XML 47 R37.htm IDEA: XBRL DOCUMENT
v3.22.1

Schedule of Impaired Financing Receivables (Details) - USD ($) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2022 | Dec. 31, 2021
Debt Securities, Held-to-Maturity, Allowance for Credit Loss [Line Items] |  |
Impaired Financing Receivable, Unpaid Principal Balance | $ 6,023,000 | $ 8,844,000
Impaired Financing Receivable, Recorded Investment | 5,670,000 | 6,718,000
Impaired Financing Receivable, with No Related Allowance, Recorded Investment | 4,857,000 | 6,209,000
Impaired Financing Receivable, with Related Allowance, Recorded Investment | 813,000 | 509,000
Impaired Financing Receivable, Related Allowance | 543,000 | 504,000
Year-to-date average loan balance | 5,728,000 | 7,425,000
Year-to-date interest income recognized | 35,000 | 167,000
One to four family residential real estate loans [Member] |  |
Debt Securities, Held-to-Maturity, Allowance for Credit Loss [Line Items] |  |
Impaired Financing Receivable, Unpaid Principal Balance | 580,000 | 578,000
Impaired Financing Receivable, Recorded Investment | 580,000 | 578,000
Impaired Financing Receivable, with No Related Allowance, Recorded Investment | 580,000 | 578,000
Impaired Financing Receivable, with Related Allowance, Recorded Investment |  |
Impaired Financing Receivable, Related Allowance |  |
Year-to-date average loan balance | 581,000 | 590,000
Year-to-date interest income recognized | 2,000 | 8,000
Construction and Land Loans [Member] |  |
Debt Securities, Held-to-Maturity, Allowance for Credit Loss [Line Items] |  |
Impaired Financing Receivable, Unpaid Principal Balance | 195,000 | 2,401,000
Impaired Financing Receivable, Recorded Investment | 195,000 | 794,000
Impaired Financing Receivable, with No Related Allowance, Recorded Investment | 195,000 | 794,000
Impaired Financing Receivable, with Related Allowance, Recorded Investment |  |
Impaired Financing Receivable, Related Allowance |  |
Year-to-date average loan balance | 195,000 | 895,000
Year-to-date interest income recognized | 2,000 | 16,000
Commercial Real Estate Loans [Member] |  |
Debt Securities, Held-to-Maturity, Allowance for Credit Loss [Line Items] |  |
Impaired Financing Receivable, Unpaid Principal Balance | 2,194,000 | 2,214,000
Impaired Financing Receivable, Recorded Investment | 2,194,000 | 2,214,000
Impaired Financing Receivable, with No Related Allowance, Recorded Investment | 2,194,000 | 2,214,000
Impaired Financing Receivable, with Related Allowance, Recorded Investment |  |
Impaired Financing Receivable, Related Allowance |  |
Year-to-date average loan balance | 2,204,000 | 2,388,000
Year-to-date interest income recognized | 12,000 | 37,000
Commercial Loan [Member] |  |
Debt Securities, Held-to-Maturity, Allowance for Credit Loss [Line Items] |  |
Impaired Financing Receivable, Unpaid Principal Balance | 1,178,000 | 1,380,000
Impaired Financing Receivable, Recorded Investment | 927,000 | 1,029,000
Impaired Financing Receivable, with No Related Allowance, Recorded Investment | 434,000 | 520,000
Impaired Financing Receivable, with Related Allowance, Recorded Investment | 493,000 | 509,000
Impaired Financing Receivable, Related Allowance | 492,000 | 504,000
Year-to-date average loan balance | 955,000 | 1,096,000
Year-to-date interest income recognized | 4,000 | 38,000
Agriculture Loans [Member] |  |
Debt Securities, Held-to-Maturity, Allowance for Credit Loss [Line Items] |  |
Impaired Financing Receivable, Unpaid Principal Balance | 1,840,000 | 2,235,000
Impaired Financing Receivable, Recorded Investment | 1,738,000 | 2,067,000
Impaired Financing Receivable, with No Related Allowance, Recorded Investment | 1,418,000 | 2,067,000
Impaired Financing Receivable, with Related Allowance, Recorded Investment | 320,000 |
Impaired Financing Receivable, Related Allowance | 51,000 |
Year-to-date average loan balance | 1,757,000 | 2,420,000
Year-to-date interest income recognized | 15,000 | 67,000
Municipal Loans [Member] |  |
Debt Securities, Held-to-Maturity, Allowance for Credit Loss [Line Items] |  |
Impaired Financing Receivable, Unpaid Principal Balance | 36,000 | 36,000
Impaired Financing Receivable, Recorded Investment | 36,000 | 36,000
Impaired Financing Receivable, with No Related Allowance, Recorded Investment | 36,000 | 36,000
Impaired Financing Receivable, with Related Allowance, Recorded Investment |  |
Impaired Financing Receivable, Related Allowance |  |
Year-to-date average loan balance | 36,000 | 36,000
Year-to-date interest income recognized |  | $ 1,000

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

X
- Definition Average amount of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c)(1) -URI https://asc.fasb.org/extlink&oid=123577603&loc=d3e5212-111524 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 17 -URI https://asc.fasb.org/extlink&oid=123577603&loc=d3e5258-111524 + Details
Name: | us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of interest income recognized that the financing receivables (with related allowance for credit losses and without a related allowance for credit losses) were impaired. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c)(2) -URI https://asc.fasb.org/extlink&oid=123577603&loc=d3e5212-111524 + Details
Name: | us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethod
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 14A -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=123577603&loc=SL6953550-111524 + Details
Name: | us-gaap_ImpairedFinancingReceivableRecordedInvestment
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of allowance for credit losses related to recorded investment. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (a)(3) -URI https://asc.fasb.org/extlink&oid=123577603&loc=d3e5212-111524 + Details
Name: | us-gaap_ImpairedFinancingReceivableRelatedAllowance
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of unpaid principal balance of impaired financing receivables with related allowance for credit losses and without related allowance for credit losses. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (a)(4) -URI https://asc.fasb.org/extlink&oid=123577603&loc=d3e5212-111524 + Details
Name: | us-gaap_ImpairedFinancingReceivableUnpaidPrincipalBalance
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of investment in impaired financing receivables for which there is no related allowance for credit losses. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 14A -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=123577603&loc=SL6953550-111524 + Details
Name: | us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of investment in impaired financing receivables for which there is a related allowance for credit losses. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 14A -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=123577603&loc=SL6953550-111524 + Details
Name: | us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=LARK_OneToFourFamilyResidentialRealEstateLoansMember
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_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_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: |