$LKFN
LAKELAND FINANCIAL CORP Stock $lkfn

$lkfn Overview Financials Valuation SEC Filings Company Website

2021 Q4 Form 10-K Financial Statement

#000072199422000024 Filed on February 23, 2022

Income Statement

Concept	2021 Q4	2021 Q3	2021
Revenue	$48.32M	$49.30M	$193.2M
YoY Change	-3.07%	7.21%	0.06%
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	$6.105M
YoY Change	0.0%	0.0%	1.04%
% of Gross Profit
Operating Expenses
YoY Change
Operating Profit
YoY Change
Interest Expense	$3.315M	$3.554M	$15.13M
YoY Change	-35.52%	-41.41%	-49.72%
% of Operating Profit
Other Income/Expense, Net
YoY Change
Pretax Income	$29.79M	$29.59M	$117.4M
YoY Change	-2.84%	5.1%	13.06%
Income Tax	$5.507M	$5.469M	$21.71M
% Of Pretax Income	18.49%	18.48%	18.49%
Net Earnings	$24.28M	$24.12M	$95.73M
YoY Change	-1.26%	5.9%	13.51%
Net Earnings / Revenue	50.25%	48.93%	49.55%
Basic Earnings Per Share	$0.95	$0.95	$3.76
Diluted Earnings Per Share	$0.95	$0.94	$3.74
COMMON SHARES
Basic Shares Outstanding	25.30M shares	25.48M shares	25.48M shares
Diluted Shares Outstanding		25.64M shares	25.62M shares

Balance Sheet

Concept	2021 Q4	2021 Q3	2021
SHORT-TERM ASSETS
Cash & Short-Term Investments
YoY Change
Cash & Equivalents	$683.2M	$557.2M
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	$59.31M	$60.00M	$63.50M
YoY Change	0.02%	-0.52%	-0.78%
Goodwill	$4.970M	$4.970M
YoY Change	0.0%	0.0%
Intangibles
YoY Change
Long-Term Investments	$9.400M
YoY Change	2.17%
Other Assets
YoY Change
Total Long-Term Assets
YoY Change
TOTAL ASSETS
Total Short-Term Assets
Total Long-Term Assets
Total Assets	$6.557B	$6.223B	$6.557B
YoY Change	12.47%	12.1%	12.47%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$2.600M	$2.900M	$2.600M
YoY Change	-56.67%	-53.97%	-56.67%
Accrued Expenses	$4.200M	$4.300M	$4.200M
YoY Change	-10.64%	-10.42%	-10.64%
Deferred Revenue
YoY Change
Short-Term Debt
YoY Change
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities	$6.800M	$7.200M	$6.800M
YoY Change	-36.45%	-35.14%	-36.45%
LONG-TERM LIABILITIES
Long-Term Debt	$0.00	$0.00	$0.00
YoY Change	-100.0%	-100.0%	-100.0%
Other Long-Term Liabilities	$35.20M	$42.80M	$35.20M
YoY Change	-12.66%	-13.88%	-12.66%
Total Long-Term Liabilities	$35.20M	$42.80M	$35.20M
YoY Change	-30.71%	-28.9%	-30.71%
TOTAL LIABILITIES
Total Short-Term Liabilities	$6.800M	$7.200M	$6.800M
Total Long-Term Liabilities	$35.20M	$42.80M	$35.20M
Total Liabilities	$5.852B	$5.540B	$5.853B
YoY Change	13.13%	12.73%	13.13%
SHAREHOLDERS EQUITY
Retained Earnings	$583.1M	$567.5M
YoY Change	10.23%	10.83%
Common Stock	$120.6M	$119.6M
YoY Change	4.95%	4.92%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares	476.8K shares	476.0K shares
Shareholders Equity	$704.8M	$683.1M	$704.8M
YoY Change
Total Liabilities & Shareholders Equity	$6.557B	$6.223B	$6.557B
YoY Change	12.47%	12.1%	12.47%

Cashflow Statement

Concept	2021 Q4	2021 Q3	2021
OPERATING ACTIVITIES
Net Income	$24.28M	$24.12M	$95.73M
YoY Change	-1.26%	5.9%	13.51%
Depreciation, Depletion And Amortization	$1.500M	$1.500M	$6.105M
YoY Change	0.0%	0.0%	1.04%
Cash From Operating Activities	$27.80M	$26.90M	$113.8M
YoY Change	7.34%	30.58%	30.43%
INVESTING ACTIVITIES
Capital Expenditures	-$900.0K	-$2.000M	$6.167M
YoY Change	80.0%	5.26%	7.83%
Acquisitions
YoY Change
Other Investing Activities	-$213.0M	-$51.40M	-$325.4M
YoY Change	28.55%	-52.23%	-53.93%
Cash From Investing Activities	-$213.8M	-$53.40M	-$331.5M
YoY Change	28.56%	-51.19%	-53.44%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net			$559.0K
YoY Change			-94.7%
Debt Paid & Issued, Net			$0.00
YoY Change
Cash From Financing Activities	312.1M	10.90M	$651.1M
YoY Change	19.53%	-88.11%	-16.03%
NET CHANGE
Cash From Operating Activities	27.80M	26.90M	$113.8M
Cash From Investing Activities	-213.8M	-53.40M	-$331.5M
Cash From Financing Activities	312.1M	10.90M	$651.1M
Net Change In Cash	126.1M	-15.60M	$433.3M
YoY Change	4.47%	-637.93%	187.83%
FREE CASH FLOW
Cash From Operating Activities	$27.80M	$26.90M	$113.8M
Capital Expenditures	-$900.0K	-$2.000M	$6.167M
Free Cash Flow	$28.70M	$28.90M	$107.6M
YoY Change	8.71%	28.44%	32.01%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
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CY2021	dei	Entity File Number EntityFileNumber	0-11487
CY2021	dei	Entity Registrant Name EntityRegistrantName	LAKELAND FINANCIAL CORPORATION
CY2021	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	IN
CY2021	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	35-1559596
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CY2020	us-gaap	Equipment Expense EquipmentExpense	5766000	USD
CY2019	us-gaap	Equipment Expense EquipmentExpense	5521000	USD
CY2021	us-gaap	Information Technology And Data Processing InformationTechnologyAndDataProcessing	12674000	USD
CY2020	us-gaap	Information Technology And Data Processing InformationTechnologyAndDataProcessing	11864000	USD
CY2019	us-gaap	Information Technology And Data Processing InformationTechnologyAndDataProcessing	10407000	USD
CY2020	lkfn	Corporate And Business Development Expense CorporateAndBusinessDevelopmentExpense	3093000	USD
CY2019	lkfn	Corporate And Business Development Expense CorporateAndBusinessDevelopmentExpense	4371000	USD
CY2021	lkfn	Regulatory Fees And Federal Deposit Insurance Corporation Insurance RegulatoryFeesAndFederalDepositInsuranceCorporationInsurance	2242000	USD
CY2020	lkfn	Regulatory Fees And Federal Deposit Insurance Corporation Insurance RegulatoryFeesAndFederalDepositInsuranceCorporationInsurance	1707000	USD
CY2019	lkfn	Regulatory Fees And Federal Deposit Insurance Corporation Insurance RegulatoryFeesAndFederalDepositInsuranceCorporationInsurance	638000	USD
CY2021	us-gaap	Professional Fees ProfessionalFees	7064000	USD
CY2020	us-gaap	Professional Fees ProfessionalFees	5314000	USD
CY2019	us-gaap	Professional Fees ProfessionalFees	4644000	USD
CY2021	us-gaap	Other Noninterest Expense OtherNoninterestExpense	8905000	USD
CY2020	us-gaap	Other Noninterest Expense OtherNoninterestExpense	8197000	USD
CY2019	us-gaap	Other Noninterest Expense OtherNoninterestExpense	9806000	USD
CY2021	us-gaap	Noninterest Expense NoninterestExpense	104287000	USD
CY2020	us-gaap	Noninterest Expense NoninterestExpense	91205000	USD
CY2019	us-gaap	Noninterest Expense NoninterestExpense	89424000	USD
CY2021	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	117444000	USD
CY2020	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	103876000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	107385000	USD
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	21711000	USD
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	19539000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	20338000	USD
CY2021	us-gaap	Net Income Loss NetIncomeLoss	95733000	USD
CY2020	us-gaap	Net Income Loss NetIncomeLoss	84337000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	87047000	USD
CY2021	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	25475994	shares
CY2020	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	25469242	shares
CY2019	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	25588404	shares
CY2021	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	3.76
CY2020	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	3.31
CY2019	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	3.40
CY2021	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	25620105	shares
CY2020	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	25573941	shares
CY2019	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	25758893	shares
CY2021	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	3.74
CY2020	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	3.30
CY2019	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	3.38
CY2021	us-gaap	Net Income Loss NetIncomeLoss	95733000	USD
CY2020	us-gaap	Net Income Loss NetIncomeLoss	84337000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	87047000	USD
CY2021	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	-14553000	USD
CY2020	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	20148000	USD
CY2019	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	23438000	USD
CY2021	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax	797000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax	433000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax	142000	USD
CY2021	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Before Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentBeforeTax	-15350000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Before Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentBeforeTax	19715000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Before Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentBeforeTax	23296000	USD
CY2021	us-gaap	Other Comprehensive Income Availableforsale Securities Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesTaxPortionAttributableToParent	-3224000	USD
CY2020	us-gaap	Other Comprehensive Income Availableforsale Securities Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesTaxPortionAttributableToParent	4140000	USD
CY2019	us-gaap	Other Comprehensive Income Availableforsale Securities Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesTaxPortionAttributableToParent	4893000	USD
CY2021	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent	-12126000	USD
CY2020	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent	15575000	USD
CY2019	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent	18403000	USD
CY2021	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Net Unamortized Gain Loss Arising During Period Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansNetUnamortizedGainLossArisingDuringPeriodBeforeTax	390000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Net Unamortized Gain Loss Arising During Period Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansNetUnamortizedGainLossArisingDuringPeriodBeforeTax	-105000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Net Unamortized Gain Loss Arising During Period Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansNetUnamortizedGainLossArisingDuringPeriodBeforeTax	-409000	USD
CY2021	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	242000	USD
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	USD
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	USD
CY2021	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Before Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentBeforeTaxPortionAttributableToParent	-632000	USD
CY2020	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Before Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentBeforeTaxPortionAttributableToParent	-146000	USD
CY2019	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Before Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentBeforeTaxPortionAttributableToParent	204000	USD
CY2021	us-gaap	Other Comprehensive Income Defined Benefit Plans Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansTaxPortionAttributableToParent	-157000	USD
CY2020	us-gaap	Other Comprehensive Income Defined Benefit Plans Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansTaxPortionAttributableToParent	-36000	USD
CY2019	us-gaap	Other Comprehensive Income Defined Benefit Plans Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansTaxPortionAttributableToParent	51000	USD
CY2021	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent	-475000	USD
CY2020	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent	-110000	USD
CY2019	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent	153000	USD
CY2021	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-11651000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	15685000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	18250000	USD
CY2021	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	84082000	USD
CY2020	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	100022000	USD
CY2019	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	105297000	USD
CY2018Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	521704000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	87047000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	18250000	USD
CY2019	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	1.16
CY2019	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	29652000	USD
CY2019	lkfn	Treasury Shares Purchased Deferred Directors Plan TreasurySharesPurchasedDeferredDirectorsPlan	0	USD
CY2019	lkfn	Treasury Stock Sold And Distributed Under Deferred Directors Plan Value TreasuryStockSoldAndDistributedUnderDeferredDirectorsPlanValue	0	USD
CY2019	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	2109000	USD
CY2019	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	4187000	USD
CY2019Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	598100000	USD
CY2020	us-gaap	Net Income Loss NetIncomeLoss	84337000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	15685000	USD
CY2020	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	1.20
CY2020	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	30579000	USD
CY2020	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	10012000	USD
CY2020	lkfn	Treasury Shares Purchased Deferred Directors Plan TreasurySharesPurchasedDeferredDirectorsPlan	0	USD
CY2020	lkfn	Treasury Stock Sold And Distributed Under Deferred Directors Plan Value TreasuryStockSoldAndDistributedUnderDeferredDirectorsPlanValue	0	USD
CY2020	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	2137000	USD
CY2020	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	1790000	USD
CY2020Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	657184000	USD
CY2021	us-gaap	Net Income Loss NetIncomeLoss	95733000	USD
CY2021	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-11651000	USD
CY2021	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	1.36
CY2021	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	34653000	USD
CY2021	lkfn	Treasury Shares Purchased Deferred Directors Plan TreasurySharesPurchasedDeferredDirectorsPlan	0	USD
CY2021	lkfn	Treasury Stock Sold And Distributed Under Deferred Directors Plan Value TreasuryStockSoldAndDistributedUnderDeferredDirectorsPlanValue	0	USD
CY2021	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	1914000	USD
CY2021	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	7158000	USD
CY2021Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	704906000	USD
CY2021	us-gaap	Net Income Loss NetIncomeLoss	95733000	USD
CY2020	us-gaap	Net Income Loss NetIncomeLoss	84337000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	87047000	USD
CY2021	us-gaap	Depreciation Depreciation	6105000	USD
CY2020	us-gaap	Depreciation Depreciation	6042000	USD
CY2019	us-gaap	Depreciation Depreciation	5930000	USD
CY2021	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	1077000	USD
CY2020	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	14770000	USD
CY2019	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	3235000	USD
CY2021	us-gaap	Gains Losses On Sales Of Other Real Estate GainsLossesOnSalesOfOtherRealEstate	-67000	USD
CY2020	us-gaap	Gains Losses On Sales Of Other Real Estate GainsLossesOnSalesOfOtherRealEstate	0	USD
CY2019	us-gaap	Gains Losses On Sales Of Other Real Estate GainsLossesOnSalesOfOtherRealEstate	0	USD
CY2021	us-gaap	Amortization Of Mortgage Servicing Rights Ms Rs AmortizationOfMortgageServicingRightsMSRs	2282000	USD
CY2020	us-gaap	Amortization Of Mortgage Servicing Rights Ms Rs AmortizationOfMortgageServicingRightsMSRs	772000	USD
CY2019	us-gaap	Amortization Of Mortgage Servicing Rights Ms Rs AmortizationOfMortgageServicingRightsMSRs	528000	USD
CY2021	us-gaap	Servicing Asset At Amortized Value Valuation Allowance ServicingAssetAtAmortizedValueValuationAllowance	0	USD
CY2020	us-gaap	Servicing Asset At Amortized Value Valuation Allowance ServicingAssetAtAmortizedValueValuationAllowance	715000	USD
CY2019	us-gaap	Servicing Asset At Amortized Value Valuation Allowance ServicingAssetAtAmortizedValueValuationAllowance	0	USD
CY2021	us-gaap	Payments For Origination And Purchases Of Loans Held For Sale PaymentsForOriginationAndPurchasesOfLoansHeldForSale	119439000	USD
CY2020	us-gaap	Payments For Origination And Purchases Of Loans Held For Sale PaymentsForOriginationAndPurchasesOfLoansHeldForSale	117600000	USD
CY2019	us-gaap	Payments For Origination And Purchases Of Loans Held For Sale PaymentsForOriginationAndPurchasesOfLoansHeldForSale	66008000	USD
CY2021	us-gaap	Gain Loss On Sales Of Loans Net GainLossOnSalesOfLoansNet	4376000	USD
CY2020	us-gaap	Gain Loss On Sales Of Loans Net GainLossOnSalesOfLoansNet	4510000	USD
CY2019	us-gaap	Gain Loss On Sales Of Loans Net GainLossOnSalesOfLoansNet	2043000	USD
CY2021	us-gaap	Proceeds From Sale Of Loans Held For Sale ProceedsFromSaleOfLoansHeldForSale	126391000	USD
CY2020	us-gaap	Proceeds From Sale Of Loans Held For Sale ProceedsFromSaleOfLoansHeldForSale	114244000	USD
CY2019	us-gaap	Proceeds From Sale Of Loans Held For Sale ProceedsFromSaleOfLoansHeldForSale	64820000	USD
CY2021	us-gaap	Gain Loss On Disposition Of Assets GainLossOnDispositionOfAssets	-43000	USD
CY2020	us-gaap	Gain Loss On Disposition Of Assets GainLossOnDispositionOfAssets	-86000	USD
CY2019	us-gaap	Gain Loss On Disposition Of Assets GainLossOnDispositionOfAssets	3000	USD
CY2021	us-gaap	Debt And Equity Securities Gain Loss DebtAndEquitySecuritiesGainLoss	797000	USD
CY2020	us-gaap	Debt And Equity Securities Gain Loss DebtAndEquitySecuritiesGainLoss	433000	USD
CY2019	us-gaap	Debt And Equity Securities Gain Loss DebtAndEquitySecuritiesGainLoss	142000	USD
CY2021	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	-4959000	USD
CY2020	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	-3998000	USD
CY2019	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	-3947000	USD
CY2021	us-gaap	Share Based Compensation ShareBasedCompensation	7158000	USD
CY2020	us-gaap	Share Based Compensation ShareBasedCompensation	1790000	USD
CY2019	us-gaap	Share Based Compensation ShareBasedCompensation	4187000	USD
CY2021	lkfn	Earning On Life Insurance EarningOnLifeInsurance	2467000	USD
CY2020	lkfn	Earning On Life Insurance EarningOnLifeInsurance	2105000	USD
CY2019	lkfn	Earning On Life Insurance EarningOnLifeInsurance	1890000	USD
CY2021	lkfn	Gain On Life Insurance GainOnLifeInsurance	415000	USD
CY2019	lkfn	Gain On Life Insurance GainOnLifeInsurance	841000	USD
CY2021	lkfn	Excess Tax Benefit From Share Based Compensation In Operating Activities ExcessTaxBenefitFromShareBasedCompensationInOperatingActivities	330000	USD
CY2020	lkfn	Excess Tax Benefit From Share Based Compensation In Operating Activities ExcessTaxBenefitFromShareBasedCompensationInOperatingActivities	71000	USD
CY2019	lkfn	Excess Tax Benefit From Share Based Compensation In Operating Activities ExcessTaxBenefitFromShareBasedCompensationInOperatingActivities	529000	USD
CY2020	lkfn	Gain On Life Insurance GainOnLifeInsurance	730000	USD
CY2021	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	1852000	USD
CY2020	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	6315000	USD
CY2019	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	4733000	USD
CY2021	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	-371000	USD
CY2020	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	-7762000	USD
CY2019	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	6534000	USD
CY2021	us-gaap	Adjustments To Reconcile Net Income Loss To Cash Provided By Used In Operating Activities AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivities	18035000	USD
CY2020	us-gaap	Adjustments To Reconcile Net Income Loss To Cash Provided By Used In Operating Activities AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivities	2891000	USD
CY2019	us-gaap	Adjustments To Reconcile Net Income Loss To Cash Provided By Used In Operating Activities AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivities	12992000	USD
CY2021	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	113768000	USD
CY2020	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	87228000	USD
CY2019	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	100039000	USD
CY2021	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	13964000	USD
CY2020	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	8018000	USD
CY2019	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	57114000	USD
CY2021	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	137812000	USD
CY2020	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	97998000	USD
CY2019	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	67818000	USD
CY2021	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	835001000	USD
CY2020	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	216478000	USD
CY2019	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	129453000	USD
CY2021	us-gaap	Payments To Acquire Life Insurance Policies PaymentsToAcquireLifeInsurancePolicies	711000	USD
CY2020	us-gaap	Payments To Acquire Life Insurance Policies PaymentsToAcquireLifeInsurancePolicies	10409000	USD
CY2019	us-gaap	Payments To Acquire Life Insurance Policies PaymentsToAcquireLifeInsurancePolicies	5552000	USD
CY2021	us-gaap	Payments For Proceeds From Loans And Leases PaymentsForProceedsFromLoansAndLeases	-356660000	USD
CY2020	us-gaap	Payments For Proceeds From Loans And Leases PaymentsForProceedsFromLoansAndLeases	587377000	USD
CY2019	us-gaap	Payments For Proceeds From Loans And Leases PaymentsForProceedsFromLoansAndLeases	152119000	USD
CY2021	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	8000	USD
CY2020	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	658000	USD
CY2019	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	14000	USD
CY2021	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	6167000	USD
CY2020	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	5719000	USD
CY2019	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	7998000	USD
CY2021	us-gaap	Proceeds From Sale Of Other Real Estate ProceedsFromSaleOfOtherRealEstate	946000	USD
CY2020	us-gaap	Proceeds From Sale Of Other Real Estate ProceedsFromSaleOfOtherRealEstate	0	USD
CY2019	us-gaap	Proceeds From Sale Of Other Real Estate ProceedsFromSaleOfOtherRealEstate	0	USD
CY2021	us-gaap	Proceeds From Life Insurance Policies ProceedsFromLifeInsurancePolicies	943000	USD
CY2020	us-gaap	Proceeds From Life Insurance Policies ProceedsFromLifeInsurancePolicies	1285000	USD
CY2019	us-gaap	Proceeds From Life Insurance Policies ProceedsFromLifeInsurancePolicies	1483000	USD
CY2021	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-331546000	USD
CY2020	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-712024000	USD
CY2019	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-168693000	USD
CY2021	us-gaap	Increase Decrease In Deposits IncreaseDecreaseInDeposits	698602000	USD
CY2021	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	651091000	USD
CY2020	us-gaap	Increase Decrease In Deposits IncreaseDecreaseInDeposits	902986000	USD
CY2019	us-gaap	Increase Decrease In Deposits IncreaseDecreaseInDeposits	89754000	USD
CY2021	us-gaap	Proceeds From Repayments Of Short Term Debt ProceedsFromRepaymentsOfShortTermDebt	-10500000	USD
CY2020	us-gaap	Proceeds From Repayments Of Short Term Debt ProceedsFromRepaymentsOfShortTermDebt	10500000	USD
CY2019	us-gaap	Proceeds From Repayments Of Short Term Debt ProceedsFromRepaymentsOfShortTermDebt	-75555000	USD
CY2021	lkfn	Payments On Short Term Fhlb Borrowings PaymentsOnShortTermFHLBBorrowings	0	USD
CY2020	lkfn	Payments On Short Term Fhlb Borrowings PaymentsOnShortTermFHLBBorrowings	170000000	USD
CY2019	lkfn	Payments On Short Term Fhlb Borrowings PaymentsOnShortTermFHLBBorrowings	0	USD
CY2021	lkfn	Payments On Long Term Federal Home Loan Bank Borrowings PaymentsOnLongTermFederalHomeLoanBankBorrowings	0	USD
CY2020	lkfn	Payments On Long Term Federal Home Loan Bank Borrowings PaymentsOnLongTermFederalHomeLoanBankBorrowings	0	USD
CY2019	lkfn	Payments On Long Term Federal Home Loan Bank Borrowings PaymentsOnLongTermFederalHomeLoanBankBorrowings	0	USD
CY2021	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	0	USD
CY2020	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	75000000	USD
CY2019	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	0	USD
CY2021	us-gaap	Repayments Of Subordinated Debt RepaymentsOfSubordinatedDebt	0	USD
CY2020	us-gaap	Repayments Of Subordinated Debt RepaymentsOfSubordinatedDebt	0	USD
CY2019	us-gaap	Repayments Of Subordinated Debt RepaymentsOfSubordinatedDebt	30928000	USD
CY2021	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	34640000	USD
CY2020	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	30566000	USD
CY2019	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	29639000	USD
CY2021	us-gaap	Payments Of Dividends Preferred Stock And Preference Stock PaymentsOfDividendsPreferredStockAndPreferenceStock	13000	USD
CY2020	us-gaap	Payments Of Dividends Preferred Stock And Preference Stock PaymentsOfDividendsPreferredStockAndPreferenceStock	13000	USD
CY2019	us-gaap	Payments Of Dividends Preferred Stock And Preference Stock PaymentsOfDividendsPreferredStockAndPreferenceStock	13000	USD
CY2021	lkfn	Proceeds From Repayment Of Issuance Of Shares Under Incentive And Share Based Compensation Plans Including Stock Options ProceedsFromRepaymentOfIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions	-1914000	USD
CY2020	lkfn	Proceeds From Repayment Of Issuance Of Shares Under Incentive And Share Based Compensation Plans Including Stock Options ProceedsFromRepaymentOfIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions	-2137000	USD
CY2019	lkfn	Proceeds From Repayment Of Issuance Of Shares Under Incentive And Share Based Compensation Plans Including Stock Options ProceedsFromRepaymentOfIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions	-2109000	USD
CY2021	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	559000	USD
CY2020	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	10547000	USD
CY2019	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	515000	USD
CY2021	us-gaap	Proceeds From Sale Of Treasury Stock ProceedsFromSaleOfTreasuryStock	115000	USD
CY2020	us-gaap	Proceeds From Sale Of Treasury Stock ProceedsFromSaleOfTreasuryStock	119000	USD
CY2019	us-gaap	Proceeds From Sale Of Treasury Stock ProceedsFromSaleOfTreasuryStock	118000	USD
CY2020	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	775342000	USD
CY2019	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-48887000	USD
CY2021	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	433313000	USD
CY2020	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	150546000	USD
CY2019	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-117541000	USD
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	249927000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	99381000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	216922000	USD
CY2021Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	683240000	USD
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	249927000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	99381000	USD
CY2021	us-gaap	Interest Paid Net InterestPaidNet	18471000	USD
CY2020	us-gaap	Interest Paid Net InterestPaidNet	35740000	USD
CY2019	us-gaap	Interest Paid Net InterestPaidNet	58964000	USD
CY2021	us-gaap	Income Taxes Paid IncomeTaxesPaid	25947000	USD
CY2020	us-gaap	Income Taxes Paid IncomeTaxesPaid	19355000	USD
CY2019	us-gaap	Income Taxes Paid IncomeTaxesPaid	21035000	USD
CY2021	us-gaap	Transfer To Other Real Estate TransferToOtherRealEstate	893000	USD
CY2020	us-gaap	Transfer To Other Real Estate TransferToOtherRealEstate	35000	USD
CY2019	us-gaap	Transfer To Other Real Estate TransferToOtherRealEstate	0	USD
CY2021	lkfn	Property Transferred To Held For Sale PropertyTransferredToHeldForSale	0	USD
CY2020	lkfn	Property Transferred To Held For Sale PropertyTransferredToHeldForSale	0	USD
CY2019	lkfn	Property Transferred To Held For Sale PropertyTransferredToHeldForSale	0	USD
CY2021	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	0	USD
CY2020	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	0	USD
CY2019	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	5483000	USD
CY2021	us-gaap	Use Of Estimates UseOfEstimates	<div style="margin-bottom:12pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:120%">Use of Estimates:</span></div><div style="margin-bottom:10pt;text-indent:36pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">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.</span></div>
CY2021Q4	us-gaap	Financing Receivable Accrued Interest After Allowance For Credit Loss FinancingReceivableAccruedInterestAfterAllowanceForCreditLoss	10000000.0	USD
CY2020Q4	us-gaap	Financing Receivable Accrued Interest After Allowance For Credit Loss FinancingReceivableAccruedInterestAfterAllowanceForCreditLoss	14600000	USD
CY2021	us-gaap	Financing Receivable Allowance For Credit Losses Policy For Uncollectible Amounts FinancingReceivableAllowanceForCreditLossesPolicyForUncollectibleAmounts	<div style="margin-bottom:9pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:120%">Allowance for Credit Losses:</span></div><div style="margin-bottom:9pt;text-indent:36pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">The allowance for credit losses is a valuation allowance to provide for expected credit losses. Losses are charged against the allowance when management believes that the principal is uncollectible. Subsequent recoveries, if any, are credited to the allowance. Allocations of the allowance are made for specific loans and for pools of similar types of loans, although the entire allowance is available for any loan that, in management's judgment, should be charged against the allowance. A provision for credit losses is taken based on management's ongoing evaluation of the appropriate allowance balance. A formal evaluation of the adequacy of the credit loss allowance is conducted monthly. The ultimate recovery of all loans is susceptible to future market factors beyond the Company's control. </span></div><div style="margin-bottom:9pt;text-indent:36pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">The determination of the appropriate allowance is inherently subjective, as it requires significant estimates by management. The Company has an established process to determine the adequacy of the allowance for credit losses that generally includes consideration of changes in the nature and volume of the loan portfolio and overall portfolio quality, along with current and forecasted economic conditions that may affect borrowers' ability to repay. Consideration is not limited to these factors although they represent the most commonly cited factors. To determine the specific allocation levels for individual credits, management considers the current valuation of collateral and the amounts and timing of expected future cash flows as the primary measures. Management also considers trends in adversely classified loans based upon an ongoing review of those credits. With respect to pools of similar loans, an appropriate level of general allowance is determined by portfolio segment using a probability of default-loss given default ("PD/LGD") model, subject to a floor. A default can be triggered by one of several different asset quality factors, including past due status, nonaccrual status, TDR status or if the loan has had a charge-off. This PD is then combined with a LGD derived from historical charge-off data to construct a loss rate. This loss rate is then supplemented with adjustments for reasonable and supportable forecasts of relevant economic indicators, particularly the unemployment rate forecast from the Federal Open Market Committee's Summary of Economic Projections, as well as portfolio trends based on the risks present for each portfolio segment. These environmental factors include consideration </span></div><div style="margin-bottom:9pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:120%">NOTE 1 – SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (continued)</span></div><div style="margin-bottom:9pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">of portfolio trends and conditions; industry conditions; and effects of changes in credit concentrations. It is also possible that these factors could include social, political, economic, and terrorist events or activities. All of these factors are susceptible to change, which may be significant. As a result of this detailed process, the allowance results in two forms of allocations, specific and general. These two components represent the total allowance for credit losses deemed adequate to cover expected losses within the loan portfolio.