XML 53 R42.htm IDEA: XBRL DOCUMENT v3.22.2.2

Schedule of Troubled Debt Restructurings on Financing Receivables (Details) Number in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2022 USD ($) Number	Dec. 31, 2021 USD ($) Number
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	$ 711,307,000	$ 662,388,000
Financing receivable, modifications, recorded investment, accruing balance	479,000
Non-Accrual Balance [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, modifications, recorded investment, accruing balance	1,452,000	1,938,000
Accrual Balance [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, modifications, recorded investment, accruing balance	885,000
One To Four Family Residential Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	205,466,000	166,081,000
Construction and Land Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	$ 18,119,000	$ 27,644,000
Troubled debt restructurings, Number of loans | Number	1	3
Construction and Land Loans [Member] | Non-Accrual Balance [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, modifications, recorded investment, accruing balance		$ 681,000
Construction and Land Loans [Member] | Accrual Balance [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, modifications, recorded investment, accruing balance		113,000
Construction and Land Loans [Member] | Non Accrual Basis [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, modifications, recorded investment, accruing balance	195,000
Agriculture Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	86,114,000	94,267,000
Municipal Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	$ 2,036,000	$ 2,050,000
Troubled debt restructurings, Number of loans | Number	1	1
Municipal Loans [Member] | Non-Accrual Balance [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, modifications, recorded investment, accruing balance
Municipal Loans [Member] | Accrual Balance [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, modifications, recorded investment, accruing balance	36,000	36,000
Consumer loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	25,911,000	24,541,000
One to four family residential real estate loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	$ 205,466,000	$ 166,081,000
Troubled debt restructurings, Number of loans | Number	2	2
One to four family residential real estate loans [Member] | Non-Accrual Balance [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, modifications, recorded investment, accruing balance
One to four family residential real estate loans [Member] | Accrual Balance [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, modifications, recorded investment, accruing balance	157,000	161,000
Commercial Real Estate Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	$ 228,669,000	$ 198,472,000
Troubled debt restructurings, Number of loans | Number	2	2
Commercial Real Estate Loans [Member] | Non-Accrual Balance [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, modifications, recorded investment, accruing balance	$ 1,224,000	$ 1,224,000
Commercial Real Estate Loans [Member] | Accrual Balance [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, modifications, recorded investment, accruing balance
Commercial Loan [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	$ 144,582,000	$ 132,154,000
Troubled debt restructurings, Number of loans | Number	2	4
Commercial Loan [Member] | Non-Accrual Balance [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, modifications, recorded investment, accruing balance	$ 33,000	$ 33,000
Commercial Loan [Member] | Accrual Balance [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, modifications, recorded investment, accruing balance	$ 245,000	$ 436,000
Agriculture Loan [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled debt restructurings, Number of loans | Number	3	4
Agriculture Loan [Member] | Non-Accrual Balance [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, modifications, recorded investment, accruing balance
Agriculture Loan [Member] | Accrual Balance [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, modifications, recorded investment, accruing balance	$ 447,000	$ 742,000
Troubled Debt Restructurings [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled debt restructurings, Number of loans | Number	11	16
Troubled Debt Restructurings [Member] | Accrual Balance [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, modifications, recorded investment, accruing balance		$ 1,488,000
Loans Receivables Non Classified [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	$ 695,141,000	644,346,000
Loans Receivables Non Classified [Member] | One To Four Family Residential Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	205,122,000	165,299,000
Loans Receivables Non Classified [Member] | Construction and Land Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	17,924,000	26,963,000
Loans Receivables Non Classified [Member] | Commercial Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	223,334,000	193,669,000
Loans Receivables Non Classified [Member] | Commercial Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	135,739,000	123,609,000
Loans Receivables Non Classified [Member] | Paycheck Protection Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	410,000	17,179,000
Loans Receivables Non Classified [Member] | Agriculture Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	84,684,000	91,036,000
Loans Receivables Non Classified [Member] | Municipal Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	2,036,000	2,050,000
Loans Receivables Non Classified [Member] | Consumer loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	25,892,000	24,541,000
Loans Receivables Classified [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	16,166,000	18,042,000
Loans Receivables Classified [Member] | One To Four Family Residential Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	344,000	782,000
Loans Receivables Classified [Member] | Construction and Land Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	195,000	681,000
Loans Receivables Classified [Member] | Commercial Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	5,335,000	4,803,000
Loans Receivables Classified [Member] | Commercial Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	8,843,000	8,545,000
Loans Receivables Classified [Member] | Paycheck Protection Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total
Loans Receivables Classified [Member] | Agriculture Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	1,430,000	3,231,000
Loans Receivables Classified [Member] | Municipal Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total
Loans Receivables Classified [Member] | Consumer loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	$ 19,000

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

X

- Definition

Number of financing receivables that have been modified by troubled debt restructurings.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 33
-URI https://asc.fasb.org/extlink&oid=123577603&loc=SL6953676-111524

+ Details

Name:	us-gaap_FinancingReceivableModificationsNumberOfContracts2
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Amount of financing receivable modified as troubled debt restructuring.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 33
-URI https://asc.fasb.org/extlink&oid=123577603&loc=SL6953676-111524

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 40
-Section 50
-Paragraph 4
-URI https://asc.fasb.org/extlink&oid=121585226&loc=d3e18845-111554

+ Details

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

X

- Definition

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

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 45
-Paragraph 2
-URI https://asc.fasb.org/extlink&oid=124259787&loc=d3e4428-111522

+ Details

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

X

- Details

Name:	us-gaap_LoanRestructuringModificationAxis=LARK_NonAccrualBalanceMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_LoanRestructuringModificationAxis=LARK_AccrualBalanceMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FinancialInstrumentAxis=LARK_OneToFourFamilyResidentialRealEstateMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FinancialInstrumentAxis=LARK_ConstructionAndLandLoansMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_LoanRestructuringModificationAxis=LARK_NonAccrualBasisMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FinancialInstrumentAxis=LARK_AgricultureLoansMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FinancialInstrumentAxis=LARK_MunicipalLoansMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FinancialInstrumentAxis=LARK_ConsumerLoansMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FinancialInstrumentAxis=LARK_OneToFourFamilyResidentialRealEstateLoansMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FinancialInstrumentAxis=LARK_CommercialRealEstateLoansMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FinancialInstrumentAxis=us-gaap_CommercialLoanMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FinancialInstrumentAxis=LARK_AgricultureLoanMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FinancialInstrumentAxis=LARK_TroubledDebtRestructuringsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis=LARK_LoansReceivablesNonClassifiedMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FinancialInstrumentAxis=us-gaap_CommercialRealEstateMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FinancialInstrumentAxis=LARK_CommercialLoansMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FinancialInstrumentAxis=LARK_PaycheckProtectionLoansMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis=LARK_LoansReceivablesClassifiedMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: