XML 114 R98.htm IDEA: XBRL DOCUMENT v3.20.4

PENSION AND OTHER POSTRETIREMENT PLANS (Schedule of Fair Values of Pension Plan and Postretirement Plan Assets by Asset Category) (Details) - USD ($)	Dec. 31, 2020	Dec. 31, 2019
Pension Benefits
Defined Benefit Plan Disclosure
Defined Benefit Plan, Assets for Plan Benefits	$ 2,346,000	$ 2,470,000
SERP Benefits
Defined Benefit Plan Disclosure
Defined Benefit Plan, Assets for Plan Benefits	878,000	913,000
Level 1 | Pension Benefits
Defined Benefit Plan Disclosure
Defined Benefit Plan, Assets for Plan Benefits	2,346,000	2,470,000
Level 1 | SERP Benefits
Defined Benefit Plan Disclosure
Defined Benefit Plan, Assets for Plan Benefits	878,000	913,000
Level 2 | Pension Benefits
Defined Benefit Plan Disclosure
Defined Benefit Plan, Assets for Plan Benefits	0	0
Level 2 | SERP Benefits
Defined Benefit Plan Disclosure
Defined Benefit Plan, Assets for Plan Benefits	0	0
Level 3 | Pension Benefits
Defined Benefit Plan Disclosure
Defined Benefit Plan, Assets for Plan Benefits	0	0
Level 3 | SERP Benefits
Defined Benefit Plan Disclosure
Defined Benefit Plan, Assets for Plan Benefits	0	0
Accrued Interest and Dividend Income | Pension Benefits
Defined Benefit Plan Disclosure
Defined Benefit Plan, Assets for Plan Benefits	3,000	2,000
Accrued Interest and Dividend Income | SERP Benefits
Defined Benefit Plan Disclosure
Defined Benefit Plan, Assets for Plan Benefits	1,000	1,000
Equity securities - US mid cap stock mutual funds [Member] | Pension Benefits
Defined Benefit Plan Disclosure
Defined Benefit Plan, Assets for Plan Benefits	124,000	115,000
Equity securities - US mid cap stock mutual funds [Member] | SERP Benefits
Defined Benefit Plan Disclosure
Defined Benefit Plan, Assets for Plan Benefits	23,000	46,000
Equity securities - US mid cap stock mutual funds [Member] | Level 1 | Pension Benefits
Defined Benefit Plan Disclosure
Defined Benefit Plan, Assets for Plan Benefits	124,000	115,000
Equity securities - US mid cap stock mutual funds [Member] | Level 1 | SERP Benefits
Defined Benefit Plan Disclosure
Defined Benefit Plan, Assets for Plan Benefits	23,000	46,000
Equity securities - US mid cap stock mutual funds [Member] | Level 2 | Pension Benefits
Defined Benefit Plan Disclosure
Defined Benefit Plan, Assets for Plan Benefits	0	0
Equity securities - US mid cap stock mutual funds [Member] | Level 2 | SERP Benefits
Defined Benefit Plan Disclosure
Defined Benefit Plan, Assets for Plan Benefits	0	0
Equity securities - US mid cap stock mutual funds [Member] | Level 3 | Pension Benefits
Defined Benefit Plan Disclosure
Defined Benefit Plan, Assets for Plan Benefits	0	0
Equity securities - US mid cap stock mutual funds [Member] | Level 3 | SERP Benefits
Defined Benefit Plan Disclosure
Defined Benefit Plan, Assets for Plan Benefits	0	0
Equity securities - US large cap common stocks [Member] | Pension Benefits
Defined Benefit Plan Disclosure
Defined Benefit Plan, Assets for Plan Benefits	962,000	912,000
Equity securities - US large cap common stocks [Member] | SERP Benefits
Defined Benefit Plan Disclosure
Defined Benefit Plan, Assets for Plan Benefits	360,000	353,000
Equity securities - US large cap common stocks [Member] | Level 1 | Pension Benefits
Defined Benefit Plan Disclosure
Defined Benefit Plan, Assets for Plan Benefits	962,000	912,000
Equity securities - US large cap common stocks [Member] | Level 1 | SERP Benefits
Defined Benefit Plan Disclosure
Defined Benefit Plan, Assets for Plan Benefits	360,000	353,000
Equity securities - US large cap common stocks [Member] | Level 2 | Pension Benefits
Defined Benefit Plan Disclosure
Defined Benefit Plan, Assets for Plan Benefits	0	0
Equity securities - US large cap common stocks [Member] | Level 2 | SERP Benefits
Defined Benefit Plan Disclosure
Defined Benefit Plan, Assets for Plan Benefits	0	0
Equity securities - US large cap common stocks [Member] | Level 3 | Pension Benefits
Defined Benefit Plan Disclosure
Defined Benefit Plan, Assets for Plan Benefits	0	0
Equity securities - US large cap common stocks [Member] | Level 3 | SERP Benefits
Defined Benefit Plan Disclosure
Defined Benefit Plan, Assets for Plan Benefits	0	0
Cash - money market account [Member] | Pension Benefits
Defined Benefit Plan Disclosure
Defined Benefit Plan, Assets for Plan Benefits	93,000	74,000
Cash - money market account [Member] | SERP Benefits
Defined Benefit Plan Disclosure
Defined Benefit Plan, Assets for Plan Benefits	16,000	13,000
Cash - money market account [Member] | Level 1 | Pension Benefits
Defined Benefit Plan Disclosure
Defined Benefit Plan, Assets for Plan Benefits	93,000	74,000
Cash - money market account [Member] | Level 1 | SERP Benefits
Defined Benefit Plan Disclosure
Defined Benefit Plan, Assets for Plan Benefits	16,000	13,000
Cash - money market account [Member] | Level 2 | Pension Benefits
Defined Benefit Plan Disclosure
Defined Benefit Plan, Assets for Plan Benefits	0	0
Cash - money market account [Member] | Level 2 | SERP Benefits
Defined Benefit Plan Disclosure
Defined Benefit Plan, Assets for Plan Benefits	0	0
Cash - money market account [Member] | Level 3 | Pension Benefits
Defined Benefit Plan Disclosure
Defined Benefit Plan, Assets for Plan Benefits	0	0
Cash - money market account [Member] | Level 3 | SERP Benefits
Defined Benefit Plan Disclosure
Defined Benefit Plan, Assets for Plan Benefits	0	0
Debt securities - short term bond mutual funds [Member] | Pension Benefits
Defined Benefit Plan Disclosure
Defined Benefit Plan, Assets for Plan Benefits	205,000	480,000
Debt securities - short term bond mutual funds [Member] | SERP Benefits
Defined Benefit Plan Disclosure
Defined Benefit Plan, Assets for Plan Benefits	82,000	155,000
Debt securities - short term bond mutual funds [Member] | Level 1 | Pension Benefits
Defined Benefit Plan Disclosure
Defined Benefit Plan, Assets for Plan Benefits	205,000	480,000
Debt securities - short term bond mutual funds [Member] | Level 1 | SERP Benefits
Defined Benefit Plan Disclosure
Defined Benefit Plan, Assets for Plan Benefits	82,000	155,000
Debt securities - short term bond mutual funds [Member] | Level 2 | Pension Benefits
Defined Benefit Plan Disclosure
Defined Benefit Plan, Assets for Plan Benefits	0	0
Debt securities - short term bond mutual funds [Member] | Level 2 | SERP Benefits
Defined Benefit Plan Disclosure
Defined Benefit Plan, Assets for Plan Benefits	0	0
Debt securities - short term bond mutual funds [Member] | Level 3 | Pension Benefits
Defined Benefit Plan Disclosure
Defined Benefit Plan, Assets for Plan Benefits	0	0
Debt securities - short term bond mutual funds [Member] | Level 3 | SERP Benefits
Defined Benefit Plan Disclosure
Defined Benefit Plan, Assets for Plan Benefits	0	0
Debt securities - intermediate term bond mutual funds [Member] | Pension Benefits
Defined Benefit Plan Disclosure
Defined Benefit Plan, Assets for Plan Benefits	526,000	402,000
Debt securities - intermediate term bond mutual funds [Member] | SERP Benefits
Defined Benefit Plan Disclosure
Defined Benefit Plan, Assets for Plan Benefits	216,000	156,000
Debt securities - intermediate term bond mutual funds [Member] | Level 1 | Pension Benefits
Defined Benefit Plan Disclosure
Defined Benefit Plan, Assets for Plan Benefits	526,000	402,000
Debt securities - intermediate term bond mutual funds [Member] | Level 1 | SERP Benefits
Defined Benefit Plan Disclosure
Defined Benefit Plan, Assets for Plan Benefits	216,000	156,000
Debt securities - intermediate term bond mutual funds [Member] | Level 2 | Pension Benefits
Defined Benefit Plan Disclosure
Defined Benefit Plan, Assets for Plan Benefits	0	0
Debt securities - intermediate term bond mutual funds [Member] | Level 2 | SERP Benefits
Defined Benefit Plan Disclosure
Defined Benefit Plan, Assets for Plan Benefits	0	0
Debt securities - intermediate term bond mutual funds [Member] | Level 3 | Pension Benefits
Defined Benefit Plan Disclosure
Defined Benefit Plan, Assets for Plan Benefits	0	0
Debt securities - intermediate term bond mutual funds [Member] | Level 3 | SERP Benefits
Defined Benefit Plan Disclosure
Defined Benefit Plan, Assets for Plan Benefits	0	0
Equity Securities - emerging markets stock mutual funds [Member] | Pension Benefits
Defined Benefit Plan Disclosure
