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: