XML 54 R43.htm IDEA: XBRL DOCUMENT
v3.25.2

Schedule of Troubled Debt Restructurings on Financings Receivables and Year of Origination (Details) - USD ($) $ in Thousands | Jun. 30, 2025 | Dec. 31, 2024
--- | --- | ---
Short-Term Debt [Line Items] |  |
Nonclassified | $ 1,082,795 | $ 1,026,274
Classified | 34,989 | 26,079
Total | 1,117,784 | 1,052,353
Gross charge-offs | 211 | 659
One to Four Family Residential Real Estate [Member] |  |
Short-Term Debt [Line Items] |  |
Nonclassified | 377,051 | 352,175
Classified | 82 | 34
Total | 377,133 | 352,209
Gross charge-offs |  |
Construction and Land Loans [Member] |  |
Short-Term Debt [Line Items] |  |
Nonclassified | 26,373 | 25,328
Classified |  |
Total | 26,373 | 25,328
Gross charge-offs |  |
Commercial Real Estate [Member] |  |
Short-Term Debt [Line Items] |  |
Nonclassified | 363,774 | 342,578
Classified | 6,681 | 2,581
Total | 370,455 | 345,159
Gross charge-offs |  |
Commercial Loans [Member] |  |
Short-Term Debt [Line Items] |  |
Nonclassified | 181,630 | 170,178
Classified | 22,673 | 22,147
Total | 204,303 | 192,325
Gross charge-offs | 19 | 186
Agriculture Loans [Member] |  |
Short-Term Debt [Line Items] |  |
Nonclassified | 94,795 | 99,245
Classified | 5,553 | 1,317
Total | 100,348 | 100,562
Gross charge-offs |  | 64
Municipal Loans [Member] |  |
Short-Term Debt [Line Items] |  |
Nonclassified | 6,938 | 7,091
Classified |  |
Total | 6,938 | 7,091
Gross charge-offs |  |
Consumer Loans [Member] |  |
Short-Term Debt [Line Items] |  |
Nonclassified | 32,234 | 29,679
Classified |  |
Total | 32,234 | 29,679
Gross charge-offs | 192 | 409
2025 [Member] |  |
Short-Term Debt [Line Items] |  |
Nonclassified | 125,603 |
Classified | 2,086 |
Total | 127,689 |
Gross charge-offs | 192 |
2025 [Member] | One to Four Family Residential Real Estate [Member] |  |
Short-Term Debt [Line Items] |  |
Nonclassified | 48,832 |
Classified |  |
Total | 48,832 |
Gross charge-offs |  |
2025 [Member] | Construction and Land Loans [Member] |  |
Short-Term Debt [Line Items] |  |
Nonclassified | 4,242 |
Classified |  |
Total | 4,242 |
Gross charge-offs |  |
2025 [Member] | Commercial Real Estate [Member] |  |
Short-Term Debt [Line Items] |  |
Nonclassified | 36,975 |
Classified |  |
Total | 36,975 |
Gross charge-offs |  |
2025 [Member] | Commercial Loans [Member] |  |
Short-Term Debt [Line Items] |  |
Nonclassified | 23,368 |
Classified | 2,086 |
Total | 25,454 |
Gross charge-offs |  |
2025 [Member] | Agriculture Loans [Member] |  |
Short-Term Debt [Line Items] |  |
Nonclassified | 7,409 |
Classified |  |
Total | 7,409 |
Gross charge-offs |  |
2025 [Member] | Municipal Loans [Member] |  |
Short-Term Debt [Line Items] |  |
Nonclassified |  |
Classified |  |
Total |  |
Gross charge-offs |  |
2025 [Member] | Consumer Loans [Member] |  |
Short-Term Debt [Line Items] |  |
Nonclassified | 4,777 |
Classified |  |
Total | 4,777 |
Gross charge-offs | 192 |
2024 [Member] |  |
Short-Term Debt [Line Items] |  |
Nonclassified | 195,234 | 213,776
Classified | 13,995 | 11,753
Total | 209,229 | 225,529
Gross charge-offs | 8 | 376
2024 [Member] | One to Four Family Residential Real Estate [Member] |  |
Short-Term Debt [Line Items] |  |
Nonclassified | 82,317 | 86,701
Classified |  |
Total | 82,317 | 86,701
Gross charge-offs |  |
2024 [Member] | Construction and Land Loans [Member] |  |