</span></div><div style="margin-bottom:9pt;text-indent:36pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">Commercial loans are subject to a dual standardized grading process administered by the credit administration function. These grade assignments are performed independent of each other and a consensus is reached by credit administration and the loan review officer. Specific allowances are established in cases where management has identified significant conditions or circumstances related to an individual credit that indicate it should be evaluated on an individual basis. Considerations with respect to specific allocations for these individual credits include, but are not limited to, the following: (a) the sufficiency of the customer's cash flow or net worth to repay the loan; (b) the adequacy of the discounted value of collateral relative to the loan balance; (c) whether the loan has been criticized in a regulatory examination; (d) whether the loan is nonperforming; (e) any other reasons the ultimate collectability of the loan may be in question; or (f) any unique loan characteristics that require special monitoring.</span></div><div style="margin-bottom:9pt;text-indent:36pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">Allocations are also applied to categories of loans considered not to be individually analyzed, but for which the rate of loss is expected to be consistent with or greater than historical averages. Such allocations are based on past loss experience and information about specific borrower situations and estimated collateral values. These general pooled loan allocations are performed for portfolio segments of commercial and industrial; commercial real estate, multi-family, and construction; agri-business and agricultural; other commercial loans; and consumer 1-4 family mortgage and other consumer loans. General allocations of the allowance are determined by a historical loss rate based on the calculation of each pool's probability of default-loss given default, subject to a floor. The length of the historical period for each pool is based on the average life of the pool. The historical loss rates are all supplemented with consideration of economic conditions and portfolio trends. The risk characteristics of each of the identified portfolio segments are as follows:</span></div><div style="margin-bottom:9pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%;text-decoration:underline">Commercial and Industrial</span><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%"> - Borrowers may be subject to industry conditions including decreases in product demand; increase in material or other production costs that cannot be immediately recaptured in the sales or distribution cycle; interest rate increases that could have an adverse impact on profitability; non-payment of credit that has been extended under normal vendor terms for goods sold or services; and interruption related to the importing or exporting of production materials or sold products.</span></div><div style="margin-bottom:9pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%;text-decoration:underline">Commercial Real Estate and Multi-Family Residential</span><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%"> - Borrowers may be subject to potential adverse market conditions that cause a decrease in market value or lease rates; the potential for environmental impairment from events occurring on subject or neighboring properties; and obsolescence in location or function. Multi-Family Residential is also subject to adverse market conditions associated with a change in governmental or personal funding sources for tenants; over supply of units in a specific region; a shift in population; and reputational risks. Construction and Land Development risks include slower absorption than anticipated on speculative projects; deterioration in market conditions that may impact a project's value; unforeseen costs not considered in the original construction budget; or any other factors that may impact the completion or success of the project.</span></div><div style="margin-bottom:9pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%;text-decoration:underline">Agri-business and Agricultural</span><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%"> - Borrower may be subject to adverse market or weather conditions including changes in local or foreign demand; lower yields than anticipated; political or other impact on storage, distribution or use; foreign trade policies including tariffs; and exposure to increasing commodity prices which result in higher production, distribution or exporting costs.</span></div><div style="margin-bottom:9pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%;text-decoration:underline">Other Commercial</span><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%"> - Borrowers may be subject to the uninterrupted flow of funds to states and other political subdivisions for the purpose of debt repayments on loans held by the Bank.</span></div><div style="margin-bottom:9pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%;text-decoration:underline">Consumer 1-4 Family Mortgage</span><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%"> - Borrowers may be subject to adverse employment conditions in the local economy leading to increased default rates; decreased market values from oversupply in a geographic area; and impact to the borrowers' ability to maintain payments in the event of incremental rate increases on adjustable rate mortgages.</span></div><div style="margin-bottom:9pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%;text-decoration:underline">Other Consumer</span><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%"> - Borrowers may be subject to adverse employment conditions in the local economy which may lead to higher default rates; and decreases in the value of underlying collateral. </span></div><div style="margin-bottom:10pt;text-indent:36pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">A loan is individually analyzed for specific allocation when, based on current information and events, it is probable that the Company will be unable to collect all amounts due according to the contractual terms of the loan agreement. Loans, for which the terms have been modified and a concession has been granted for borrowers experiencing financial difficulties, are considered troubled debt restructurings and classified as individually evaluated and may be either accruing or non-accruing. Nonaccrual troubled debt restructurings follow the same policy as described above for other loans. Individual evaluation for </span></div><div style="margin-bottom:10pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:120%">NOTE 1 – SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (continued)</span></div><div style="margin-bottom:10pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">troubled debt restructurings is measured at the present value of estimated future cash flows using the loan’s effective rate at inception or at discounted collateral value for collateral dependent loans. Allocations are analyzed individually or in total for smaller-balance loans of similar nature such as all classes of consumer 1-4 family and other consumer loans, and individually for all classes of commercial and industrial, commercial real estate and multi-family, agribusiness and agricultural and other commercial loans. The Company analyzes commercial loans individually by classifying the loans as to credit risk. This analysis is performed on a quarterly basis for Special Mention, Substandard and Doubtful grade loans and annually on Pass grade loans over $250,000. Factors considered by management in determining individual evaluation include payment status, collateral value and the probability of collecting scheduled principal and interest payments when due. Loans that experience insignificant payment delays and payment shortfalls generally are not classified as individually evaluated. Management determines the significance of payment delays and payment shortfalls on a case-by-case basis, taking into consideration all of the circumstances surrounding the loan and the borrower, including the length of the delay, the reasons for the delay, the borrower’s prior payment record, and the amount of the shortfall in relation to the principal and interest owed. If a loan is individually evaluated, a portion of the allowance may be allocated so that the loan is reported, net, at the present value of estimated future cash flows using the loan’s existing rate or at the fair value of collateral less anticipated costs to sell. All classes of commercial and industrial, commercial real estate and multifamily residential, agribusiness and agricultural, other commercial and consumer 1-4 family mortgage loans that become delinquent beyond 90 days are analyzed and a charge-off is taken when it is determined that the underlying collateral, if any, is not sufficient to offset the indebtedness.</span></div><div style="margin-bottom:12pt;text-indent:36pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">Troubled debt restructured loans are considered for removal from troubled debt restructuring status in the year following modification or at time of subsequent restructuring for loans with cumulative principal forgiveness if the interest rate is considered a market rate at the time of modification and it has been performing according to the terms of the modification for a reasonable period of time long enough to observe an ability to repay under the modified terms. If removed from troubled debt restructuring status, the loan continues to be individually evaluated for specific allocation with either the present value of estimated future cash flows using the loan’s effective rate at inception or at discounted collateral value for collateral dependent loans. In addition, troubled debt restructured loans with subsequent modifications that do not have cumulative principal forgiveness are considered for removal from troubled debt restructuring status at the time of the subsequent modification if the following circumstances exist: (1) at the time of the subsequent restructuring, the borrower is not experiencing financial difficulties; (2) under the terms of the subsequent restructuring agreement no concession has been granted to the borrower; and (3)the subsequent restructuring agreement includes market terms that are no less favorable than those that would be offered for comparable new debt. Upon meeting these criteria, the loan is no longer individually evaluated and is no longer disclosed as a troubled debt restructuring.</span></div><div style="margin-bottom:12pt;text-indent:36pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">Due to the imprecise nature of estimating the allowance for credit losses, the Company's allowance for credit losses includes an unallocated component. The unallocated component of the allowance for credit losses incorporates the Company's judgmental determination of potential expected losses that may not be fully reflected in other allocations, including factors such as the level of classified credits, economic uncertainties, industry trends impacting specific portfolio segments, broad portfolio quality trends, and trends in the composition of the Company's large commercial loan portfolio and related large dollar exposures to individual borrowers. As a practical expedient, the Company has elected to disclose accrued interest separately from loan principal balances on the consolidated balance sheet. Additionally, when a loan is placed on non-accrual, interest payments are reversed through interest income.</span></div><div style="margin-bottom:12pt;text-indent:36pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">For off balance sheet credit exposures outlined in the ASU at 326-20-30-11, it is the Company's position that nearly all of the unfunded amounts on lines of credit are unconditionally cancellable, and therefore not subject to having a liability set up, which matches the current accounting conclusion in the incurred loss environment.</span></div><div style="margin-bottom:12pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:120%">Credit Quality Indicators:</span></div><div style="margin-bottom:12pt;text-indent:36pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">The Company categorizes loans into risk categories based on relevant information about the ability of borrowers to service their debt such as: current financial information, historical payment experience, credit documentation, public information, and current economic trends, among other factors. The Company analyzes commercial loans individually by classifying the loans as to credit risk. This analysis is performed on a quarterly basis for Special Mention, Substandard and Doubtful grade loans and annually on Pass grade loans over $250,000.</span></div><div style="margin-bottom:12pt;text-indent:36pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">The Company uses the following definitions for risk ratings:</span></div><div style="margin-bottom:12pt;text-indent:36pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:120%">Special Mention.</span><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%"> Loans classified as Special Mention have a potential weakness that deserves management’s close attention. If left uncorrected, these potential weaknesses may result in deterioration of the repayment prospects for the loan or of the institution’s credit position at some future date.</span></div><div style="margin-bottom:12pt;text-indent:36pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:120%">Substandard.</span><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%"> Loans classified as Substandard are inadequately protected by the current net worth and paying capacity of the obligor or of the collateral pledged, if any. Loans so classified have a well-defined weakness or weaknesses that jeopardize the liquidation of the debt. They are characterized as the distinct possibility that the institution will sustain some loss if the deficiencies are not corrected.</span></div><div style="margin-bottom:12pt;text-indent:36pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:120%">Doubtful.</span><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%"> Loans classified as Doubtful have all the weaknesses inherent in those classified as Substandard, with the added characteristics that the weaknesses make collection or liquidation in full, on the basis of currently existing facts, conditions, and values, highly questionable and improbable.</span></div><div style="margin-bottom:12pt;text-indent:36pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">Loans are considered to be "Pass" rated when they are reviewed as part of the previously described process and do not meet the criteria above with the exception of consumer troubled debt restructurings, which are evaluated and listed with Substandard commercial grade loans and consumer nonaccrual loans which are evaluated individually and listed with “Not Rated” loans. Loans listed as Not Rated are consumer loans or commercial loans with consumer characteristics included in groups of homogenous loans which are analyzed for credit quality indicators utilizing delinquency status.</span></div>
CY2021Q4	lkfn	Financing Receivable Threshold For Individually Evaluated For Impairment FinancingReceivableThresholdForIndividuallyEvaluatedForImpairment	250000	USD
CY2021Q4	us-gaap	Equity Method Investments EquityMethodInvestments	9400000	USD
CY2020Q4	us-gaap	Equity Method Investments EquityMethodInvestments	9200000	USD
CY2021Q4	us-gaap	Cash Available For Distributions CashAvailableForDistributions	2200000	USD
CY2021Q4	lkfn	Equity Method Investment Number Of Additional Required Investments EquityMethodInvestmentNumberOfAdditionalRequiredInvestments	4	partnership
CY2020Q4	us-gaap	Cash Available For Distributions CashAvailableForDistributions	2600000	USD
CY2021Q4	us-gaap	Real Estate Acquired Through Foreclosure RealEstateAcquiredThroughForeclosure	196000	USD
CY2020Q4	us-gaap	Real Estate Acquired Through Foreclosure RealEstateAcquiredThroughForeclosure	316000	USD
CY2021	us-gaap	Contractually Specified Servicing Fees Amount ContractuallySpecifiedServicingFeesAmount	1200000	USD
CY2020	us-gaap	Contractually Specified Servicing Fees Amount ContractuallySpecifiedServicingFeesAmount	1200000	USD
CY2019	us-gaap	Contractually Specified Servicing Fees Amount ContractuallySpecifiedServicingFeesAmount	1100000	USD
CY2021Q4	lkfn	Mortgage Loans On Real Estate Carrying Value MortgageLoansOnRealEstateCarryingValue	2400000	USD
CY2020Q4	lkfn	Mortgage Loans On Real Estate Carrying Value MortgageLoansOnRealEstateCarryingValue	3500000	USD
CY2021Q4	us-gaap	Mortgage Loans On Real Estate MortgageLoansOnRealEstate	375400000	USD
CY2020Q4	us-gaap	Mortgage Loans On Real Estate MortgageLoansOnRealEstate	351000000.0	USD
CY2021Q4	us-gaap	Escrow Deposit EscrowDeposit	1700000	USD
CY2021Q4	us-gaap	Treasury Stock Shares TreasuryStockShares	476816	shares
CY2020Q4	us-gaap	Treasury Stock Shares TreasuryStockShares	473660	shares
CY2021	lkfn	Shares Purchased Under Director Deferred Compensation Plan Included In Treasury Stock SharesPurchasedUnderDirectorDeferredCompensationPlanIncludedInTreasuryStock	187715	shares
CY2020	lkfn	Shares Purchased Under Director Deferred Compensation Plan Included In Treasury Stock SharesPurchasedUnderDirectorDeferredCompensationPlanIncludedInTreasuryStock	184559	shares
CY2020	us-gaap	Stock Repurchased During Period Shares StockRepurchasedDuringPeriodShares	289101	shares
CY2020	us-gaap	Treasury Stock Acquired Average Cost Per Share TreasuryStockAcquiredAverageCostPerShare	34.63
CY2021	us-gaap	Number Of Reportable Segments NumberOfReportableSegments	1	segment
CY2021	us-gaap	Number Of Reportable Segments NumberOfReportableSegments	1	segment
CY2021	us-gaap	Prior Period Reclassification Adjustment Description PriorPeriodReclassificationAdjustmentDescription	<div style="margin-bottom:12pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:120%">Reclassifications:</span></div><div style="margin-bottom:12pt;text-indent:36pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">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.</span></div>
CY2021Q4	us-gaap	Debt Securities Available For Sale Amortized Cost Excluding Accrued Interest Before Allowance For Credit Loss DebtSecuritiesAvailableForSaleAmortizedCostExcludingAccruedInterestBeforeAllowanceForCreditLoss	1376969000	USD
CY2021Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	30244000	USD
CY2021Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	8655000	USD
CY2021Q4	us-gaap	Debt Securities Available For Sale Excluding Accrued Interest DebtSecuritiesAvailableForSaleExcludingAccruedInterest	1398558000	USD
CY2020Q4	us-gaap	Debt Securities Available For Sale Amortized Cost Excluding Accrued Interest Before Allowance For Credit Loss DebtSecuritiesAvailableForSaleAmortizedCostExcludingAccruedInterestBeforeAllowanceForCreditLoss	697906000	USD
CY2020Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	37045000	USD
CY2020Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	106000	USD
CY2020Q4	us-gaap	Debt Securities Available For Sale Excluding Accrued Interest DebtSecuritiesAvailableForSaleExcludingAccruedInterest	734845000	USD
CY2021Q4	us-gaap	Available For Sale Securities Debt Maturities Next Rolling Twelve Months Amortized Cost Basis AvailableForSaleSecuritiesDebtMaturitiesNextRollingTwelveMonthsAmortizedCostBasis	3700000	USD
CY2021Q4	us-gaap	Available For Sale Securities Debt Maturities Next Rolling Twelve Months Fair Value AvailableForSaleSecuritiesDebtMaturitiesNextRollingTwelveMonthsFairValue	3704000	USD
CY2021Q4	us-gaap	Available For Sale Securities Debt Maturities Rolling Year Two Through Five Amortized Cost Basis AvailableForSaleSecuritiesDebtMaturitiesRollingYearTwoThroughFiveAmortizedCostBasis	9534000	USD
CY2021Q4	us-gaap	Available For Sale Securities Debt Maturities Rolling Year Two Through Five Fair Value AvailableForSaleSecuritiesDebtMaturitiesRollingYearTwoThroughFiveFairValue	9823000	USD
CY2021Q4	us-gaap	Available For Sale Securities Debt Maturities Rolling Year Six Through Ten Amortized Cost Basis AvailableForSaleSecuritiesDebtMaturitiesRollingYearSixThroughTenAmortizedCostBasis	52232000	USD
CY2021Q4	us-gaap	Available For Sale Securities Debt Maturities Rolling Year Six Through Ten Fair Value AvailableForSaleSecuritiesDebtMaturitiesRollingYearSixThroughTenFairValue	54892000	USD
CY2021Q4	us-gaap	Available For Sale Securities Debt Maturities Rolling After Year Ten Amortized Cost Basis AvailableForSaleSecuritiesDebtMaturitiesRollingAfterYearTenAmortizedCostBasis	823824000	USD
CY2021Q4	us-gaap	Available For Sale Securities Debt Maturities Rolling After Year Ten Fair Value AvailableForSaleSecuritiesDebtMaturitiesRollingAfterYearTenFairValue	842940000	USD
CY2021Q4	us-gaap	Available For Sale Securities Debt Maturities Single Maturity Date Amortized Cost Basis AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDateAmortizedCostBasis	889290000	USD
CY2021Q4	us-gaap	Available For Sale Securities Debt Maturities Single Maturity Date AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDate	911359000	USD
CY2021Q4	us-gaap	Available For Sale Securities Debt Maturities Without Single Maturity Date Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateAmortizedCost	487679000	USD
CY2021Q4	us-gaap	Mortgage Backed Securities Available For Sale Fair Value Disclosure MortgageBackedSecuritiesAvailableForSaleFairValueDisclosure	487199000	USD
CY2021Q4	us-gaap	Debt Securities Available For Sale Amortized Cost Excluding Accrued Interest Before Allowance For Credit Loss DebtSecuritiesAvailableForSaleAmortizedCostExcludingAccruedInterestBeforeAllowanceForCreditLoss	1376969000	USD
CY2021Q4	us-gaap	Debt Securities Available For Sale Excluding Accrued Interest DebtSecuritiesAvailableForSaleExcludingAccruedInterest	1398558000	USD
CY2021	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	13964000	USD
CY2020	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	8018000	USD
CY2019	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	57114000	USD
CY2021	us-gaap	Debt Securities Available For Sale Realized Gain Loss Excluding Other Than Temporary Impairment DebtSecuritiesAvailableForSaleRealizedGainLossExcludingOtherThanTemporaryImpairment	797000	USD
CY2020	us-gaap	Debt Securities Available For Sale Realized Gain Loss Excluding Other Than Temporary Impairment DebtSecuritiesAvailableForSaleRealizedGainLossExcludingOtherThanTemporaryImpairment	433000	USD
CY2019	us-gaap	Debt Securities Available For Sale Realized Gain Loss Excluding Other Than Temporary Impairment DebtSecuritiesAvailableForSaleRealizedGainLossExcludingOtherThanTemporaryImpairment	279000	USD
CY2021	us-gaap	Debt Securities Available For Sale Realized Loss DebtSecuritiesAvailableForSaleRealizedLoss	0	USD
CY2020	us-gaap	Debt Securities Available For Sale Realized Loss DebtSecuritiesAvailableForSaleRealizedLoss	0	USD
CY2019	us-gaap	Debt Securities Available For Sale Realized Loss DebtSecuritiesAvailableForSaleRealizedLoss	137000	USD
CY2021	lkfn	Number Of Debt Securities Available For Sale Sold At Fair Value NumberOfDebtSecuritiesAvailableForSaleSoldAtFairValue	9	shares
CY2020	lkfn	Number Of Debt Securities Available For Sale Sold At Fair Value NumberOfDebtSecuritiesAvailableForSaleSoldAtFairValue	17	shares
CY2019	lkfn	Number Of Debt Securities Available For Sale Sold At Fair Value NumberOfDebtSecuritiesAvailableForSaleSoldAtFairValue	46	shares
CY2021Q4	us-gaap	Debt Securities Available For Sale Restricted DebtSecuritiesAvailableForSaleRestricted	300800000	USD
CY2020Q4	us-gaap	Debt Securities Available For Sale Restricted DebtSecuritiesAvailableForSaleRestricted	382700000	USD
CY2021Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months	496891000	USD
CY2021Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	6714000	USD
CY2021Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger	51468000	USD
CY2021Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	1941000	USD
CY2021Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position DebtSecuritiesAvailableForSaleUnrealizedLossPosition	548359000	USD
CY2021Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Accumulated Loss DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss	8655000	USD
CY2020Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months	26724000	USD
CY2020Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	89000	USD
CY2020Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger	3112000	USD
CY2020Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	17000	USD
CY2020Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position DebtSecuritiesAvailableForSaleUnrealizedLossPosition	29836000	USD
CY2020Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Accumulated Loss DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss	106000	USD
CY2021Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Number Of Positions DebtSecuritiesAvailableForSaleUnrealizedLossPositionNumberOfPositions	125	position
CY2021Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Number Of Positions DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsNumberOfPositions	117	position
CY2021Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Number Of Positions DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerNumberOfPositions	8	position
CY2020Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Number Of Positions DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsNumberOfPositions	7	position
CY2020Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Number Of Positions DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerNumberOfPositions	1	position
CY2020Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Number Of Positions DebtSecuritiesAvailableForSaleUnrealizedLossPositionNumberOfPositions	8	position
CY2021Q4	us-gaap	Debt Securities Available For Sale Accrued Interest After Allowance For Credit Loss DebtSecuritiesAvailableForSaleAccruedInterestAfterAllowanceForCreditLoss	7400000	USD
CY2021Q4	lkfn	Debt Securities Available For Sale Percentage Backed By Government Or Investment Grade DebtSecuritiesAvailableForSalePercentageBackedByGovernmentOrInvestmentGrade	0.99
CY2021Q4	us-gaap	Financing Receivable Excluding Accrued Interest Before Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss	4291105000	USD
CY2020Q4	us-gaap	Financing Receivable Excluding Accrued Interest Before Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss	4657183000	USD
CY2021Q4	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	67773000	USD
CY2020Q4	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	61408000	USD
CY2021Q4	us-gaap	Financing Receivable Deferred Income FinancingReceivableDeferredIncome	3264000	USD
CY2020Q4	us-gaap	Financing Receivable Deferred Income FinancingReceivableDeferredIncome	8027000	USD
CY2021Q4	us-gaap	Financing Receivable Excluding Accrued Interest After Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestAfterAllowanceForCreditLoss	4220068000	USD
CY2020Q4	us-gaap	Financing Receivable Excluding Accrued Interest After Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestAfterAllowanceForCreditLoss	4587748000	USD
CY2021Q4	us-gaap	Financing Receivable Accrued Interest After Allowance For Credit Loss FinancingReceivableAccruedInterestAfterAllowanceForCreditLoss	10000000	USD
CY2021Q4	us-gaap	Mortgage Loans In Process Of Foreclosure Amount MortgageLoansInProcessOfForeclosureAmount	350000	USD
CY2020Q4	us-gaap	Mortgage Loans In Process Of Foreclosure Amount MortgageLoansInProcessOfForeclosureAmount	19000	USD
CY2020Q4	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	61408000	USD
CY2021	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	1077000	USD
CY2021	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	5983000	USD
CY2021	us-gaap	Financing Receivable Allowance For Credit Losses Recovery FinancingReceivableAllowanceForCreditLossesRecovery	2221000	USD
CY2021	us-gaap	Financing Receivable Allowance For Credit Loss Writeoff After Recovery FinancingReceivableAllowanceForCreditLossWriteoffAfterRecovery	3762000	USD
CY2021Q4	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	67773000	USD
CY2021	lkfn	Loan Amount Of Credit Quality Analysis LoanAmountOfCreditQualityAnalysis	250000	USD
CY2021Q4	us-gaap	Financing Receivable Originated In Current Fiscal Year FinancingReceivableOriginatedInCurrentFiscalYear	839292000	USD
CY2021Q4	us-gaap	Financing Receivable Originated In Fiscal Year Before Latest Fiscal Year FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear	719840000	USD
CY2021Q4	us-gaap	Financing Receivable Originated Two Years Before Latest Fiscal Year FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear	414127000	USD
CY2021Q4	us-gaap	Financing Receivable Originated Three Years Before Latest Fiscal Year FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear	207202000	USD
CY2021Q4	us-gaap	Financing Receivable Originated Four Years Before Latest Fiscal Year FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear	217546000	USD
CY2021Q4	us-gaap	Financing Receivable Originated Five Or More Years Before Latest Fiscal Year FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear	266255000	USD
CY2021Q4	us-gaap	Financing Receivable Revolving Converted To Term Loan FinancingReceivableRevolvingConvertedToTermLoan	2664262000	USD
CY2021Q4	us-gaap	Financing Receivable Revolving FinancingReceivableRevolving	1623579000	USD
CY2021Q4	us-gaap	Notes Receivable Gross NotesReceivableGross	4287841000	USD
CY2021Q4	lkfn	Financing Receivable Amortized Cost Nonaccrual FinancingReceivableAmortizedCostNonaccrual	14973000	USD
CY2021Q4	lkfn	Financing Receivable Amortized Cost Nonaccrual With No Allowance Of Credit Loss FinancingReceivableAmortizedCostNonaccrualWithNoAllowanceOfCreditLoss	7711000	USD
CY2021Q4	lkfn	Financing Receivable Amortized Cost Before Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAmortizedCostBeforeAllowanceForCreditLossExcludingAccruedInterest	4287841000	USD
CY2020	lkfn	Financing Receivable Loan Portfolio Deferrals Covid19 Percentage Of Loan Portfolio FinancingReceivableLoanPortfolioDeferralsCovid19PercentageOfLoanPortfolio	0.022
CY2021Q4	lkfn	Financing Receivable Troubled Debt Restructuring Accruing FinancingReceivableTroubledDebtRestructuringAccruing	5121000	USD
CY2020Q4	lkfn	Financing Receivable Troubled Debt Restructuring Accruing FinancingReceivableTroubledDebtRestructuringAccruing	5237000	USD
CY2021Q4	lkfn	Financing Receivable Troubled Debt Restructuring Nonaccrual FinancingReceivableTroubledDebtRestructuringNonaccrual	6218000	USD
CY2020Q4	lkfn	Financing Receivable Troubled Debt Restructuring Nonaccrual FinancingReceivableTroubledDebtRestructuringNonaccrual	6476000	USD
CY2021Q4	lkfn	Financing Receivable Modifications FinancingReceivableModifications	11339000	USD
CY2020Q4	lkfn	Financing Receivable Modifications FinancingReceivableModifications	11713000	USD
CY2021	us-gaap	Financing Receivable Modifications Number Of Contracts2 FinancingReceivableModificationsNumberOfContracts2	8	loan
CY2021Q4	us-gaap	Financing Receivable Modifications Recorded Investment FinancingReceivableModificationsRecordedInvestment	2200000	USD
CY2021	lkfn	Increase Decrease In Allowance For Loan Loss IncreaseDecreaseInAllowanceForLoanLoss	423000	USD
CY2021	lkfn	Financing Receivable Loan Portfolio Deferrals Covid19 FinancingReceivableLoanPortfolioDeferralsCovid19	11000	USD
CY2021	us-gaap	Financing Receivable Modifications Pre Modification Recorded Investment2 FinancingReceivableModificationsPreModificationRecordedInvestment2	6066000	USD
CY2021	us-gaap	Financing Receivable Modifications Post Modification Recorded Investment2 FinancingReceivableModificationsPostModificationRecordedInvestment2	5533000	USD
CY2020	lkfn	Financing Receivable Loan Portfolio Deferrals Covid19 FinancingReceivableLoanPortfolioDeferralsCovid19	100700000	USD
CY2020	lkfn	Financing Receivable Loan Portfolio Deferrals Covid19 Number Of Borrowers FinancingReceivableLoanPortfolioDeferralsCOVID19NumberOfBorrowers	49	borrower
CY2020	lkfn	Financing Receivable Loan Portfolio Covid19 Deferral Period FinancingReceivableLoanPortfolioCOVID19DeferralPeriod	P90D
CY2019	lkfn	Increase Decrease In Allowance For Loan Loss IncreaseDecreaseInAllowanceForLoanLoss	484000	USD
CY2019	us-gaap	Financing Receivable Modifications Number Of Contracts2 FinancingReceivableModificationsNumberOfContracts2	1	loan
CY2019	us-gaap	Financing Receivable Modifications Pre Modification Recorded Investment2 FinancingReceivableModificationsPreModificationRecordedInvestment2	35	USD
CY2019	us-gaap	Financing Receivable Modifications Post Modification Recorded Investment2 FinancingReceivableModificationsPostModificationRecordedInvestment2	35	USD
CY2019	us-gaap	Financing Receivable Modifications Number Of Contracts2 FinancingReceivableModificationsNumberOfContracts2	1	loan
CY2019	lkfn	Financing Receivable Modifications Repayment Terms Extension Period FinancingReceivableModificationsRepaymentTermsExtensionPeriod	P1M
CY2021	us-gaap	Financing Receivable Modifications Subsequent Default Number Of Contracts1 FinancingReceivableModificationsSubsequentDefaultNumberOfContracts1	0	loan
CY2021	us-gaap	Financing Receivable Modifications Subsequent Default Recorded Investment1 FinancingReceivableModificationsSubsequentDefaultRecordedInvestment1	0	USD
CY2020	us-gaap	Financing Receivable Modifications Subsequent Default Number Of Contracts1 FinancingReceivableModificationsSubsequentDefaultNumberOfContracts1	0	loan
CY2020	us-gaap	Financing Receivable Modifications Subsequent Default Recorded Investment1 FinancingReceivableModificationsSubsequentDefaultRecordedInvestment1	0	USD
CY2019	us-gaap	Financing Receivable Modifications Subsequent Default Number Of Contracts1 FinancingReceivableModificationsSubsequentDefaultNumberOfContracts1	1000	loan
CY2019	us-gaap	Financing Receivable Modifications Subsequent Default Recorded Investment1 FinancingReceivableModificationsSubsequentDefaultRecordedInvestment1	601000	USD
CY2019Q4	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	50652000	USD
CY2020	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	14770000	USD
CY2020	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	5253000	USD
CY2020	us-gaap	Financing Receivable Allowance For Credit Losses Recovery FinancingReceivableAllowanceForCreditLossesRecovery	1239000	USD
CY2020	us-gaap	Financing Receivable Allowance For Credit Loss Writeoff After Recovery FinancingReceivableAllowanceForCreditLossWriteoffAfterRecovery	4014000	USD
CY2020Q4	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	61408000	USD
CY2018Q4	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	48453000	USD
CY2019	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	3235000	USD
CY2019	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	1910000	USD
CY2019	us-gaap	Financing Receivable Allowance For Credit Losses Recovery FinancingReceivableAllowanceForCreditLossesRecovery	874000	USD
CY2019	us-gaap	Financing Receivable Allowance For Credit Loss Writeoff After Recovery FinancingReceivableAllowanceForCreditLossWriteoffAfterRecovery	1036000	USD
CY2019Q4	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	50652000	USD
CY2020Q4	us-gaap	Financing Receivable Allowance For Credit Losses Individually Evaluated For Impairment1 FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1	8041000	USD
CY2020Q4	us-gaap	Financing Receivable Allowance For Credit Losses Collectively Evaluated For Impairment FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment	53367000	USD
CY2020Q4	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	61408000	USD
CY2020Q4	us-gaap	Financing Receivable Individually Evaluated For Impairment FinancingReceivableIndividuallyEvaluatedForImpairment	20179000	USD
CY2020Q4	us-gaap	Financing Receivable Collectively Evaluated For Impairment FinancingReceivableCollectivelyEvaluatedForImpairment	4628977000	USD
CY2020Q4	us-gaap	Loans And Leases Receivable Net Of Deferred Income LoansAndLeasesReceivableNetOfDeferredIncome	4649156000	USD
CY2020Q4	us-gaap	Impaired Financing Receivable Unpaid Principal Balance ImpairedFinancingReceivableUnpaidPrincipalBalance	22939000	USD
CY2020Q4	us-gaap	Impaired Financing Receivable Recorded Investment ImpairedFinancingReceivableRecordedInvestment	20179000	USD
CY2020Q4	us-gaap	Financing Receivable Allowance For Credit Losses Individually Evaluated For Impairment1 FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1	8041000	USD
CY2020	us-gaap	Impaired Financing Receivable Average Recorded Investment ImpairedFinancingReceivableAverageRecordedInvestment	23362000	USD
CY2020	us-gaap	Impaired Financing Receivable Interest Income Accrual Method ImpairedFinancingReceivableInterestIncomeAccrualMethod	390000	USD
CY2020	us-gaap	Impaired Financing Receivable Interest Income Cash Basis Method ImpairedFinancingReceivableInterestIncomeCashBasisMethod	385000	USD
CY2019	us-gaap	Impaired Financing Receivable Average Recorded Investment ImpairedFinancingReceivableAverageRecordedInvestment	26464000	USD
CY2019	us-gaap	Impaired Financing Receivable Interest Income Accrual Method ImpairedFinancingReceivableInterestIncomeAccrualMethod	770000	USD
CY2019	us-gaap	Impaired Financing Receivable Interest Income Cash Basis Method ImpairedFinancingReceivableInterestIncomeCashBasisMethod	651000	USD
CY2020Q4	lkfn	Financing Receivable Amortized Cost Nonaccrual FinancingReceivableAmortizedCostNonaccrual	13369000	USD
CY2020Q4	lkfn	Financing Receivable Amortized Cost Nonaccrual With No Allowance Of Credit Loss FinancingReceivableAmortizedCostNonaccrualWithNoAllowanceOfCreditLoss	4649156000	USD
CY2020Q4	us-gaap	Loans And Leases Receivable Net Of Deferred Income LoansAndLeasesReceivableNetOfDeferredIncome	4649156000	USD
CY2021Q4	us-gaap	Servicing Asset At Fair Value Amount ServicingAssetAtFairValueAmount	3100000	USD
CY2021	us-gaap	Servicing Asset At Amortized Cost Other Than Temporary Impairments ServicingAssetAtAmortizedCostOtherThanTemporaryImpairments	715000	USD
CY2021Q4	us-gaap	Servicing Asset At Amortized Value ServicingAssetAtAmortizedValue	2400000	USD
CY2021	lkfn	Percentage Of Discount From Appraised Value PercentageOfDiscountFromAppraisedValue	0.034
CY2021	lkfn	Weighted Average Maturity Of Residential Mortgages WeightedAverageMaturityOfResidentialMortgages	P20Y
CY2021Q4	lkfn	Premises And Improvements Gross PremisesAndImprovementsGross	58716000	USD
CY2021	us-gaap	Servicing Assets And Servicing Liabilities At Fair Value Assumptions Used To Estimate Fair Value Qualitative Information ServicingAssetsAndServicingLiabilitiesAtFairValueAssumptionsUsedToEstimateFairValueQualitativeInformation	249
CY2021	us-gaap	Servicing Assets And Servicing Liabilities At Fair Value Assumptions Used To Estimate Fair Value Discount Rate ServicingAssetsAndServicingLiabilitiesAtFairValueAssumptionsUsedToEstimateFairValueDiscountRate	0.095
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
CY2021Q4	us-gaap	Land Land	12472000	USD
CY2020Q4	us-gaap	Land Land	12472000	USD
CY2020Q4	lkfn	Premises And Improvements Gross PremisesAndImprovementsGross	55682000	USD
CY2021Q4	lkfn	Equipment And Furniture Gross EquipmentAndFurnitureGross	39278000	USD
CY2020Q4	lkfn	Equipment And Furniture Gross EquipmentAndFurnitureGross	38133000	USD
CY2021Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	110466000	USD
CY2020Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	106287000	USD
CY2021Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	51157000	USD
CY2020Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	46989000	USD
CY2021Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	59309000	USD
CY2020Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	59298000	USD
CY2021Q4	us-gaap	Goodwill Gross GoodwillGross	5000000.0	USD
CY2021Q4	us-gaap	Noninterest Bearing Deposit Liabilities NoninterestBearingDepositLiabilities	1895481000	USD
CY2020Q4	us-gaap	Noninterest Bearing Deposit Liabilities NoninterestBearingDepositLiabilities	1538331000	USD
CY2021Q4	us-gaap	Deposits Savings Deposits DepositsSavingsDeposits	409343000	USD
CY2020Q4	us-gaap	Deposits Savings Deposits DepositsSavingsDeposits	312702000	USD
CY2021Q4	lkfn	Other Time Deposits OtherTimeDeposits	202395000	USD
CY2020Q4	lkfn	Other Time Deposits OtherTimeDeposits	239582000	USD
CY2021Q4	lkfn	Time Deposits100000 To250000 TimeDeposits100000To250000	227606000	USD
CY2020Q4	lkfn	Time Deposits100000 To250000 TimeDeposits100000To250000	271337000	USD
CY2021Q4	lkfn	Timedeposits250000 Ormore Timedeposits250000Ormore	399517000	USD
CY2020Q4	lkfn	Timedeposits250000 Ormore Timedeposits250000Ormore	513900000	USD
CY2021Q4	us-gaap	Deposits Deposits	5735407000	USD
CY2020Q4	us-gaap	Deposits Deposits	5036805000	USD
CY2021Q4	us-gaap	Time Deposit Maturities Year One TimeDepositMaturitiesYearOne	591740000	USD
CY2021Q4	us-gaap	Time Deposit Maturities Year Two TimeDepositMaturitiesYearTwo	174035000	USD
CY2021Q4	us-gaap	Time Deposit Maturities Year Three TimeDepositMaturitiesYearThree	37600000	USD
CY2021Q4	us-gaap	Time Deposit Maturities Year Four TimeDepositMaturitiesYearFour	13704000	USD
CY2021Q4	us-gaap	Time Deposit Maturities Year Five TimeDepositMaturitiesYearFive	12091000	USD
CY2021Q4	us-gaap	Time Deposit Maturities After Year Five TimeDepositMaturitiesAfterYearFive	348000	USD
CY2021Q4	us-gaap	Time Deposits TimeDeposits	829518000	USD
CY2021Q4	lkfn	Deposits Available To Bank DepositsAvailableToBank	100000000.0	USD
CY2021Q4	lkfn	Amount Of Deposits Drawn AmountOfDepositsDrawn	10000000.0	USD
CY2020Q4	lkfn	Deposits Available To Bank DepositsAvailableToBank	100000000.0	USD
CY2020Q4	lkfn	Amount Of Deposits Drawn AmountOfDepositsDrawn	10000000.0	USD
	us-gaap	Proceeds From Issuance Of Trust Preferred Securities ProceedsFromIssuanceOfTrustPreferredSecurities	30000000.0	USD
CY2021Q4	lkfn	Pledged Financial Instruments Not Separately Reported Residential Mortgage Loans And Mortgage Related Securities Available For Sale For Federal Home Bank Debt PledgedFinancialInstrumentsNotSeparatelyReportedResidentialMortgageLoansAndMortgageRelatedSecuritiesAvailableForSaleForFederalHomeBankDebt	478400000	USD
CY2020Q4	lkfn	Pledged Financial Instruments Not Separately Reported Residential Mortgage Loans And Mortgage Related Securities Available For Sale For Federal Home Bank Debt PledgedFinancialInstrumentsNotSeparatelyReportedResidentialMortgageLoansAndMortgageRelatedSecuritiesAvailableForSaleForFederalHomeBankDebt	611200000	USD
CY2021Q4	us-gaap	Federal Home Loan Bank Stock FederalHomeLoanBankStock	10400000	USD
CY2020Q4	us-gaap	Federal Home Loan Bank Stock FederalHomeLoanBankStock	10400000	USD
CY2021Q4	lkfn	Borrowing Capacity Federal Home Loan Bank BorrowingCapacityFederalHomeLoanBank	800000000.0	USD
CY2021Q4	us-gaap	Line Of Credit Facility Current Borrowing Capacity LineOfCreditFacilityCurrentBorrowingCapacity	227800000	USD
CY2021Q4	lkfn	Pledged Financial Instruments Not Separately Reported Commercial Loans For Federal Reserve Bank Debt PledgedFinancialInstrumentsNotSeparatelyReportedCommercialLoansForFederalReserveBankDebt	804400000	USD
CY2020Q4	lkfn	Pledged Financial Instruments Not Separately Reported Commercial Loans For Federal Reserve Bank Debt PledgedFinancialInstrumentsNotSeparatelyReportedCommercialLoansForFederalReserveBankDebt	557200000	USD
CY2021Q4	lkfn	Borrowing Capacity Federal Reserve Bank BorrowingCapacityFederalReserveBank	616500000	USD
CY2020Q4	lkfn	Borrowing Capacity Federal Reserve Bank BorrowingCapacityFederalReserveBank	490400000	USD
CY2021Q4	us-gaap	Line Of Credit Facility Remaining Borrowing Capacity LineOfCreditFacilityRemainingBorrowingCapacity	350000000.0	USD
CY2020Q4	us-gaap	Line Of Credit Facility Remaining Borrowing Capacity LineOfCreditFacilityRemainingBorrowingCapacity	350000000.0	USD
CY2021Q4	lkfn	Line Of Credit Facility Remaining Borrowing Capacity Number Of Banks LineOfCreditFacilityRemainingBorrowingCapacityNumberOfBanks	11	bank
CY2020Q4	lkfn	Line Of Credit Facility Remaining Borrowing Capacity Number Of Banks LineOfCreditFacilityRemainingBorrowingCapacityNumberOfBanks	11	bank
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CY2021Q4	lkfn	Integral Multiple Subordinated Debentures May Be Redeemed In IntegralMultipleSubordinatedDebenturesMayBeRedeemedIn	1000	USD
CY2021Q4	lkfn	Percentage Of Principal Amount Subordinated Debentures May Be Redeemed At PercentageOfPrincipalAmountSubordinatedDebenturesMayBeRedeemedAt	1
