XML 54 R43.htm IDEA: XBRL DOCUMENT
v3.23.3

Schedule of Allowance for Credit Losses on Financing Receivables (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2023 | Sep. 30, 2022 | Sep. 30, 2023 | Sep. 30, 2022 | Dec. 31, 2022
Debt Securities, Held-to-Maturity, Allowance for Credit Loss [Line Items] |  |  |  |  |
Balance | $ 10,449 | $ 8,315 | $ 8,791 | $ 8,775 |
Charge-offs | (142) | (106) | (408) | (235) |
Recoveries | 663 | 149 | 814 | 318 |
Provision for credit losses |  | 500 | 250 |  |
Impact of adopting ASC 326 |  |  | 1,523 |  |
Balance | 10,970 | 8,858 | 10,970 | 8,858 |
Individually evaluated for loss |  |  |  |  | $ 654
Collectively evaluated for loss |  |  |  |  | 8,137
Total |  |  |  |  | 8,791
Individually evaluated for loss |  |  |  |  | 4,129
Collectively evaluated for loss |  |  |  |  | 846,061
Total | 937,426 |  | 937,426 |  | 850,190
One to Four Family Residential Real Estate Loans [Member] |  |  |  |  |
Debt Securities, Held-to-Maturity, Allowance for Credit Loss [Line Items] |  |  |  |  |
Balance | 1,852 | 580 | 655 | 623 |
Charge-offs |  |  |  |  |
Recoveries |  |  |  |  |
Provision for credit losses | 38 | 25 | 213 | (18) |
Impact of adopting ASC 326 |  |  | 1,022 |  |
Balance | 1,890 | 605 | 1,890 | 605 |
Individually evaluated for loss |  |  |  |  |
Collectively evaluated for loss |  |  |  |  | 655
Total |  |  |  |  | 655
Individually evaluated for loss |  |  |  |  | 326
Collectively evaluated for loss |  |  |  |  | 236,656
Total |  |  |  |  | 236,982
Construction And Land Loans [Member] |  |  |  |  |
Debt Securities, Held-to-Maturity, Allowance for Credit Loss [Line Items] |  |  |  |  |
Balance | 161 | 133 | 117 | 138 |
Charge-offs |  |  |  |  |
Recoveries | 626 | 65 | 626 | 165 |
Provision for credit losses | (641) | (92) | (646) | (197) |
Impact of adopting ASC 326 |  |  | 49 |  |
Balance | 146 | 106 | 146 | 106 |
Individually evaluated for loss |  |  |  |  |
Collectively evaluated for loss |  |  |  |  | 117
Total |  |  |  |  | 117
Individually evaluated for loss |  |  |  |  | 412
Collectively evaluated for loss |  |  |  |  | 22,313
Total | 21,657 |  | 21,657 |  | 22,725
Commercial Real Estate Loans [Member] |  |  |  |  |
Debt Securities, Held-to-Maturity, Allowance for Credit Loss [Line Items] |  |  |  |  |
Balance | 4,373 | 2,982 | 3,158 | 3,051 |
Charge-offs |  |  |  |  |
Recoveries |  |  |  |  |
Provision for credit losses | 81 | 216 | 233 | 147 |
Impact of adopting ASC 326 |  |  | 1,063 |  |
Balance | 4,454 | 3,198 | 4,454 | 3,198 |
Individually evaluated for loss |  |  |  |  |
Collectively evaluated for loss |  |  |  |  | 3,158
Total |  |  |  |  | 3,158
Individually evaluated for loss |  |  |  |  | 1,224
Collectively evaluated for loss |  |  |  |  | 302,850
Total | 323,427 |  | 323,427 |  | 304,074
Commercial Loan [Member] |  |  |  |  |
Debt Securities, Held-to-Maturity, Allowance for Credit Loss [Line Items] |  |  |  |  |
Balance | 2,710 | 2,651 | 2,753 | 2,613 |
Charge-offs | (44) |  | (151) |  |
Recoveries | 9 | 5 | 28 | 28 |
Provision for credit losses | 469 | 146 | 369 | 161 |
Impact of adopting ASC 326 |  |  | 145 |  |
Balance | 3,144 | 2,802 | 3,144 | 2,802 |
Individually evaluated for loss |  |  |  |  | 636
Collectively evaluated for loss |  |  |  |  | 2,117
Total |  |  |  |  | 2,753
Individually evaluated for loss |  |  |  |  | 812
Collectively evaluated for loss |  |  |  |  | 172,603
Total | 185,831 |  | 185,831 |  | 173,415
Paycheck Protection Program Loans [Member] |  |  |  |  |
Debt Securities, Held-to-Maturity, Allowance for Credit Loss [Line Items] |  |  |  |  |
Balance |  |  |  |  |
Charge-offs |  |  |  |  |
Recoveries |  |  |  |  |
Provision for credit losses |  |  |  |  |
Impact of adopting ASC 326 |  |  |  |  |
Balance |  |  |  |  |
Individually evaluated for loss |  |  |  |  |
Collectively evaluated for loss |  |  |  |  |
Total |  |  |  |  |
Individually evaluated for loss |  |  |  |  |
Collectively evaluated for loss |  |  |  |  | 21
Total |  |  |  |  | 21
Agriculture Loans [Member] |  |  |  |  |
Debt Securities, Held-to-Maturity, Allowance for Credit Loss [Line Items] |  |  |  |  |
Balance | 1,134 | 1,820 | 1,966 | 2,221 |
Charge-offs |  |  |  |  |
Recoveries | 1 | 56 | 74 | 59 |
Provision for credit losses | (45) | 130 | (126) | (274) |
Impact of adopting ASC 326 |  |  | (824) |  |
Balance | 1,090 | 2,006 | 1,090 | 2,006 |
Individually evaluated for loss |  |  |  |  | 18
Collectively evaluated for loss |  |  |  |  | 1,948
Total |  |  |  |  | 1,966
Individually evaluated for loss |  |  |  |  | 1,319