Short-Term Debt [Line Items] |  |
Nonclassified | 3,562 | 6,481
Classified |  |
Total | 3,562 | 6,481
Gross charge-offs |  |
2024 [Member] | Commercial Real Estate [Member] |  |
Short-Term Debt [Line Items] |  |
Nonclassified | 56,064 | 59,717
Classified | 1,350 | 360
Total | 57,414 | 60,077
Gross charge-offs |  |
2024 [Member] | Commercial Loans [Member] |  |
Short-Term Debt [Line Items] |  |
Nonclassified | 36,988 | 31,083
Classified | 2,691 | 3,104
Total | 47,545 | 42,447
Gross charge-offs | 8 |
2024 [Member] | Agriculture Loans [Member] |  |
Short-Term Debt [Line Items] |  |
Nonclassified | 14,447 | 21,379
Classified | 2,088 | 29
Total | 16,535 | 21,408
Gross charge-offs |  |
2024 [Member] | Municipal Loans [Member] |  |
Short-Term Debt [Line Items] |  |
Nonclassified |  | 5,565
Classified |  |
Total |  | 5,565
Gross charge-offs |  |
2024 [Member] | Consumer Loans [Member] |  |
Short-Term Debt [Line Items] |  |
Nonclassified | 1,856 | 2,850
Classified |  |
Total | 1,856 | 2,850
Gross charge-offs |  | 376
2023 [Member] |  |
Short-Term Debt [Line Items] |  |
Nonclassified | 167,829 | 177,339
Classified | 1,593 | 2,029
Total | 169,422 | 179,368
Gross charge-offs |  | 7
2023 [Member] | One to Four Family Residential Real Estate [Member] |  |
Short-Term Debt [Line Items] |  |
Nonclassified | 81,050 | 84,467
Classified |  |
Total | 81,050 | 84,467
Gross charge-offs |  |
2023 [Member] | Construction and Land Loans [Member] |  |
Short-Term Debt [Line Items] |  |
Nonclassified | 11,194 | 11,202
Classified |  |
Total | 11,194 | 11,202
Gross charge-offs |  |
2023 [Member] | Commercial Real Estate [Member] |  |
Short-Term Debt [Line Items] |  |
Nonclassified | 50,279 | 47,624
Classified |  |
Total | 50,279 | 47,624
Gross charge-offs |  |
2023 [Member] | Commercial Loans [Member] |  |
Short-Term Debt [Line Items] |  |
Nonclassified | 19,623 | 27,158
Classified | 9,398 | 10,111
Total | 21,155 | 29,009
Gross charge-offs |  |
2023 [Member] | Agriculture Loans [Member] |  |
Short-Term Debt [Line Items] |  |
Nonclassified | 2,788 | 3,659
Classified | 61 | 178
Total | 2,849 | 3,837
Gross charge-offs |  |
2023 [Member] | Municipal Loans [Member] |  |
Short-Term Debt [Line Items] |  |
Nonclassified |  |
Classified |  |
Total |  |
Gross charge-offs |  |
2023 [Member] | Consumer Loans [Member] |  |
Short-Term Debt [Line Items] |  |
Nonclassified | 2,895 | 3,229
Classified |  |
Total | 2,895 | 3,229
Gross charge-offs |  | 7
2022 [Member] |  |
Short-Term Debt [Line Items] |  |
Nonclassified | 166,970 | 179,021
Classified | 3,755 | 2,154
Total | 170,725 | 181,175
Gross charge-offs |  | 17
2022 [Member] | One to Four Family Residential Real Estate [Member] |  |
Short-Term Debt [Line Items] |  |
Nonclassified | 70,145 | 75,517
Classified |  |
Total | 70,145 | 75,517
Gross charge-offs |  |
2022 [Member] | Construction and Land Loans [Member] |  |
Short-Term Debt [Line Items] |  |
Nonclassified | 1,789 | 1,937
Classified |  |
Total | 1,789 | 1,937
Gross charge-offs |  |
2022 [Member] | Commercial Real Estate [Member] |  |
Short-Term Debt [Line Items] |  |
Nonclassified | 63,439 | 68,854
Classified | 226 |
Total | 63,665 | 68,854
Gross charge-offs |  |
2022 [Member] | Commercial Loans [Member] |  |
Short-Term Debt [Line Items] |  |
Nonclassified | 19,415 | 23,574
Classified | 1,951 | 1,897