CY2019Q4	us-gaap	Payments For Repurchase Of Trust Preferred Securities PaymentsForRepurchaseOfTrustPreferredSecurities	30000000.0	USD
CY2019Q4	lkfn	Percentage Of Principal Amount Subordinated Debentures May Be Redeemed At PercentageOfPrincipalAmountSubordinatedDebenturesMayBeRedeemedAt	1
CY2019Q4	us-gaap	Debt Instrument Redemption Price Percentage Of Principal Amount Redeemed DebtInstrumentRedemptionPricePercentageOfPrincipalAmountRedeemed	1
CY2019Q4	us-gaap	Debt Instrument Redemption Price Percentage DebtInstrumentRedemptionPricePercentage	1
CY2021	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	21329000	USD
CY2020	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	20032000	USD
CY2019	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	19430000	USD
CY2021	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-1249000	USD
CY2020	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-1688000	USD
CY2019	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-408000	USD
CY2021	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	1892000	USD
CY2020	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	1484000	USD
CY2019	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	1394000	USD
CY2021	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-261000	USD
CY2020	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-289000	USD
CY2019	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-78000	USD
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	21711000	USD
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	19539000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	20338000	USD
CY2021	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.21
CY2021	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	24663000	USD
CY2020	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	21814000	USD
CY2019	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	22551000	USD
CY2021	lkfn	Interest Income Security Tax Exempt InterestIncomeSecurityTaxExempt	2822000	USD
CY2020	lkfn	Interest Income Security Tax Exempt InterestIncomeSecurityTaxExempt	1925000	USD
CY2019	lkfn	Interest Income Security Tax Exempt InterestIncomeSecurityTaxExempt	1682000	USD
CY2021	us-gaap	Income Tax Reconciliation Nondeductible Expense IncomeTaxReconciliationNondeductibleExpense	116000	USD
CY2020	us-gaap	Income Tax Reconciliation Nondeductible Expense IncomeTaxReconciliationNondeductibleExpense	117000	USD
CY2019	us-gaap	Income Tax Reconciliation Nondeductible Expense IncomeTaxReconciliationNondeductibleExpense	194000	USD
CY2021	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	1288000	USD
CY2020	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	944000	USD
CY2019	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	1040000	USD
CY2021	lkfn	Income Tax Reconciliation Deductions Captive Insurance Premium Income IncomeTaxReconciliationDeductionsCaptiveInsurancePremiumIncome	303000	USD
CY2020	lkfn	Income Tax Reconciliation Deductions Captive Insurance Premium Income IncomeTaxReconciliationDeductionsCaptiveInsurancePremiumIncome	227000	USD
CY2019	lkfn	Income Tax Reconciliation Deductions Captive Insurance Premium Income IncomeTaxReconciliationDeductionsCaptiveInsurancePremiumIncome	310000	USD
CY2021	us-gaap	Income Tax Reconciliation Tax Credits IncomeTaxReconciliationTaxCredits	578000	USD
CY2020	us-gaap	Income Tax Reconciliation Tax Credits IncomeTaxReconciliationTaxCredits	540000	USD
CY2019	us-gaap	Income Tax Reconciliation Tax Credits IncomeTaxReconciliationTaxCredits	548000	USD
CY2021	us-gaap	Income Tax Reconciliation Deductions Other IncomeTaxReconciliationDeductionsOther	596000	USD
CY2020	us-gaap	Income Tax Reconciliation Deductions Other IncomeTaxReconciliationDeductionsOther	595000	USD
CY2019	us-gaap	Income Tax Reconciliation Deductions Other IncomeTaxReconciliationDeductionsOther	573000	USD
CY2021	lkfn	Effective Income Tax Rate Reconciliation Deduction Long Term Incentive Plan Amount EffectiveIncomeTaxRateReconciliationDeductionLongTermIncentivePlanAmount	274000	USD
CY2020	lkfn	Effective Income Tax Rate Reconciliation Deduction Long Term Incentive Plan Amount EffectiveIncomeTaxRateReconciliationDeductionLongTermIncentivePlanAmount	58000	USD
CY2019	lkfn	Effective Income Tax Rate Reconciliation Deduction Long Term Incentive Plan Amount EffectiveIncomeTaxRateReconciliationDeductionLongTermIncentivePlanAmount	421000	USD
CY2021	us-gaap	Income Tax Reconciliation Nondeductible Expense Share Based Compensation Cost IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost	156000	USD
CY2020	us-gaap	Income Tax Reconciliation Nondeductible Expense Share Based Compensation Cost IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost	0	USD
CY2019	us-gaap	Income Tax Reconciliation Nondeductible Expense Share Based Compensation Cost IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost	0	USD
CY2021	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	61000	USD
CY2020	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	9000	USD
CY2019	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	87000	USD
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	21711000	USD
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	19539000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	20338000	USD
CY2021Q4	lkfn	Deferred Tax Assets Bad Debts DeferredTaxAssetsBadDebts	17321000	USD
CY2020Q4	lkfn	Deferred Tax Assets Bad Debts DeferredTaxAssetsBadDebts	15634000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Employee Compensation DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeCompensation	2351000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Employee Compensation DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeCompensation	2006000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	745000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	24208000	USD
CY2021Q4	lkfn	Deferred Tax Assets Nonaccrual Loan Interest DeferredTaxAssetsNonaccrualLoanInterest	600000	USD
CY2020Q4	lkfn	Deferred Tax Assets Nonaccrual Loan Interest DeferredTaxAssetsNonaccrualLoanInterest	892000	USD
CY2021Q4	lkfn	Deferred Tax Assets Long Term Incentive Plan DeferredTaxAssetsLongTermIncentivePlan	1896000	USD
CY2020Q4	lkfn	Deferred Tax Assets Long Term Incentive Plan DeferredTaxAssetsLongTermIncentivePlan	1212000	USD
CY2021Q4	lkfn	Deferred Tax Assets Lease Liability DeferredTaxAssetsLeaseLiability	1078000	USD
CY2020Q4	lkfn	Deferred Tax Assets Lease Liability DeferredTaxAssetsLeaseLiability	1190000	USD
CY2021Q4	lkfn	Deferred Tax Assets Deferred Loan Fees DeferredTaxAssetsDeferredLoanFees	771000	USD
CY2020Q4	lkfn	Deferred Tax Assets Deferred Loan Fees DeferredTaxAssetsDeferredLoanFees	0	USD
CY2021Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	191000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	21679000	USD
CY2021Q4	lkfn	Deferred Tax Liabilities Depreciation DeferredTaxLiabilitiesDepreciation	4279000	USD
CY2020Q4	lkfn	Deferred Tax Liabilities Depreciation DeferredTaxLiabilitiesDepreciation	4718000	USD
CY2021Q4	us-gaap	Deferred Tax Liabilities Mortgage Servicing Rights DeferredTaxLiabilitiesMortgageServicingRights	717000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities Mortgage Servicing Rights DeferredTaxLiabilitiesMortgageServicingRights	1162000	USD
CY2021Q4	lkfn	Deferred Tax Liabilities Spill Over Dividend DeferredTaxLiabilitiesSpillOverDividend	1180000	USD
CY2020Q4	lkfn	Deferred Tax Liabilities Spill Over Dividend DeferredTaxLiabilitiesSpillOverDividend	1180000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	13859000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	10250000	USD
CY2021Q4	lkfn	Deferred Tax Liabilities State Taxes DeferredTaxLiabilitiesStateTaxes	679000	USD
CY2020Q4	lkfn	Deferred Tax Liabilities State Taxes DeferredTaxLiabilitiesStateTaxes	524000	USD
CY2021Q4	us-gaap	Deferred Tax Liabilities Goodwill And Intangible Assets Intangible Assets DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets	1270000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities Goodwill And Intangible Assets Intangible Assets DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets	1265000	USD
CY2021Q4	us-gaap	Deferred Tax Liabilities Prepaid Expenses DeferredTaxLiabilitiesPrepaidExpenses	952000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities Prepaid Expenses DeferredTaxLiabilitiesPrepaidExpenses	948000	USD
CY2021Q4	lkfn	Deferred Tax Liabilities Lease Right Of Use Assets DeferredTaxLiabilitiesLeaseRightOfUseAssets	1078000	USD
CY2020Q4	lkfn	Deferred Tax Liabilities Lease Right Of Use Assets DeferredTaxLiabilitiesLeaseRightOfUseAssets	1190000	USD
CY2021Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	194000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	442000	USD
CY2021Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	10349000	USD
CY2020Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	11429000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	0	USD
CY2020Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	0	USD
CY2021Q4	lkfn	Deferred Tax Assets Unrealized Gain Losses On Available For Sale Securities Gross DeferredTaxAssetsUnrealizedGainLossesOnAvailableForSaleSecuritiesGross	-4500000	USD
CY2020Q4	lkfn	Deferred Tax Assets Unrealized Gain Losses On Available For Sale Securities Gross DeferredTaxAssetsUnrealizedGainLossesOnAvailableForSaleSecuritiesGross	-7800000	USD
CY2021Q4	lkfn	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Pensions And Postretirement Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPensionsAndPostretirementBenefits	319000	USD
CY2020Q4	lkfn	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Pensions And Postretirement Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPensionsAndPostretirementBenefits	476000	USD
CY2021Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	0	USD
CY2020Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	0	USD
CY2021	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Expense UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense	0	USD
CY2019	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Expense UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense	0	USD
CY2020	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Expense UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense	0	USD
CY2020Q4	us-gaap	Loans And Leases Receivable Related Parties LoansAndLeasesReceivableRelatedParties	104694000	USD
CY2019Q4	us-gaap	Loans And Leases Receivable Related Parties LoansAndLeasesReceivableRelatedParties	83980000	USD
CY2021	us-gaap	Loans And Leases Receivable Related Parties Additions LoansAndLeasesReceivableRelatedPartiesAdditions	74115000	USD
CY2020	us-gaap	Loans And Leases Receivable Related Parties Additions LoansAndLeasesReceivableRelatedPartiesAdditions	120049000	USD
CY2021	lkfn	Effect Of Changes In Related Parties EffectOfChangesInRelatedParties	-62000	USD
CY2020	lkfn	Effect Of Changes In Related Parties EffectOfChangesInRelatedParties	1650000	USD
CY2021	us-gaap	Loans And Leases Receivable Related Parties Proceeds LoansAndLeasesReceivableRelatedPartiesProceeds	78882000	USD
CY2020	us-gaap	Loans And Leases Receivable Related Parties Proceeds LoansAndLeasesReceivableRelatedPartiesProceeds	100985000	USD
CY2021Q4	us-gaap	Loans And Leases Receivable Related Parties LoansAndLeasesReceivableRelatedParties	99865000	USD
CY2020Q4	us-gaap	Loans And Leases Receivable Related Parties LoansAndLeasesReceivableRelatedParties	104694000	USD
CY2021Q4	us-gaap	Due To Related Parties Current And Noncurrent DueToRelatedPartiesCurrentAndNoncurrent	30200000	USD
CY2020Q4	us-gaap	Due To Related Parties Current And Noncurrent DueToRelatedPartiesCurrentAndNoncurrent	36800000	USD
CY2008Q2	lkfn	Share Based Compensation Shares Authorized Under Equity Incentive Plans ShareBasedCompensationSharesAuthorizedUnderEquityIncentivePlans	1125000	shares
CY2021Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Available For Grant ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant	454308	shares
CY2021	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	7200000	USD
CY2020	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	1800000	USD
CY2019	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	4200000	USD
CY2021	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	1800000	USD
CY2020	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	500000	USD
CY2019	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	1100000	USD
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross	0	shares
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross	0	shares
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross	0	shares
CY2021	lkfn	Share Based Compensation Arrangement By Share Based Payment Award Plan Modification ShareBasedCompensationArrangementByShareBasedPaymentAwardPlanModification	0	shares
CY2021Q4	us-gaap	Derivative Asset Fair Value Gross Liability DerivativeAssetFairValueGrossLiability	0	USD
CY2021Q4	us-gaap	Derivative Assets DerivativeAssets	14309000	USD
CY2021	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 0.00% for 2015 to 2.50% by 2019. The capital conservation buffer for 2021 and 2020 was 2.50%. The net unrealized gain or loss on available-for-sale securities is not included in computing regulatory capital.
CY2021Q4	us-gaap	Statutory Accounting Practices Statutory Amount Available For Dividend Payments StatutoryAccountingPracticesStatutoryAmountAvailableForDividendPayments	106900000	USD
CY2021Q4	us-gaap	Derivative Fair Value Of Derivative Asset DerivativeFairValueOfDerivativeAsset	14309000	USD
CY2021Q4	us-gaap	Derivative Collateral Obligation To Return Securities DerivativeCollateralObligationToReturnSecurities	0	USD
CY2021Q4	us-gaap	Derivative Collateral Obligation To Return Cash DerivativeCollateralObligationToReturnCash	2255000	USD
CY2021Q4	us-gaap	Derivative Fair Value Of Derivative Asset Amount Not Offset Against Collateral DerivativeFairValueOfDerivativeAssetAmountNotOffsetAgainstCollateral	12054000	USD
CY2021Q4	us-gaap	Derivative Fair Value Of Derivative Liability DerivativeFairValueOfDerivativeLiability	14329000	USD
CY2021Q4	us-gaap	Derivative Liability Fair Value Gross Asset DerivativeLiabilityFairValueGrossAsset	0	USD
CY2021Q4	us-gaap	Derivative Liabilities DerivativeLiabilities	14329000	USD
CY2021Q4	us-gaap	Derivative Collateral Right To Reclaim Securities DerivativeCollateralRightToReclaimSecurities	0	USD
CY2021Q4	us-gaap	Derivative Collateral Right To Reclaim Cash DerivativeCollateralRightToReclaimCash	7995000	USD
CY2021Q4	us-gaap	Derivative Fair Value Of Derivative Liability Amount Not Offset Against Collateral DerivativeFairValueOfDerivativeLiabilityAmountNotOffsetAgainstCollateral	6334000	USD
CY2020Q4	us-gaap	Derivative Fair Value Of Derivative Asset DerivativeFairValueOfDerivativeAsset	21764000	USD
CY2020Q4	us-gaap	Derivative Asset Fair Value Gross Liability DerivativeAssetFairValueGrossLiability	0	USD
CY2020Q4	us-gaap	Derivative Assets DerivativeAssets	21764000	USD
CY2020Q4	us-gaap	Derivative Collateral Obligation To Return Securities DerivativeCollateralObligationToReturnSecurities	0	USD
CY2020Q4	us-gaap	Derivative Collateral Obligation To Return Cash DerivativeCollateralObligationToReturnCash	0	USD
CY2020Q4	us-gaap	Derivative Fair Value Of Derivative Asset Amount Not Offset Against Collateral DerivativeFairValueOfDerivativeAssetAmountNotOffsetAgainstCollateral	21764000	USD
CY2020Q4	us-gaap	Derivative Fair Value Of Derivative Liability DerivativeFairValueOfDerivativeLiability	21794000	USD
CY2020Q4	us-gaap	Derivative Liability Fair Value Gross Asset DerivativeLiabilityFairValueGrossAsset	0	USD
CY2020Q4	us-gaap	Derivative Liabilities DerivativeLiabilities	21794000	USD
CY2020Q4	us-gaap	Derivative Collateral Right To Reclaim Securities DerivativeCollateralRightToReclaimSecurities	0	USD
CY2020Q4	us-gaap	Derivative Collateral Right To Reclaim Cash DerivativeCollateralRightToReclaimCash	21370000	USD
CY2021	us-gaap	Loans And Leases Receivable Commitments Variable Rates LoansAndLeasesReceivableCommitmentsVariableRates	2252895000	USD
CY2020	us-gaap	Loans And Leases Receivable Commitments Variable Rates LoansAndLeasesReceivableCommitmentsVariableRates	1994755000	USD
CY2020	us-gaap	Proceeds From Short Term Debt ProceedsFromShortTermDebt	10500000	USD
CY2020	us-gaap	Loans And Leases Receivable Commitments Fixed Rates LoansAndLeasesReceivableCommitmentsFixedRates	65319000	USD
CY2020Q4	us-gaap	Derivative Fair Value Of Derivative Liability Amount Not Offset Against Collateral DerivativeFairValueOfDerivativeLiabilityAmountNotOffsetAgainstCollateral	424000	USD
CY2021	us-gaap	Loans And Leases Receivable Commitments Fixed Rates LoansAndLeasesReceivableCommitmentsFixedRates	90100000	USD
CY2019	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	30928000	USD
CY2021	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	0	USD
CY2019	us-gaap	Proceeds From Short Term Debt ProceedsFromShortTermDebt	0	USD
CY2021	us-gaap	Net Income Loss NetIncomeLoss	95733000	USD
CY2020	us-gaap	Net Income Loss NetIncomeLoss	84337000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	87047000	USD
CY2021	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	25475994	shares
CY2020	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	25469242	shares
CY2019	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	25588404	shares
CY2021	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	3.76
CY2020	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	3.31
CY2019	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	3.40
CY2021	us-gaap	Net Income Loss NetIncomeLoss	95733000	USD
CY2020	us-gaap	Net Income Loss NetIncomeLoss	84337000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	87047000	USD
CY2021	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	25475994	shares
CY2020	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	25469242	shares
CY2019	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	25588404	shares
CY2021	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	144111	shares
CY2020	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	104699	shares
CY2019	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	170489	shares
CY2021	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	25620105	shares
CY2020	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	25573941	shares
CY2019	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	25758893	shares
CY2021	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	3.74
CY2020	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	3.30
CY2019	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	3.38
CY2019	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	0	shares
CY2020	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	0	shares
CY2021	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	0	shares
CY2021	us-gaap	Other Comprehensive Income Loss Before Reclassifications Net Of Tax OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax	-11203000	USD
CY2021	us-gaap	Reclassification From Accumulated Other Comprehensive Income Current Period Net Of Tax ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax	448000	USD
CY2021	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-11651000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Before Reclassifications Net Of Tax OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax	15839000	USD
CY2020	us-gaap	Reclassification From Accumulated Other Comprehensive Income Current Period Net Of Tax ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax	154000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	15685000	USD
CY2021Q4	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	48322000	USD
CY2021Q3	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	49295000	USD
CY2021Q2	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	47625000	USD
CY2021Q1	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	47977000	USD
CY2021Q4	us-gaap	Interest Expense InterestExpense	3315000	USD
CY2021Q3	us-gaap	Interest Expense InterestExpense	3554000	USD
CY2021Q2	us-gaap	Interest Expense InterestExpense	3964000	USD
CY2021Q1	us-gaap	Interest Expense InterestExpense	4298000	USD
CY2021Q4	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	45007000	USD
CY2021Q3	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	45741000	USD
CY2021Q2	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	43661000	USD
CY2021Q1	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	43679000	USD
CY2021Q4	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	0	USD
CY2021Q3	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	1300000	USD
CY2021Q2	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	-1700000	USD
CY2021Q1	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	1477000	USD
CY2021Q4	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	45007000	USD
CY2021Q3	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	44441000	USD
CY2021Q2	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	45361000	USD
CY2021Q1	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	42202000	USD
CY2021Q4	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	9709000	USD
CY2021Q3	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	11114000	USD
CY2021Q2	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	11340000	USD
CY2021Q1	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	12557000	USD
CY2021Q4	us-gaap	Noninterest Expense NoninterestExpense	24926000	USD
CY2021Q3	us-gaap	Noninterest Expense NoninterestExpense	25967000	USD
CY2021Q2	us-gaap	Noninterest Expense NoninterestExpense	26648000	USD
CY2021Q1	us-gaap	Noninterest Expense NoninterestExpense	26746000	USD
CY2021Q4	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	5507000	USD
CY2021Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	5469000	USD
CY2021Q2	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	5705000	USD
CY2021Q1	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	5030000	USD
CY2021Q4	us-gaap	Net Income Loss NetIncomeLoss	24283000	USD
CY2021Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.95
CY2021Q3	us-gaap	Net Income Loss NetIncomeLoss	24119000	USD
CY2021Q2	us-gaap	Net Income Loss NetIncomeLoss	24348000	USD
CY2021Q1	us-gaap	Net Income Loss NetIncomeLoss	22983000	USD
CY2021Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.95
CY2021Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.95
CY2021Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.96
CY2021Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.90
CY2021Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.95
CY2021Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.94
CY2021Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.90
CY2020Q4	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	49854000	USD
CY2020Q3	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	45979000	USD
CY2020Q2	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	46831000	USD
CY2020Q1	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	50439000	USD
CY2020Q4	us-gaap	Interest Expense InterestExpense	5141000	USD
CY2020Q3	us-gaap	Interest Expense InterestExpense	6066000	USD
CY2020Q2	us-gaap	Interest Expense InterestExpense	7303000	USD
CY2020Q1	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	6600000	USD
CY2020Q4	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	43793000	USD
CY2020Q4	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	11782000	USD
CY2020Q1	us-gaap	Interest Expense InterestExpense	11585000	USD
CY2020Q4	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	44713000	USD
CY2020Q3	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	39913000	USD
CY2020Q2	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	39528000	USD
CY2020Q1	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	38854000	USD
CY2020Q4	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	920000	USD
CY2020Q3	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	1750000	USD
CY2020Q2	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	5500000	USD
CY2020Q3	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	38163000	USD
CY2020Q2	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	34028000	USD
CY2020Q1	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	32254000	USD
CY2020Q3	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	13115000	USD
CY2020Q2	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	11169000	USD
CY2020Q3	us-gaap	Noninterest Expense NoninterestExpense	23125000	USD
CY2020Q4	us-gaap	Noninterest Expense NoninterestExpense	24912000	USD
CY2020Q1	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	10777000	USD
CY2020Q4	us-gaap	Net Income Loss NetIncomeLoss	24592000	USD
CY2020Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.97
CY2020Q2	us-gaap	Noninterest Expense NoninterestExpense	21079000	USD
CY2020Q1	us-gaap	Noninterest Expense NoninterestExpense	22089000	USD
CY2020Q4	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	6071000	USD
CY2020Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	5377000	USD
CY2020Q2	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	4448000	USD
CY2020Q1	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	3643000	USD
CY2020Q3	us-gaap	Net Income Loss NetIncomeLoss	22776000	USD
CY2020Q2	us-gaap	Net Income Loss NetIncomeLoss	19670000	USD
CY2020Q1	us-gaap	Net Income Loss NetIncomeLoss	17299000	USD
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
CY2009Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate	0.0302
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
CY2009Q4	lkfn	Adjustments In Share Capital Warrants Issue AdjustmentsInShareCapitalWarrantsIssue	198269	shares
CY2009Q1	lkfn	Warrant Period WarrantPeriod	P10Y
CY2020Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.67
CY2009Q1	lkfn	Issue Of Warrant Stock Purchase IssueOfWarrantStockPurchase	396538	shares
CY2009Q1	lkfn	Issue Of Warrants Aggregate Purchase Price Of Stock IssueOfWarrantsAggregatePurchasePriceOfStock	56044000	USD
CY2009Q1	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Expected Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1	P10Y
CY2009Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExercisePrice	21.20
CY2009Q1	us-gaap	Share Price SharePrice	17.45
CY2009Q1	lkfn	Warrant Exercise Price Per Share WarrantExercisePricePerShare	21.20
CY2018	lkfn	Shares Issuable Upon Exercise Of Warrants SharesIssuableUponExerciseOfWarrants	314846	shares
CY2018	lkfn	Warrant Exercise Price Per Share WarrantExercisePricePerShare	13.3503
CY2019Q1	us-gaap	Class Of Warrant Or Right Number Of Securities Called By Warrants Or Rights ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights	315961	shares
CY2019Q1	lkfn	Cost To Exercise Warrant CostToExerciseWarrant	4200000	USD
CY2019Q1	lkfn	Common Stock Issued On Warrants Exercises CommonStockIssuedOnWarrantsExercises	91894	USD
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	shares
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	640000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Five LesseeOperatingLeaseLiabilityPaymentsDueYearFive	617000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due After Year Five LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive	1616000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	606000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	622000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due Next Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths	595000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	4696000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	478000	USD
CY2021Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	4218000	USD
CY2021Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	4218000	USD
CY2021	us-gaap	Operating Lease Cost OperatingLeaseCost	536000	USD
CY2020	us-gaap	Operating Lease Cost OperatingLeaseCost	536000	USD
CY2019	us-gaap	Operating Lease Cost OperatingLeaseCost	498000	USD
CY2021	us-gaap	Short Term Lease Cost ShortTermLeaseCost	24000	USD
CY2020	us-gaap	Short Term Lease Cost ShortTermLeaseCost	24000	USD
CY2019	us-gaap	Short Term Lease Cost ShortTermLeaseCost	24000	USD
CY2021	us-gaap	Lease Cost LeaseCost	560000	USD
CY2020	us-gaap	Lease Cost LeaseCost	560000	USD
CY2019	us-gaap	Lease Cost LeaseCost	522000	USD
CY2021	us-gaap	Operating Lease Payments OperatingLeasePayments	536000	USD
CY2020	us-gaap	Operating Lease Payments OperatingLeasePayments	536000	USD
CY2019	us-gaap	Operating Lease Payments OperatingLeasePayments	498000	USD
CY2021Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P7Y10M24D
CY2020Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P8Y9M18D
CY2019Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P9Y9M18D
CY2021Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.028
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
CY2021	dei	Auditor Name AuditorName	Crowe LLP
CY2021	dei	Auditor Firm AuditorFirmId	173

Files In Submission

Name	View Source	Status
0000721994-22-000024-index-headers.html	Edgar Link	pending
0000721994-22-000024-index.html	Edgar Link	pending
0000721994-22-000024.txt	Edgar Link	pending
0000721994-22-000024-xbrl.zip	Edgar Link	pending
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FilingSummary.xml	Edgar Link	unprocessable
Financial_Report.xlsx	Edgar Link	pending
lkfn-20211231.htm	Edgar Link	pending
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lkfn-20211231_cal.xml	Edgar Link	unprocessable
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$LKFN
LAKELAND FINANCIAL CORP Stock $lkfn

2021 Q4 Form 10-K Financial Statement

#000072199422000024 Filed on February 23, 2022

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$LKFN LAKELAND FINANCIAL CORP Stock $lkfn

2021 Q4 Form 10-K Financial Statement

#000072199422000024 Filed on February 23, 2022

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$LKFN
LAKELAND FINANCIAL CORP Stock $lkfn