Collectively evaluated for loss |  |  |  |  | 82,964
Total | 84,560 |  | 84,560 |  | 84,283
Municipal Loans [Member] |  |  |  |  |
Debt Securities, Held-to-Maturity, Allowance for Credit Loss [Line Items] |  |  |  |  |
Balance | 16 | 6 | 5 | 6 |
Charge-offs |  |  |  |  |
Recoveries |  |  |  | 6 |
Provision for credit losses | (1) | (1) | (1) | (7) |
Impact of adopting ASC 326 |  |  | 11 |  |
Balance | 15 | 5 | 15 | 5 |
Individually evaluated for loss |  |  |  |  |
Collectively evaluated for loss |  |  |  |  | 5
Total |  |  |  |  | 5
Individually evaluated for loss |  |  |  |  | 36
Collectively evaluated for loss |  |  |  |  | 1,990
Total | 3,200 |  | 3,200 |  | 2,026
Consumer Loans [Member] |  |  |  |  |
Debt Securities, Held-to-Maturity, Allowance for Credit Loss [Line Items] |  |  |  |  |
Balance | 203 | 143 | 137 | 123 |
Charge-offs | (98) | (106) | (257) | (235) |
Recoveries | 27 | 23 | 86 | 60 |
Provision for credit losses | 99 | 76 | 208 | 188 |
Impact of adopting ASC 326 |  |  | 57 |  |
Balance | $ 231 | $ 136 | $ 231 | $ 136 |
Individually evaluated for loss |  |  |  |  |
Collectively evaluated for loss |  |  |  |  | 137
Total |  |  |  |  | 137
Individually evaluated for loss |  |  |  |  |
Collectively evaluated for loss |  |  |  |  | 26,664
Total |  |  |  |  | $ 26,664

X
- Definition Financing receivable allowance for credit losses impact. + References No definition available. + Details
Name: | LARK_FinancingReceivableAllowanceForCreditLossesImpact
Namespace Prefix: | LARK_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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 Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 13 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479319/326-20-50-13 + Details
Name: | us-gaap_DebtSecuritiesHeldtomaturityAllowanceForCreditLossLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of allowance for credit loss on financing receivable. Excludes allowance for financing receivable covered under loss sharing agreement. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(4)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name Regulation S-K (SK) -Number 229 -Section 1405 -Paragraph (a) -Subparagraph (1) -Publisher SEC Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Name Regulation S-K (SK) -Number 229 -Section 1405 -Paragraph (a) -Subparagraph (3) -Publisher SEC Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Name Regulation S-K (SK) -Number 229 -Section 1405 -Paragraph (c) -Publisher SEC Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479344/326-20-45-1 Reference 6: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 942 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(7)(2)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479853/942-210-S99-1 Reference 7: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 11B -Subparagraph (c)(1) -SubTopic 10 -Topic 310 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481962/310-10-50-11B Reference 8: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 13 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479319/326-20-50-13 Reference 9: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 13 -Subparagraph (f) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479319/326-20-50-13 + Details
Name: | us-gaap_FinancingReceivableAllowanceForCreditLosses
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The valuation allowance for financing receivables that are expected to be uncollectible that were collectively evaluated for impairment. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 11B -Subparagraph (g) -SubTopic 10 -Topic 310 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481962/310-10-50-11B + Details
Name: | us-gaap_FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of valuation allowance for financing receivables that are expected to be uncollectible that were individually evaluated for impairment. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 11B -Subparagraph (g) -SubTopic 10 -Topic 310 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481962/310-10-50-11B + Details
Name: | us-gaap_FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of increase in allowance for credit loss on financing receivable from recovery. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 79 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479294/326-20-55-79 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 13 -Subparagraph (e) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479319/326-20-50-13 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 11B -Subparagraph (c)(4) -SubTopic 10 -Topic 310 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481962/310-10-50-11B + Details