Total | 21,366 | 25,471
Gross charge-offs |  | 16
2022 [Member] | Agriculture Loans [Member] |  |
Short-Term Debt [Line Items] |  |
Nonclassified | 6,114 | 8,404
Classified | 1,578 | 257
Total | 7,692 | 8,661
Gross charge-offs |  |
2022 [Member] | Municipal Loans [Member] |  |
Short-Term Debt [Line Items] |  |
Nonclassified | 5,552 | 90
Classified |  |
Total | 5,552 | 90
Gross charge-offs |  |
2022 [Member] | Consumer Loans [Member] |  |
Short-Term Debt [Line Items] |  |
Nonclassified | 516 | 645
Classified |  |
Total | 516 | 645
Gross charge-offs |  | 1
2021 [Member] |  |
Short-Term Debt [Line Items] |  |
Nonclassified | 102,036 | 107,477
Classified | 962 | 934
Total | 102,998 | 108,411
Gross charge-offs | 11 | 114
2021 [Member] | One to Four Family Residential Real Estate [Member] |  |
Short-Term Debt [Line Items] |  |
Nonclassified | 34,933 | 37,411
Classified |  |
Total | 34,933 | 37,411
Gross charge-offs |  |
2021 [Member] | Construction and Land Loans [Member] |  |
Short-Term Debt [Line Items] |  |
Nonclassified | 1,644 | 1,697
Classified |  |
Total | 1,644 | 1,697
Gross charge-offs |  |
2021 [Member] | Commercial Real Estate [Member] |  |
Short-Term Debt [Line Items] |  |
Nonclassified | 52,515 | 53,868
Classified | 447 | 476
Total | 52,962 | 54,344
Gross charge-offs |  |
2021 [Member] | Commercial Loans [Member] |  |
Short-Term Debt [Line Items] |  |
Nonclassified | 8,625 | 9,813
Classified | 30 | 39
Total | 8,655 | 9,852
Gross charge-offs | 11 | 114
2021 [Member] | Agriculture Loans [Member] |  |
Short-Term Debt [Line Items] |  |
Nonclassified | 3,347 | 3,616
Classified | 485 | 419
Total | 3,832 | 4,035
Gross charge-offs |  |
2021 [Member] | Municipal Loans [Member] |  |
Short-Term Debt [Line Items] |  |
Nonclassified | 71 |
Classified |  |
Total | 71 |
Gross charge-offs |  |
2021 [Member] | Consumer Loans [Member] |  |
Short-Term Debt [Line Items] |  |
Nonclassified | 901 | 1,072
Classified |  |
Total | 901 | 1,072
Gross charge-offs |  |
Prior [Member] |  |
Short-Term Debt [Line Items] |  |
Nonclassified | 181,386 | 124,824
Classified | 8,649 | 1,714
Total | 190,035 | 126,538
Gross charge-offs |  | 88
Prior [Member] | One to Four Family Residential Real Estate [Member] |  |
Short-Term Debt [Line Items] |  |
Nonclassified | 53,197 | 35,112
Classified | 82 | 34
Total | 53,279 | 35,146
Gross charge-offs |  |
Prior [Member] | Construction and Land Loans [Member] |  |
Short-Term Debt [Line Items] |  |
Nonclassified | 3,842 | 1,340
Classified |  |
Total | 3,842 | 1,340
Gross charge-offs |  |
Prior [Member] | Commercial Real Estate [Member] |  |
Short-Term Debt [Line Items] |  |
Nonclassified | 101,013 | 67,351
Classified | 4,658 | 1,594
Total | 105,671 | 68,945
Gross charge-offs |  |
Prior [Member] | Commercial Loans [Member] |  |
Short-Term Debt [Line Items] |  |
Nonclassified | 7,179 | 2,203
Classified | 3,841 | 13
Total | 11,020 | 2,216
Gross charge-offs |  |
Prior [Member] | Agriculture Loans [Member] |  |
Short-Term Debt [Line Items] |  |
Nonclassified | 13,386 | 14,215
Classified | 68 | 73
Total | 13,454 | 14,288
Gross charge-offs |  | 64
Prior [Member] | Municipal Loans [Member] |  |
Short-Term Debt [Line Items] |  |
Nonclassified |  | 1,436
Classified |  |
Total |  | 1,436
Gross charge-offs |  |
Prior [Member] | Consumer Loans [Member] |  |