Defined Benefit Plan, Assets for Plan Benefits	105,000	111,000
Equity Securities - emerging markets stock mutual funds [Member] | SERP Benefits
Defined Benefit Plan Disclosure
Defined Benefit Plan, Assets for Plan Benefits	37,000	43,000
Equity Securities - emerging markets stock mutual funds [Member] | Level 1 | Pension Benefits
Defined Benefit Plan Disclosure
Defined Benefit Plan, Assets for Plan Benefits	105,000	111,000
Equity Securities - emerging markets stock mutual funds [Member] | Level 1 | SERP Benefits
Defined Benefit Plan Disclosure
Defined Benefit Plan, Assets for Plan Benefits	37,000	43,000
Equity Securities - emerging markets stock mutual funds [Member] | Level 2 | Pension Benefits
Defined Benefit Plan Disclosure
Defined Benefit Plan, Assets for Plan Benefits	0	0
Equity Securities - emerging markets stock mutual funds [Member] | Level 2 | SERP Benefits
Defined Benefit Plan Disclosure
Defined Benefit Plan, Assets for Plan Benefits	0	0
Equity Securities - emerging markets stock mutual funds [Member] | Level 3 | Pension Benefits
Defined Benefit Plan Disclosure
Defined Benefit Plan, Assets for Plan Benefits	0	0
Equity Securities - emerging markets stock mutual funds [Member] | Level 3 | SERP Benefits
Defined Benefit Plan Disclosure
Defined Benefit Plan, Assets for Plan Benefits	0	0
Equity securities - international stock mutual funds [Member] | Pension Benefits
Defined Benefit Plan Disclosure
Defined Benefit Plan, Assets for Plan Benefits	202,000	257,000
Equity securities - international stock mutual funds [Member] | SERP Benefits
Defined Benefit Plan Disclosure
Defined Benefit Plan, Assets for Plan Benefits	72,000	100,000
Equity securities - international stock mutual funds [Member] | Level 1 | Pension Benefits
Defined Benefit Plan Disclosure
Defined Benefit Plan, Assets for Plan Benefits	202,000	257,000
Equity securities - international stock mutual funds [Member] | Level 1 | SERP Benefits
Defined Benefit Plan Disclosure
Defined Benefit Plan, Assets for Plan Benefits	72,000	100,000
Equity securities - international stock mutual funds [Member] | Level 2 | Pension Benefits
Defined Benefit Plan Disclosure
Defined Benefit Plan, Assets for Plan Benefits	0	0
Equity securities - international stock mutual funds [Member] | Level 2 | SERP Benefits
Defined Benefit Plan Disclosure
Defined Benefit Plan, Assets for Plan Benefits	0	0
Equity securities - international stock mutual funds [Member] | Level 3 | Pension Benefits
Defined Benefit Plan Disclosure
Defined Benefit Plan, Assets for Plan Benefits	0	0
Equity securities - international stock mutual funds [Member] | Level 3 | SERP Benefits
Defined Benefit Plan Disclosure
Defined Benefit Plan, Assets for Plan Benefits	0	0
Equity securities - US small cap stock mutual funds [Member] | Pension Benefits
Defined Benefit Plan Disclosure
Defined Benefit Plan, Assets for Plan Benefits	129,000	119,000
Equity securities - US small cap stock mutual funds [Member] | SERP Benefits
Defined Benefit Plan Disclosure
Defined Benefit Plan, Assets for Plan Benefits	72,000	47,000
Equity securities - US small cap stock mutual funds [Member] | Level 1 | Pension Benefits
Defined Benefit Plan Disclosure
Defined Benefit Plan, Assets for Plan Benefits	129,000	119,000
Equity securities - US small cap stock mutual funds [Member] | Level 1 | SERP Benefits
Defined Benefit Plan Disclosure
Defined Benefit Plan, Assets for Plan Benefits	72,000	47,000
Equity securities - US small cap stock mutual funds [Member] | Level 2 | Pension Benefits
Defined Benefit Plan Disclosure
Defined Benefit Plan, Assets for Plan Benefits	0	0
Equity securities - US small cap stock mutual funds [Member] | Level 2 | SERP Benefits
Defined Benefit Plan Disclosure
Defined Benefit Plan, Assets for Plan Benefits	0	0
Equity securities - US small cap stock mutual funds [Member] | Level 3 | Pension Benefits
Defined Benefit Plan Disclosure
Defined Benefit Plan, Assets for Plan Benefits	0	0
Equity securities - US small cap stock mutual funds [Member] | Level 3 | SERP Benefits
Defined Benefit Plan Disclosure
Defined Benefit Plan, Assets for Plan Benefits	$ 0	$ 0

X

- Definition

Amount of asset, recognized in statement of financial position, for overfunded defined benefit pension and other postretirement plans.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920

Reference 2: http://www.xbrl.org/2003/role/exampleRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 55
-Paragraph 17
-URI http://asc.fasb.org/extlink&oid=118257860&loc=d3e4179-114921

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=109237824&loc=d3e1703-114919

Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(17))
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(10))
-URI http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 45
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=109237824&loc=d3e1731-114919

Reference 7: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(10))
-URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878

+ Details

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

X

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

Name:	us-gaap_DefinedBenefitPlanDisclosureLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	us-gaap_RetirementPlanTypeAxis=us-gaap_PensionPlansDefinedBenefitMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_RetirementPlanTypeAxis=us-gaap_SupplementalEmployeeRetirementPlanDefinedBenefitMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel1Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel2Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel3Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	lkfn_DefinedBenefitPlanAssetsAxis=lkfn_AccruedInterestAndDividendIncomeMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	lkfn_DefinedBenefitPlanAssetsAxis=lkfn_EquitySecuritiesUsMidCapStockMutualFundsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	lkfn_DefinedBenefitPlanAssetsAxis=lkfn_EquitySecuritiesUsLargeCapCommonStocksMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	lkfn_DefinedBenefitPlanAssetsAxis=lkfn_CashMoneyMarketAccountMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	lkfn_DefinedBenefitPlanAssetsAxis=lkfn_DebtSecuritiesShortTermBondMutualFundsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	lkfn_DefinedBenefitPlanAssetsAxis=lkfn_DebtSecuritiesIntermediateTermBondMutualFundsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	lkfn_DefinedBenefitPlanAssetsAxis=lkfn_EquitySecuritiesEmergingMarketsStockMutualFundsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	lkfn_DefinedBenefitPlanAssetsAxis=lkfn_EquitySecuritiesInternationalStockMutualFundsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	lkfn_DefinedBenefitPlanAssetsAxis=lkfn_EquitySecuritiesUsSmallCapStockMutualFundsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: