.54%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><span style="visibility:hidden;"></span></p></td></tr><tr><td style="vertical-align:bottom;width:64.37%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;padding-left:7.2pt;text-indent:-7.2pt;margin:0pt 0pt 0.05pt 6pt;">Outstanding at year end</p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.89%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><span style="font-weight:bold;visibility:hidden;"></span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><b style="font-weight:bold;">$</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:7.91%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-align:right;margin:0pt 3pt 0.05pt 0pt;"><b style="font-weight:bold;"> —</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.47%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><span style="visibility:hidden;"></span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:7.91%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-align:right;margin:0pt 3pt 0.05pt 0pt;"> —</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.47%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><span style="visibility:hidden;"></span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:7.92%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-align:right;margin:0pt 3pt 0.05pt 0pt;">75,555</p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.54%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><span style="visibility:hidden;"></span></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:64.37%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;padding-left:7.2pt;text-indent:-7.2pt;margin:0pt 0pt 0.05pt 6pt;">Approximate average interest rate at year end</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.89%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><span style="font-weight:bold;visibility:hidden;"></span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><b style="font-weight:bold;"> </b></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:7.91%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-align:right;margin:0pt 3pt 0.05pt 0pt;"><b style="font-weight:bold;"> —</b></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.47%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;">% </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:7.91%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-align:right;margin:0pt 3pt 0.05pt 0pt;"> —</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.47%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;">% </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:7.92%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-align:right;margin:0pt 3pt 0.05pt 0pt;"> 0.74</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.54%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;">%</p></td></tr><tr><td style="vertical-align:bottom;width:64.37%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;padding-left:7.2pt;text-indent:-7.2pt;margin:0pt 0pt 0.05pt 6pt;">Highest amount outstanding as of any month end during the year</p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.89%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><span style="font-weight:bold;visibility:hidden;"></span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><b style="font-weight:bold;">$</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:7.91%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-align:right;margin:0pt 3pt 0.05pt 0pt;"><b style="font-weight:bold;"> —</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.47%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><span style="visibility:hidden;"></span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:7.91%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-align:right;margin:0pt 3pt 0.05pt 0pt;"> 72,814</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.47%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><span style="visibility:hidden;"></span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:7.92%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-align:right;margin:0pt 3pt 0.05pt 0pt;"> 106,239</p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.54%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><span style="visibility:hidden;"></span></p></td></tr><tr><td style="background-color:#cceeff;vertical-align:bottom;width:64.37%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;padding-left:7.2pt;text-indent:-7.2pt;margin:0pt 0pt 0.05pt 6pt;">Approximate average outstanding during the year</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.89%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><span style="font-weight:bold;visibility:hidden;"></span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><b style="font-weight:bold;"> </b></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:7.91%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-align:right;margin:0pt 3pt 0.05pt 0pt;"><b style="font-weight:bold;"> —</b></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.47%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><span style="visibility:hidden;"></span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:7.91%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-align:right;margin:0pt 3pt 0.05pt 0pt;"> 15,104</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:2.47%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><span style="visibility:hidden;"></span></p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"> </p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:7.92%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-align:right;margin:0pt 3pt 0.05pt 0pt;"> 86,874</p></td><td style="background-color:#cceeff;vertical-align:bottom;white-space:nowrap;width:1.54%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><span style="visibility:hidden;"></span></p></td></tr><tr><td style="vertical-align:bottom;width:64.37%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;padding-left:7.2pt;text-indent:-7.2pt;margin:0pt 0pt 0.05pt 6pt;">Approximate average interest rate during the year</p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.89%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><span style="font-weight:bold;visibility:hidden;"></span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"><b style="font-weight:bold;"> </b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:7.91%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-align:right;margin:0pt 3pt 0.05pt 0pt;"><b style="font-weight:bold;"> —</b></p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.47%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;">% </p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:7.91%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-align:right;margin:0pt 3pt 0.05pt 0pt;"> 0.86</p></td><td style="vertical-align:bottom;white-space:nowrap;width:2.47%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;">%</p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.15%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;"> </p></td><td style="vertical-align:bottom;white-space:nowrap;width:7.92%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-align:right;margin:0pt 3.75pt 0.05pt 0pt;"><span style="font-size:11pt;"> 0.58</span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.54%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt 0pt 0.05pt 0pt;">%</p></td></tr></table>
CY2018Q4	us-gaap	Securities Sold Under Agreements To Repurchase SecuritiesSoldUnderAgreementsToRepurchase	75555000
CY2018Q4	lkfn	Securities Sold Under Agreements To Repurchase Weighted Average Interest Rate SecuritiesSoldUnderAgreementsToRepurchaseWeightedAverageInterestRate	0.0074
CY2019Q4	lkfn	Securities Sold Under Agreements To Repurchase Maximum Month End Balance SecuritiesSoldUnderAgreementsToRepurchaseMaximumMonthEndBalance	72814000
CY2018Q4	lkfn	Securities Sold Under Agreements To Repurchase Maximum Month End Balance SecuritiesSoldUnderAgreementsToRepurchaseMaximumMonthEndBalance	106239000
CY2019	lkfn	Securities Sold Under Agreements To Repurchase Average Daily Balance SecuritiesSoldUnderAgreementsToRepurchaseAverageDailyBalance	15104000
CY2018	lkfn	Securities Sold Under Agreements To Repurchase Average Daily Balance SecuritiesSoldUnderAgreementsToRepurchaseAverageDailyBalance	86874000
CY2019	lkfn	Securities Sold Under Agreements To Repurchase Average Interest Rate SecuritiesSoldUnderAgreementsToRepurchaseAverageInterestRate	0.0086
CY2018	lkfn	Securities Sold Under Agreements To Repurchase Average Interest Rate SecuritiesSoldUnderAgreementsToRepurchaseAverageInterestRate	0.0058
	us-gaap	Proceeds From Issuance Of Trust Preferred Securities ProceedsFromIssuanceOfTrustPreferredSecurities	30000000.0
	lkfn	Proceeds From Issuance Of Subordinated Debentures ProceedsFromIssuanceOfSubordinatedDebentures	30900000
CY2020Q4	lkfn	Integral Multiple Subordinated Debentures May Be Redeemed In IntegralMultipleSubordinatedDebenturesMayBeRedeemedIn	1000
CY2020Q4	lkfn	Percentage Of Principal Amount Subordinated Debentures May Be Redeemed At PercentageOfPrincipalAmountSubordinatedDebenturesMayBeRedeemedAt	1
CY2019	us-gaap	Payments For Repurchase Of Trust Preferred Securities PaymentsForRepurchaseOfTrustPreferredSecurities	30000000.0
CY2019Q4	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	928000
CY2019Q4	lkfn	Percentage Of Principal Amount Subordinated Debentures May Be Redeemed At PercentageOfPrincipalAmountSubordinatedDebenturesMayBeRedeemedAt	1
CY2019	us-gaap	Debt Instrument Redemption Price Percentage Of Principal Amount Redeemed DebtInstrumentRedemptionPricePercentageOfPrincipalAmountRedeemed	1
CY2019	us-gaap	Debt Instrument Redemption Price Percentage DebtInstrumentRedemptionPricePercentage	1
CY2018	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	1462000
CY2020	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-289000
CY2018	us-gaap	Deferred Other Tax Expense Benefit DeferredOtherTaxExpenseBenefit	-408000
CY2019	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-78000
CY2020	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	1484000
CY2019	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	1394000
CY2020	lkfn	Potential Cash Payments Under Employment Agreements PotentialCashPaymentsUnderEmploymentAgreements	5200000
CY2018	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	-408000
CY2020	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	20032000
CY2019	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	19430000
CY2018	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	16871000
CY2020	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-1688000
CY2019	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-408000
CY2018	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	707000
CY2020	lkfn	Effective Income Tax Rate Reconciliation Deduction Long Term Incentive Plan Amount EffectiveIncomeTaxRateReconciliationDeductionLongTermIncentivePlanAmount	58000
CY2019	lkfn	Effective Income Tax Rate Reconciliation Deduction Long Term Incentive Plan Amount EffectiveIncomeTaxRateReconciliationDeductionLongTermIncentivePlanAmount	421000
CY2018	us-gaap	Income Tax Reconciliation Deductions Other IncomeTaxReconciliationDeductionsOther	303000
CY2018	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-99000
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	19539000
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	20338000
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	18533000
CY2018	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.21
CY2019	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.21
CY2020	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.21
CY2020	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	21814000
CY2019	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	22551000
CY2018	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	20778000
CY2020	lkfn	Interest Income Securitie Tax Exempt InterestIncomeSecuritieTaxExempt	1925000
CY2019	lkfn	Interest Income Securitie Tax Exempt InterestIncomeSecuritieTaxExempt	1682000
CY2018	lkfn	Interest Income Securitie Tax Exempt InterestIncomeSecuritieTaxExempt	1434000
CY2020	us-gaap	Income Tax Reconciliation Nondeductible Expense IncomeTaxReconciliationNondeductibleExpense	117000
CY2019	us-gaap	Income Tax Reconciliation Nondeductible Expense IncomeTaxReconciliationNondeductibleExpense	194000
CY2018	us-gaap	Income Tax Reconciliation Nondeductible Expense IncomeTaxReconciliationNondeductibleExpense	165000
CY2020	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	944000
CY2019	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	1040000
CY2018	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	1077000
CY2020	lkfn	Income Tax Reconciliation Deductions Captive Insurance Premium Income IncomeTaxReconciliationDeductionsCaptiveInsurancePremiumIncome	227000
CY2019	lkfn	Income Tax Reconciliation Deductions Captive Insurance Premium Income IncomeTaxReconciliationDeductionsCaptiveInsurancePremiumIncome	310000
CY2018	lkfn	Income Tax Reconciliation Deductions Captive Insurance Premium Income IncomeTaxReconciliationDeductionsCaptiveInsurancePremiumIncome	292000
CY2020	us-gaap	Income Tax Reconciliation Tax Credits IncomeTaxReconciliationTaxCredits	540000
CY2019	us-gaap	Income Tax Reconciliation Tax Credits IncomeTaxReconciliationTaxCredits	548000
CY2018	us-gaap	Income Tax Reconciliation Tax Credits IncomeTaxReconciliationTaxCredits	412000
CY2020	us-gaap	Income Tax Reconciliation Deductions Other IncomeTaxReconciliationDeductionsOther	595000
CY2019	us-gaap	Income Tax Reconciliation Deductions Other IncomeTaxReconciliationDeductionsOther	573000
CY2018	lkfn	Effective Income Tax Rate Reconciliation Deduction Long Term Incentive Plan Amount EffectiveIncomeTaxRateReconciliationDeductionLongTermIncentivePlanAmount	641000
CY2018	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	-408000
CY2020	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	9000
CY2019	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	87000
CY2018	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	3000
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	19539000
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	20338000
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	18533000
CY2020Q4	lkfn	Deferred Tax Assets Bad Debts DeferredTaxAssetsBadDebts	15634000
CY2019Q4	lkfn	Deferred Tax Assets Bad Debts DeferredTaxAssetsBadDebts	12945000
CY2020Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Employee Compensation DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeCompensation	2006000
CY2019Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Employee Compensation DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeCompensation	1505000
CY2020Q4	lkfn	Deferred Tax Assets Nonaccrual Loan Interest DeferredTaxAssetsNonaccrualLoanInterest	892000
CY2019Q4	lkfn	Deferred Tax Assets Nonaccrual Loan Interest DeferredTaxAssetsNonaccrualLoanInterest	1104000
CY2020Q4	lkfn	Deferred Tax Assets Long Term Incentive Plan DeferredTaxAssetsLongTermIncentivePlan	1212000
CY2019Q4	lkfn	Deferred Tax Assets Long Term Incentive Plan DeferredTaxAssetsLongTermIncentivePlan	2281000
CY2020Q4	lkfn	Deferred Tax Assets Lease Liability DeferredTaxAssetsLeaseLiability	1190000
CY2019Q4	lkfn	Deferred Tax Assets Lease Liability DeferredTaxAssetsLeaseLiability	1303000
CY2020Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	745000
CY2019Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	510000
CY2020Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	21679000
CY2019Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	19648000
CY2020Q4	lkfn	Deferred Tax Liabilities Depreciation DeferredTaxLiabilitiesDepreciation	4718000
CY2019Q4	lkfn	Deferred Tax Liabilities Depreciation DeferredTaxLiabilitiesDepreciation	4741000
CY2020Q4	us-gaap	Deferred Tax Liabilities Mortgage Servicing Rights DeferredTaxLiabilitiesMortgageServicingRights	1162000
CY2019Q4	us-gaap	Deferred Tax Liabilities Mortgage Servicing Rights DeferredTaxLiabilitiesMortgageServicingRights	1019000
CY2020Q4	lkfn	Deferred Tax Liabilities State Taxes DeferredTaxLiabilitiesStateTaxes	524000
CY2019Q4	lkfn	Deferred Tax Liabilities State Taxes DeferredTaxLiabilitiesStateTaxes	464000
CY2020Q4	us-gaap	Deferred Tax Liabilities Goodwill And Intangible Assets Intangible Assets DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets	1265000
CY2019Q4	us-gaap	Deferred Tax Liabilities Goodwill And Intangible Assets Intangible Assets DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets	1270000
CY2020Q4	lkfn	Deferred Tax Liabilities Spill Over Dividend DeferredTaxLiabilitiesSpillOverDividend	1180000
CY2019Q4	lkfn	Deferred Tax Liabilities Spill Over Dividend DeferredTaxLiabilitiesSpillOverDividend	1401000
CY2020Q4	us-gaap	Deferred Tax Liabilities Prepaid Expenses DeferredTaxLiabilitiesPrepaidExpenses	948000
CY2019Q4	us-gaap	Deferred Tax Liabilities Prepaid Expenses DeferredTaxLiabilitiesPrepaidExpenses	795000
CY2020Q4	lkfn	Deferred Tax Liabilities Lease Right Of Use Assets DeferredTaxLiabilitiesLeaseRightOfUseAssets	1190000
CY2019Q4	lkfn	Deferred Tax Liabilities Lease Right Of Use Assets DeferredTaxLiabilitiesLeaseRightOfUseAssets	1303000
CY2020Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	442000
CY2019Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	382000
CY2020Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	11429000
CY2019Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	11375000
CY2020Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	0
CY2019Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	0
CY2020Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	10250000
CY2019Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	8273000
CY2020Q4	lkfn	Deferred Tax Assets Unrealized Gain Losses On Available For Sale Securities Gross DeferredTaxAssetsUnrealizedGainLossesOnAvailableForSaleSecuritiesGross	-7800000
CY2019Q4	lkfn	Deferred Tax Assets Unrealized Gain Losses On Available For Sale Securities Gross DeferredTaxAssetsUnrealizedGainLossesOnAvailableForSaleSecuritiesGross	-3600000
CY2020Q4	lkfn	Deferred Tax Liabilities Allocated To Benefit Plan DeferredTaxLiabilitiesAllocatedToBenefitPlan	476000
CY2019Q4	lkfn	Deferred Tax Liabilities Allocated To Benefit Plan DeferredTaxLiabilitiesAllocatedToBenefitPlan	512000
CY2019Q4	us-gaap	Loans And Leases Receivable Related Parties LoansAndLeasesReceivableRelatedParties	83980000
CY2018Q4	us-gaap	Loans And Leases Receivable Related Parties LoansAndLeasesReceivableRelatedParties	83546000
CY2018	lkfn	Share Based Compensation Arrangement By Share Based Payment Award Plan Modification ShareBasedCompensationArrangementByShareBasedPaymentAwardPlanModification	0
CY2019	lkfn	Share Based Compensation Arrangement By Share Based Payment Award Plan Modification ShareBasedCompensationArrangementByShareBasedPaymentAwardPlanModification	0
CY2020	us-gaap	Loans And Leases Receivable Related Parties Additions LoansAndLeasesReceivableRelatedPartiesAdditions	120049000
CY2019	us-gaap	Loans And Leases Receivable Related Parties Additions LoansAndLeasesReceivableRelatedPartiesAdditions	55465000
CY2020	lkfn	Effect Of Changes In Related Parties EffectOfChangesInRelatedParties	1650000
CY2019	lkfn	Effect Of Changes In Related Parties EffectOfChangesInRelatedParties	-5967000
CY2020	us-gaap	Loans And Leases Receivable Related Parties Proceeds LoansAndLeasesReceivableRelatedPartiesProceeds	100985000
CY2019	us-gaap	Loans And Leases Receivable Related Parties Proceeds LoansAndLeasesReceivableRelatedPartiesProceeds	49064000
CY2020Q4	us-gaap	Loans And Leases Receivable Related Parties LoansAndLeasesReceivableRelatedParties	104694000
CY2019Q4	us-gaap	Loans And Leases Receivable Related Parties LoansAndLeasesReceivableRelatedParties	83980000
CY2020Q4	us-gaap	Due To Related Parties Current And Noncurrent DueToRelatedPartiesCurrentAndNoncurrent	36800000
CY2019Q4	us-gaap	Due To Related Parties Current And Noncurrent DueToRelatedPartiesCurrentAndNoncurrent	33300000
CY2008Q2	lkfn	Share Based Compensation Shares Authorized Under Equity Incentive Plans ShareBasedCompensationSharesAuthorizedUnderEquityIncentivePlans	1125000
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Available For Grant ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant	590460
CY2020	us-gaap	Employee Stock Ownership Plan Esop Compensation Expense EmployeeStockOwnershipPlanESOPCompensationExpense	1800000
CY2019	us-gaap	Employee Stock Ownership Plan Esop Compensation Expense EmployeeStockOwnershipPlanESOPCompensationExpense	4200000
CY2018	us-gaap	Employee Stock Ownership Plan Esop Compensation Expense EmployeeStockOwnershipPlanESOPCompensationExpense	5600000
CY2020	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	461000
CY2019	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	1100000
CY2018	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	1500000
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross	0
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross	0
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross	0
CY2020	lkfn	Share Based Compensation Arrangement By Share Based Payment Award Plan Modification ShareBasedCompensationArrangementByShareBasedPaymentAwardPlanModification	0
CY2020Q4	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Stock Options EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedStockOptions	0
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	0
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	243000
CY2019	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	0
CY2018	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	118000
CY2020	us-gaap	Employee Service Share Based Compensation Tax Benefit From Exercise Of Stock Options EmployeeServiceShareBasedCompensationTaxBenefitFromExerciseOfStockOptions	0
CY2019	us-gaap	Employee Service Share Based Compensation Tax Benefit From Exercise Of Stock Options EmployeeServiceShareBasedCompensationTaxBenefitFromExerciseOfStockOptions	0
CY2018	us-gaap	Employee Service Share Based Compensation Tax Benefit From Exercise Of Stock Options EmployeeServiceShareBasedCompensationTaxBenefitFromExerciseOfStockOptions	0
CY2020	us-gaap	Description Of Regulatory Requirements Capital Adequacy Purposes DescriptionOfRegulatoryRequirementsCapitalAdequacyPurposes	Under the Basel III rule, the Company must hold a capital conservation buffer above the adequately capitalized risk-based capital ratios. The capital conservation buffer was phased in from 0.000% for 2015 to 2.50% by 2019. The capital conservation buffer for 2020 and 2019 was 2.50%. The net unrealized gain or loss on available-for-sale securities is not included in computing regulatory capital
CY2020Q4	us-gaap	Statutory Accounting Practices Statutory Amount Available For Dividend Payments StatutoryAccountingPracticesStatutoryAmountAvailableForDividendPayments	86400000
CY2020Q4	us-gaap	Derivative Fair Value Of Derivative Asset DerivativeFairValueOfDerivativeAsset	21764000
CY2020Q4	lkfn	Derivative Asset Net Value Offset DerivativeAssetNetValueOffset	21764000
CY2020Q4	us-gaap	Derivative Assets DerivativeAssets	21764000
CY2020Q4	us-gaap	Derivative Fair Value Of Derivative Liability DerivativeFairValueOfDerivativeLiability	21794000
CY2020Q4	lkfn	Derivative Liability Net Value Offset DerivativeLiabilityNetValueOffset	21794000
CY2020Q4	us-gaap	Derivative Liability Collateral Right To Reclaim Cash Offset DerivativeLiabilityCollateralRightToReclaimCashOffset	21370000
CY2020Q4	us-gaap	Derivative Liabilities DerivativeLiabilities	424000
CY2019Q4	us-gaap	Derivative Fair Value Of Derivative Asset DerivativeFairValueOfDerivativeAsset	7263000
CY2019Q4	lkfn	Derivative Asset Gross Value Offset DerivativeAssetGrossValueOffset	0
CY2019Q4	lkfn	Derivative Asset Net Value Offset DerivativeAssetNetValueOffset	7263000
CY2019Q4	us-gaap	Derivative Fair Value Of Derivative Asset Amount Not Offset Against Collateral DerivativeFairValueOfDerivativeAssetAmountNotOffsetAgainstCollateral	0
CY2019Q4	lkfn	Derivative Asset Collateral Obligation To Return Cash Not Offset DerivativeAssetCollateralObligationToReturnCashNotOffset	0
CY2019Q4	us-gaap	Derivative Assets DerivativeAssets	7263000
CY2019Q4	us-gaap	Derivative Fair Value Of Derivative Liability DerivativeFairValueOfDerivativeLiability	7860000
CY2019Q4	lkfn	Derivative Liability Gross Value Offset DerivativeLiabilityGrossValueOffset	0
CY2019Q4	lkfn	Derivative Liability Net Value Offset DerivativeLiabilityNetValueOffset	7860000
CY2019Q4	us-gaap	Derivative Fair Value Of Derivative Liability Amount Not Offset Against Collateral DerivativeFairValueOfDerivativeLiabilityAmountNotOffsetAgainstCollateral	0
CY2019Q4	us-gaap	Derivative Liability Collateral Right To Reclaim Cash Offset DerivativeLiabilityCollateralRightToReclaimCashOffset	7560000
CY2019Q4	us-gaap	Derivative Liabilities DerivativeLiabilities	300000
CY2020	us-gaap	Loans And Leases Receivable Commitments Fixed Rates LoansAndLeasesReceivableCommitmentsFixedRates	65319000
CY2020	us-gaap	Loans And Leases Receivable Commitments Variable Rates LoansAndLeasesReceivableCommitmentsVariableRates	1994755000
CY2019	us-gaap	Loans And Leases Receivable Commitments Fixed Rates LoansAndLeasesReceivableCommitmentsFixedRates	44210000
CY2019	us-gaap	Loans And Leases Receivable Commitments Variable Rates LoansAndLeasesReceivableCommitmentsVariableRates	1790941000
CY2020	us-gaap	Net Income Loss NetIncomeLoss	84337000
CY2019	us-gaap	Net Income Loss NetIncomeLoss	87047000
CY2018	us-gaap	Net Income Loss NetIncomeLoss	80411000
CY2020	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	25469242
CY2019	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	25588404
CY2018	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	25288533
CY2020	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	104699
CY2019	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	170489
CY2018	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	213467
CY2020	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	3.31
CY2019	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	3.40
CY2018	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	3.18
CY2020	us-gaap	Net Income Loss NetIncomeLoss	84337000
CY2019	us-gaap	Net Income Loss NetIncomeLoss	87047000
CY2018	us-gaap	Net Income Loss NetIncomeLoss	80411000
CY2020	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	25469242
CY2019	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	25588404
CY2018	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	25288533
CY2018	us-gaap	Incremental Common Shares Attributable To Call Options And Warrants IncrementalCommonSharesAttributableToCallOptionsAndWarrants	225831
CY2020	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	25573941
CY2019	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	25758893
CY2018	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	25727831
CY2020	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	3.30
CY2019	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	3.38
CY2018	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	3.13
CY2019Q4	us-gaap	Accumulated Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	13607000
CY2019Q4	us-gaap	Accumulated Other Comprehensive Income Loss Defined Benefit Pension And Other Postretirement Plans Net Of Tax AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax	-1548000
CY2019Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	12059000
CY2020	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Before Reclassification Adjustments And Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentBeforeReclassificationAdjustmentsAndTax	15917000
CY2020	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Reclassification Adjustments And Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeReclassificationAdjustmentsAndTax	78000
CY2020	lkfn	Other Comprehensive Income Loss Adjustment Before Reclassification Adjustments And Tax OtherComprehensiveIncomeLossAdjustmentBeforeReclassificationAdjustmentsAndTax	-15839000
CY2020	lkfn	Accumulated Other Comprehensive Income Loss Available For Sale Securities Reclassification Adjustment Included In Net Income Net Of Tax AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesReclassificationAdjustmentIncludedInNetIncomeNetOfTax	342000
CY2020	lkfn	Accumulated Other Comprehensive Income Loss Defined Benefit Pension Reclassification Adjustment Included In Net Income Net Of Tax AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionReclassificationAdjustmentIncludedInNetIncomeNetOfTax	-188000
CY2020	lkfn	Accumulated Other Comprehensive Income Loss Reclassification Adjustment Included In Net Income Net Of Tax AccumulatedOtherComprehensiveIncomeLossReclassificationAdjustmentIncludedInNetIncomeNetOfTax	-154000
CY2020	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	15575000
CY2020	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent	-110000
CY2020	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	15685000
CY2020Q4	us-gaap	Accumulated Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	29182000
CY2020Q4	us-gaap	Accumulated Other Comprehensive Income Loss Defined Benefit Pension And Other Postretirement Plans Net Of Tax AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax	-1438000
CY2020Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	27744000
CY2018Q4	us-gaap	Accumulated Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	-4796000
CY2018Q4	us-gaap	Accumulated Other Comprehensive Income Loss Defined Benefit Pension And Other Postretirement Plans Net Of Tax AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax	-1395000
CY2018Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-6191000
CY2019	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Before Reclassification Adjustments And Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentBeforeReclassificationAdjustmentsAndTax	18515000
CY2019	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Reclassification Adjustments And Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeReclassificationAdjustmentsAndTax	306000
CY2019	lkfn	Other Comprehensive Income Loss Adjustment Before Reclassification Adjustments And Tax OtherComprehensiveIncomeLossAdjustmentBeforeReclassificationAdjustmentsAndTax	-18209000
CY2019	lkfn	Accumulated Other Comprehensive Income Loss Available For Sale Securities Reclassification Adjustment Included In Net Income Net Of Tax AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesReclassificationAdjustmentIncludedInNetIncomeNetOfTax	112000
CY2019	lkfn	Accumulated Other Comprehensive Income Loss Defined Benefit Pension Reclassification Adjustment Included In Net Income Net Of Tax AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionReclassificationAdjustmentIncludedInNetIncomeNetOfTax	-153000
CY2019	lkfn	Accumulated Other Comprehensive Income Loss Reclassification Adjustment Included In Net Income Net Of Tax AccumulatedOtherComprehensiveIncomeLossReclassificationAdjustmentIncludedInNetIncomeNetOfTax	41000
CY2019	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	18403000
CY2019	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent	153000
CY2019	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	18250000
CY2019Q4	us-gaap	Accumulated Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	13607000
CY2019Q4	us-gaap	Accumulated Other Comprehensive Income Loss Defined Benefit Pension And Other Postretirement Plans Net Of Tax AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax	-1548000
CY2019Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	12059000
CY2020	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax	433000
CY2020	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax	91000
CY2020	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	342000
CY2020	us-gaap	Other Comprehensive Income Loss Amortization Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Prior Service Cost Credit Before Tax OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditBeforeTax	251000
CY2020	us-gaap	Other Comprehensive Income Loss Amortization Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Prior Service Cost Credit Tax OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditTax	63000
CY2020	us-gaap	Other Comprehensive Income Loss Amortization Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Prior Service Cost Credit Net Of Tax OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditNetOfTax	188000
CY2020	us-gaap	Reclassification From Accumulated Other Comprehensive Income Current Period Net Of Tax ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax	154000
CY2019	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax	142000
CY2019	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax	30000
CY2019	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	112000
CY2019	us-gaap	Other Comprehensive Income Loss Amortization Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Prior Service Cost Credit Before Tax OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditBeforeTax	205000
CY2019	us-gaap	Other Comprehensive Income Loss Amortization Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Prior Service Cost Credit Tax OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditTax	52000
CY2019	us-gaap	Other Comprehensive Income Loss Amortization Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Prior Service Cost Credit Net Of Tax OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditNetOfTax	153000
CY2019	us-gaap	Reclassification From Accumulated Other Comprehensive Income Current Period Net Of Tax ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax	-41000
CY2018	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax	-50000
CY2018	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax	-11000
CY2018	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	-39000
CY2018	us-gaap	Other Comprehensive Income Loss Amortization Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Prior Service Cost Credit Before Tax OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditBeforeTax	266000
CY2018	us-gaap	Other Comprehensive Income Loss Amortization Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Prior Service Cost Credit Tax OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditTax	69000
CY2018	us-gaap	Other Comprehensive Income Loss Amortization Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Prior Service Cost Credit Net Of Tax OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditNetOfTax	197000
CY2018	us-gaap	Reclassification From Accumulated Other Comprehensive Income Current Period Net Of Tax ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax	-236000
CY2020Q4	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	49854000
CY2020Q3	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	45979000
CY2020Q2	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	46831000
CY2020Q1	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	50439000
CY2020Q4	us-gaap	Interest Expense InterestExpense	5141000
CY2020Q3	us-gaap	Interest Expense InterestExpense	6066000
CY2020Q2	us-gaap	Interest Expense InterestExpense	7303000
CY2020Q1	us-gaap	Interest Expense InterestExpense	11585000
CY2020Q1	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	38854000
CY2020Q4	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	920000
CY2020Q3	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	1750000
CY2020Q2	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	5500000
CY2020Q4	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	44713000
CY2020Q3	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	39913000
CY2020Q2	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	39528000
CY2020Q1	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	6600000
CY2020Q4	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	43793000
CY2020Q3	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	38163000
CY2020Q2	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	34028000
CY2020Q1	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	32254000
CY2020Q4	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	11782000
CY2020Q3	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	13115000
CY2020Q2	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	11169000
CY2020Q1	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	10777000
CY2020Q4	us-gaap	Noninterest Expense NoninterestExpense	24912000
CY2020Q3	us-gaap	Noninterest Expense NoninterestExpense	23125000
CY2020Q2	us-gaap	Noninterest Expense NoninterestExpense	21079000
CY2020Q1	us-gaap	Noninterest Expense NoninterestExpense	22089000
CY2020Q4	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	6071000
CY2020Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	5377000
CY2020Q2	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	4448000
CY2020Q1	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	3643000
CY2020Q4	us-gaap	Net Income Loss NetIncomeLoss	24592000
CY2020Q3	us-gaap	Net Income Loss NetIncomeLoss	22776000
CY2020Q2	us-gaap	Net Income Loss NetIncomeLoss	19670000
CY2020Q1	us-gaap	Net Income Loss NetIncomeLoss	17299000
CY2020Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.97
CY2020Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.89
CY2020Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.77
CY2020Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.68
CY2020Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.97
CY2020Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.89
CY2020Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.77
CY2020Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.67
CY2019Q4	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	52312000
CY2019Q3	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	54769000
CY2019Q2	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	54635000
CY2019Q1	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	53494000
CY2019Q4	us-gaap	Interest Expense InterestExpense	13430000
CY2019Q3	us-gaap	Interest Expense InterestExpense	15224000
CY2019Q2	us-gaap	Interest Expense InterestExpense	16224000
CY2019Q1	us-gaap	Interest Expense InterestExpense	15285000
CY2019Q4	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	38882000
CY2019Q3	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	39545000
CY2019Q2	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	38411000
CY2019Q1	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	38209000
CY2019Q4	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	250000
CY2019Q3	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	1000000
CY2019Q2	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	785000
CY2019Q1	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	1200000
CY2019Q4	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	38632000
CY2019Q3	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	38545000
CY2019Q2	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	37626000
CY2019Q1	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	37009000
CY2019Q4	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	11119000
CY2019Q3	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	10765000
CY2019Q2	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	11588000
CY2019Q1	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	11525000
CY2019Q4	us-gaap	Noninterest Expense NoninterestExpense	22122000
CY2019Q3	us-gaap	Noninterest Expense NoninterestExpense	22737000
CY2019Q2	us-gaap	Noninterest Expense NoninterestExpense	22092000
CY2019Q1	us-gaap	Noninterest Expense NoninterestExpense	22473000
CY2019Q4	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	5431000
CY2019Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	5119000
CY2019Q2	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	5409000
CY2019Q1	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	4379000
CY2019Q4	us-gaap	Net Income Loss NetIncomeLoss	22198000
CY2019Q3	us-gaap	Net Income Loss NetIncomeLoss	21454000
CY2019Q2	us-gaap	Net Income Loss NetIncomeLoss	21713000
CY2019Q1	us-gaap	Net Income Loss NetIncomeLoss	21682000
CY2019Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.86
CY2019Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.84
CY2019Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.85
CY2019Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.85
CY2019Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.86
CY2019Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.83
CY2019Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.85
CY2019Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.84
CY2009Q1	lkfn	Issue Of Warrant Stock Purchase IssueOfWarrantStockPurchase	396538
CY2009Q1	lkfn	Issue Of Warrants Aggregate Purchase Price Of Stock IssueOfWarrantsAggregatePurchasePriceOfStock	56044000
CY2009Q1	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Expected Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1	P10Y
CY2009Q1	lkfn	Warrant Exercise Price Per Share WarrantExercisePricePerShare	21.20
CY2009Q1	us-gaap	Share Price SharePrice	17.45
CY2009Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExercisePrice	21.20
CY2009Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate	0.0302
CY2009Q1	lkfn	Warrant Period WarrantPeriod	P10Y
CY2009Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate	0.045759
CY2009Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Volatility Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate	0.418046
CY2009Q1	lkfn	Warrant Fair Value Per Share WarrantFairValuePerShare	4.4433
CY2018	lkfn	Warrant Exercise Price Per Share WarrantExercisePricePerShare	13.3503
CY2009Q4	lkfn	Adjustments In Share Capital Warrants Issue AdjustmentsInShareCapitalWarrantsIssue	198269
CY2018	lkfn	Shares Issuable Upon Exercise Of Warrants SharesIssuableUponExerciseOfWarrants	314846
CY2019	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	1890000
CY2018	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	1244000
CY2020	lkfn	Interest Rate Swap Fee Income InterestRateSwapFeeIncome	5089000
CY2019	lkfn	Interest Rate Swap Fee Income InterestRateSwapFeeIncome	1691000
CY2018	lkfn	Interest Rate Swap Fee Income InterestRateSwapFeeIncome	475000
CY2020	us-gaap	Fees And Commissions Mortgage Banking And Servicing FeesAndCommissionsMortgageBankingAndServicing	3911000
CY2019Q1	us-gaap	Class Of Warrant Or Right Number Of Securities Called By Warrants Or Rights ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights	315961
CY2019Q1	lkfn	Cost To Exercise Warrant CostToExerciseWarrant	4200000
CY2019Q1	lkfn	Common Stock Issued On Warrants Exercises CommonStockIssuedOnWarrantsExercises	91894
CY2019Q1	lkfn	Warrant Fair Value Per Share WarrantFairValuePerShare	45.74
CY2019Q1	us-gaap	Class Of Warrant Or Right Number Of Securities Called By Warrants Or Rights ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights	224066
CY2020	us-gaap	Brokerage Commissions Revenue BrokerageCommissionsRevenue	1670000
CY2019	us-gaap	Brokerage Commissions Revenue BrokerageCommissionsRevenue	1687000
CY2018	us-gaap	Brokerage Commissions Revenue BrokerageCommissionsRevenue	1458000
CY2020	lkfn	Service Charges On Commercial Deposit Acounts ServiceChargesOnCommercialDepositAcounts	5798000
CY2019	lkfn	Service Charges On Commercial Deposit Acounts ServiceChargesOnCommercialDepositAcounts	10082000
CY2018	lkfn	Service Charges On Commercial Deposit Acounts ServiceChargesOnCommercialDepositAcounts	10234000
CY2020	lkfn	Service Charges On Retail Deposit Acounts ServiceChargesOnRetailDepositAcounts	851000
CY2019	lkfn	Service Charges On Retail Deposit Acounts ServiceChargesOnRetailDepositAcounts	880000
CY2018	lkfn	Service Charges On Retail Deposit Acounts ServiceChargesOnRetailDepositAcounts	879000
CY2020	lkfn	Over Drafts Net OverDraftsNet	2485000
CY2019	lkfn	Over Drafts Net OverDraftsNet	3585000
CY2018	lkfn	Over Drafts Net OverDraftsNet	3581000
CY2020	lkfn	Other Service Charges OtherServiceCharges	976000
CY2019	lkfn	Other Service Charges OtherServiceCharges	1170000
CY2018	lkfn	Other Service Charges OtherServiceCharges	1137000
CY2020	lkfn	Fees And Commissions Debit Cards Interchange Fees FeesAndCommissionsDebitCardsInterchangeFees	6707000
CY2019	lkfn	Fees And Commissions Debit Cards Interchange Fees FeesAndCommissionsDebitCardsInterchangeFees	6344000
CY2018	lkfn	Fees And Commissions Debit Cards Interchange Fees FeesAndCommissionsDebitCardsInterchangeFees	5883000
CY2020	lkfn	Loan Fees LoanFees	2366000
CY2019	lkfn	Loan Fees LoanFees	2544000
CY2018	lkfn	Loan Fees LoanFees	2423000
CY2020	lkfn	Other Loan And Service Fees OtherLoanAndServiceFees	1012000
CY2019	lkfn	Other Loan And Service Fees OtherLoanAndServiceFees	1023000
CY2018	lkfn	Other Loan And Service Fees OtherLoanAndServiceFees	985000
CY2020	lkfn	Fees And Commission Credit Card And Interchange FeesAndCommissionCreditCardAndInterchange	2408000
CY2019	lkfn	Fees And Commission Credit Card And Interchange FeesAndCommissionCreditCardAndInterchange	2641000
CY2018	lkfn	Fees And Commission Credit Card And Interchange FeesAndCommissionCreditCardAndInterchange	2461000
CY2020	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	2105000
CY2019	us-gaap	Fees And Commissions Mortgage Banking And Servicing FeesAndCommissionsMortgageBankingAndServicing	1626000
CY2018	us-gaap	Fees And Commissions Mortgage Banking And Servicing FeesAndCommissionsMortgageBankingAndServicing	1150000
CY2020	us-gaap	Debt And Equity Securities Gain Loss DebtAndEquitySecuritiesGainLoss	433000
CY2019	us-gaap	Debt And Equity Securities Gain Loss DebtAndEquitySecuritiesGainLoss	142000
CY2018	us-gaap	Debt And Equity Securities Gain Loss DebtAndEquitySecuritiesGainLoss	-50000
CY2020	us-gaap	Noninterest Income Other NoninterestIncomeOther	3564000
CY2019	us-gaap	Noninterest Income Other NoninterestIncomeOther	2857000
CY2018	us-gaap	Noninterest Income Other NoninterestIncomeOther	2098000
CY2020	us-gaap	Noninterest Income NoninterestIncome	46843000
CY2019	us-gaap	Noninterest Income NoninterestIncome	44997000
CY2018	us-gaap	Noninterest Income NoninterestIncome	40302000
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due Next Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths	581000
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	595000
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	606000
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	622000
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Five LesseeOperatingLeaseLiabilityPaymentsDueYearFive	640000
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due After Year Five LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive	2233000
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	5277000
CY2020Q4	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	602000
CY2020Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	4675000
CY2020Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	4675000
CY2020	us-gaap	Operating Lease Cost OperatingLeaseCost	536000
CY2019	us-gaap	Operating Lease Cost OperatingLeaseCost	498000
CY2020	us-gaap	Short Term Lease Cost ShortTermLeaseCost	24000
CY2019	us-gaap	Short Term Lease Cost ShortTermLeaseCost	24000
CY2020	us-gaap	Lease Cost LeaseCost	560000
CY2019	us-gaap	Lease Cost LeaseCost	522000
CY2020	us-gaap	Operating Lease Payments OperatingLeasePayments	536000
CY2019	us-gaap	Operating Lease Payments OperatingLeasePayments	498000
CY2020Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P8Y9M18D
CY2020Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.028
CY2019Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.028
CY2021Q1	lkfn	Financing Receivable Loan Portfolio Deferrals Covid19 FinancingReceivableLoanPortfolioDeferralsCovid19	102200000
CY2021Q1	lkfn	Financing Receivable Loan Portfolio Deferrals Covid19 Borrowers FinancingReceivableLoanPortfolioDeferralsCovid19Borrowers	50
CY2021Q1	lkfn	Financing Receivable Loan Portfolio Deferrals Covid19 Percentage Of Loan Portfolio FinancingReceivableLoanPortfolioDeferralsCovid19PercentageOfLoanPortfolio	0.023
CY2021Q1	lkfn	Financing Receivable Loan Portfolio Deferrals Covid19 Loans Under Second Deferral Action FinancingReceivableLoanPortfolioDeferralsCovid19LoansUnderSecondDeferralAction	20800000
CY2021Q1	lkfn	Financing Receivable Loan Portfolio Deferral Loans Period Covid19 FinancingReceivableLoanPortfolioDeferralLoansPeriodCovid19	P90D
CY2021Q1	lkfn	Financing Receivable Loan Portfolio Number Of Borrowers Loans Under Fourth Deferral Covid19 FinancingReceivableLoanPortfolioNumberOfBorrowersLoansUnderFourthDeferralCovid19	14
CY2021Q1	lkfn	Financing Receivable Loan Portfolio Deferrals Covid19 Loans Under Fourth Deferral Action FinancingReceivableLoanPortfolioDeferralsCovid19LoansUnderFourthDeferralAction	26600000

Files In Submission

Name	View Source	Status
0001104659-21-026486-index-headers.html	Edgar Link	pending
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0001104659-21-026486.txt	Edgar Link	pending
0001104659-21-026486-xbrl.zip	Edgar Link	pending
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$LKFN
LAKELAND FINANCIAL CORP Stock $lkfn

2019 Q4 Form 10-K Financial Statement

#000110465921026486 Filed on February 23, 2021

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$LKFN LAKELAND FINANCIAL CORP Stock $lkfn

2019 Q4 Form 10-K Financial Statement

#000110465921026486 Filed on February 23, 2021

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$LKFN
LAKELAND FINANCIAL CORP Stock $lkfn