Short-Term Debt [Line Items] |  |
Nonclassified | 2,769 | 3,167
Classified |  |
Total | 2,769 | 3,167
Gross charge-offs |  | 24
Revolving Loans Amortized Cost [Member] |  |
Short-Term Debt [Line Items] |  |
Nonclassified | 143,109 | 139,507
Classified | 3,261 | 2,321
Total | 146,370 | 141,828
Gross charge-offs |  |
Revolving Loans Amortized Cost [Member] | One to Four Family Residential Real Estate [Member] |  |
Short-Term Debt [Line Items] |  |
Nonclassified | 6,480 | 5,552
Classified |  |
Total | 6,480 | 5,552
Gross charge-offs |  |
Revolving Loans Amortized Cost [Member] | Construction and Land Loans [Member] |  |
Short-Term Debt [Line Items] |  |
Nonclassified | 100 | 102
Classified |  |
Total | 100 | 102
Gross charge-offs |  |
Revolving Loans Amortized Cost [Member] | Commercial Real Estate [Member] |  |
Short-Term Debt [Line Items] |  |
Nonclassified | 3,409 | 3,217
Classified |  |
Total | 3,409 | 3,217
Gross charge-offs |  |
Revolving Loans Amortized Cost [Member] | Commercial Loans [Member] |  |
Short-Term Debt [Line Items] |  |
Nonclassified | 66,299 | 68,282
Classified | 1,988 | 1,969
Total | 68,287 | 70,251
Gross charge-offs |  |
Revolving Loans Amortized Cost [Member] | Agriculture Loans [Member] |  |
Short-Term Debt [Line Items] |  |
Nonclassified | 47,088 | 44,458
Classified | 1,273 | 352
Total | 48,361 | 44,810
Gross charge-offs |  |
Revolving Loans Amortized Cost [Member] | Municipal Loans [Member] |  |
Short-Term Debt [Line Items] |  |
Nonclassified | 1,315 |
Classified |  |
Total | 1,315 |
Gross charge-offs |  |
Revolving Loans Amortized Cost [Member] | Consumer Loans [Member] |  |
Short-Term Debt [Line Items] |  |
Nonclassified | 18,418 | 17,896
Classified |  |
Total | 18,418 | 17,896
Gross charge-offs |  |
Revolving Loans Converted To Term [Member] |  |
Short-Term Debt [Line Items] |  |
Nonclassified | 628 | 697
Classified | 688 | 1,377
Total | 1,316 | 2,074
Gross charge-offs |  | 1
Revolving Loans Converted To Term [Member] | One to Four Family Residential Real Estate [Member] |  |
Short-Term Debt [Line Items] |  |
Nonclassified | 97 | 122
Classified |  |
Total | 97 | 122
Gross charge-offs |  |
Revolving Loans Converted To Term [Member] | Construction and Land Loans [Member] |  |
Short-Term Debt [Line Items] |  |
Nonclassified |  |
Classified |  |
Total |  |
Gross charge-offs |  |
Revolving Loans Converted To Term [Member] | Commercial Real Estate [Member] |  |
Short-Term Debt [Line Items] |  |
Nonclassified | 80 | 85
Classified |  |
Total | 80 | 85
Gross charge-offs |  |
Revolving Loans Converted To Term [Member] | Commercial Loans [Member] |  |
Short-Term Debt [Line Items] |  |
Nonclassified | 133 | 135
Classified | 688 | 1,377
Total | 821 | 1,512
Gross charge-offs |  |
Revolving Loans Converted To Term [Member] | Agriculture Loans [Member] |  |
Short-Term Debt [Line Items] |  |
Nonclassified | 216 | 217
Classified |  |
Total | 216 | 217
Gross charge-offs |  |
Revolving Loans Converted To Term [Member] | Municipal Loans [Member] |  |
Short-Term Debt [Line Items] |  |
Nonclassified |  |
Classified |  |
Total |  |
Gross charge-offs |  |
Revolving Loans Converted To Term [Member] | Consumer Loans [Member] |  |
Short-Term Debt [Line Items] |  |
Nonclassified | 102 | 138
Classified |  |
Total | 102 | 138
Gross charge-offs |  | 1
2020 [Member] |  |
Short-Term Debt [Line Items] |  |