Name: | us-gaap_FinancingReceivableAllowanceForCreditLossesRecovery
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of writeoff of financing receivable, charged against allowance for credit loss. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 79 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479294/326-20-55-79 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479319/326-20-50-6 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 13 -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479319/326-20-50-13 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 11B -Subparagraph (c)(3) -SubTopic 10 -Topic 310 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481962/310-10-50-11B + Details
Name: | us-gaap_FinancingReceivableAllowanceForCreditLossesWriteOffs
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The balance of financing receivables that were collectively evaluated for impairment. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 4 -Subparagraph (SAB Topic 6.L(5)(a)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480418/310-10-S99-4 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 11C -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481962/310-10-50-11C + Details
Name: | us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairment
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The balance of financing receivables that were individually evaluated for impairment. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 11C -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481962/310-10-50-11C Reference 2: http://www.xbrl.org/2003/role/exampleRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 4 -Subparagraph (SAB Topic 6.L(5)(a)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480418/310-10-S99-4 + Details
Name: | us-gaap_FinancingReceivableIndividuallyEvaluatedForImpairment
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of allowance to cover probable credit losses on loans and leases. Includes carryover of or adjustments to the allowance for loan losses in connection with business combinations. Excludes allowance for loans and leases covered under loss sharing agreements. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 310 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (b)(1)(ii) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481696/310-30-50-2 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 11B -Subparagraph (c)(1) -SubTopic 10 -Topic 310 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481962/310-10-50-11B Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 11B -Subparagraph (g) -SubTopic 10 -Topic 310 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481962/310-10-50-11B Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef -Name Accounting Standards Codification -Section S99 -Paragraph 4 -Subparagraph (SAB Topic 6.L.1) -SubTopic 10 -Topic 310 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480418/310-10-S99-4 + Details
Name: | us-gaap_LoansAndLeasesReceivableAllowance
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
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 -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481990/310-10-45-2 + Details
Name: | us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of expense related loan transactions, lease transactions, credit loss from transactions other than loan and lease transactions, and other loss based on assessment of uncollectability from the counterparty to reduce the account to their net realizable value. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 45 -Paragraph 28 -Subparagraph (a) -SubTopic 10 -Topic 230 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482740/230-10-45-28 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 11B -Subparagraph (c)(2) -SubTopic 10 -Topic 310 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481962/310-10-50-11B Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 942 -SubTopic 220 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04.11) -Publisher FASB -URI https://asc.fasb.org//1943274/2147483589/942-220-S99-1 + Details
Name: | us-gaap_ProvisionForLoanLeaseAndOtherLosses
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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_PaycheckProtectionProgramLoansMember
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: |