Nonclassified |  | 83,633
Classified |  | 3,797
Total |  | 87,430
Gross charge-offs |  | 56
2020 [Member] | One to Four Family Residential Real Estate [Member] |  |
Short-Term Debt [Line Items] |  |
Nonclassified |  | 27,293
Classified |  |
Total |  | 27,293
Gross charge-offs |  |
2020 [Member] | Construction and Land Loans [Member] |  |
Short-Term Debt [Line Items] |  |
Nonclassified |  | 2,569
Classified |  |
Total |  | 2,569
Gross charge-offs |  |
2020 [Member] | Commercial Real Estate [Member] |  |
Short-Term Debt [Line Items] |  |
Nonclassified |  | 41,862
Classified |  | 151
Total |  | 42,013
Gross charge-offs |  |
2020 [Member] | Commercial Loans [Member] |  |
Short-Term Debt [Line Items] |  |
Nonclassified |  | 7,930
Classified |  | 3,637
Total |  | 11,567
Gross charge-offs |  | 56
2020 [Member] | Agriculture Loans [Member] |  |
Short-Term Debt [Line Items] |  |
Nonclassified |  | 3,297
Classified |  | 9
Total |  | 3,306
Gross charge-offs |  |
2020 [Member] | Municipal Loans [Member] |  |
Short-Term Debt [Line Items] |  |
Nonclassified |  |
Classified |  |
Total |  |
Gross charge-offs |  |
2020 [Member] | Consumer Loans [Member] |  |
Short-Term Debt [Line Items] |  |
Nonclassified |  | 682
Classified |  |
Total |  | 682
Gross charge-offs |  |

X
- Definition Financing receivable originated in current fiscal year charge off. + References No definition available. + Details
Name: | LARK_FinancingReceivableOriginatedInCurrentFiscalYearChargeoff
Namespace Prefix: | LARK_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Financing receivable originated in current fiscal year classified. + References No definition available. + Details
Name: | LARK_FinancingReceivableOriginatedInCurrentFiscalYearClassified
Namespace Prefix: | LARK_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Financing receivable originated in current fiscal year non classified. + References No definition available. + Details
Name: | LARK_FinancingReceivableOriginatedInCurrentFiscalYearNonclassified
Namespace Prefix: | LARK_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Financing receivable originated in current fiscal year totals. + References No definition available. + Details
Name: | LARK_FinancingReceivableOriginatedInCurrentFiscalYearTotals
Namespace Prefix: | LARK_
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_ShortTermDebtLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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_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_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_DebtInstrumentAxis=LARK_TwoThousandTwentyFiveMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=LARK_TwoThousandTwentyFourMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=LARK_TwoThousandTwentyThreeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=LARK_TwoThousandTwentyTwoMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=LARK_TwoThousandTwentyOneMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=LARK_PriorMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=LARK_RevolvingLoansAmortizedCostMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=LARK_RevolvingLoansConvertedToTermMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=LARK_TwoThousandAndTwentyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |