XML 75 R59.htm IDEA: XBRL DOCUMENT
v3.3.1.900

Loans and Allowance for Loan Losses (Details 2) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
Financing Receivable, Impaired [Line Items] |  |  |
Unpaid contractual principal | $ 8,589 | $ 12,504 | $ 18,557
Impaired loan balance | 6,800 | 10,700 | 16,756
Impaired loans without an allowance | 6,467 | 8,819 | 7,568
Impaired loans with an allowance | 370 | 1,884 | 9,188
Related allowance recorded | 88 | 349 | 951
Year-to-date average loan balance | 7,408 | 12,520 | 13,219
Year-to-date interest income recognized | 288 | 288 | 317
Residential Real Estate [Member] |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Unpaid contractual principal | 752 | 1,589 | 782
Impaired loan balance | 752 | 1,589 | 782
Impaired loans without an allowance | 408 | 167 | 326
Impaired loans with an allowance | 344 | 1,422 | 456
Related allowance recorded | 78 | 287 | 82
Year-to-date average loan balance | 1,041 | 1,611 | 800
Year-to-date interest income recognized | 0 | 0 | 0
Construction Loans [Member] |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Unpaid contractual principal | 3,955 | 6,540 | 9,895
Impaired loan balance | 2,220 | 4,805 | 8,160
Impaired loans without an allowance | 2,220 | 4,805 | 6,098
Impaired loans with an allowance | 0 | 0 | 2,062
Related allowance recorded | 0 | 0 | 234
Year-to-date average loan balance | 2,389 | 6,366 | 8,383
Year-to-date interest income recognized | 88 | 235 | 279
Commercial Real Estate [Member] |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Unpaid contractual principal | 2,429 | 2,880 | 2,936
Impaired loan balance | 2,429 | 2,880 | 2,936
Impaired loans without an allowance | 2,429 | 2,833 | 278
Impaired loans with an allowance | 0 | 47 | 2,658
Related allowance recorded | 0 | 17 | 140
Year-to-date average loan balance | 2,484 | 3,009 | 3,046
Year-to-date interest income recognized | 175 | 24 | 18
Commercial Loan [Member] |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Unpaid contractual principal | 637 | 371 | 4,148
Impaired loan balance | 620 | 371 | 4,148
Impaired loans without an allowance | 620 | 137 | 154
Impaired loans with an allowance | 0 | 234 | 3,994
Related allowance recorded | 0 | 28 | 488
Year-to-date average loan balance | 634 | 393 | 192
Year-to-date interest income recognized | 3 | 10 | 0
Agriculture Loans [Member] |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Unpaid contractual principal | 189 | 285 |
Impaired loan balance | 189 | 285 |
Impaired loans without an allowance | 189 | 146 |
Impaired loans with an allowance | 0 | 139 |
Related allowance recorded | 0 | 5 |
Year-to-date average loan balance | 188 | 294 |
Year-to-date interest income recognized | 3 | 0 |
Municipal Bonds [Member] |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Unpaid contractual principal | 591 | 772 | 772
Impaired loan balance | 591 | 706 | 706
Impaired loans without an allowance | 591 | 706 | 706
Impaired loans with an allowance | 0 | 0 | 0
Related allowance recorded | 0 | 0 | 0
Year-to-date average loan balance | 631 | 772 | 772
Year-to-date interest income recognized | 19 | 19 | 20
Consumer Loan [Member] |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Unpaid contractual principal | 36 | 67 | 24
Impaired loan balance | 36 | 67 | 24
Impaired loans without an allowance | 10 | 25 | 6
Impaired loans with an allowance | 26 | 42 | 18
Related allowance recorded | 10 | 12 | 7
Year-to-date average loan balance | 41 | 75 | 26
Year-to-date interest income recognized | $ 0 | $ 0 | $ 0

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 No definition available. + Details
Name: | lark_ImpairedFinancingReceivableInterestIncomeRecognized
Namespace Prefix: | lark_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
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_FinancingReceivableImpairedLineItems
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://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=49124121&loc=d3e5212-111524 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 17 -URI http://asc.fasb.org/extlink&oid=49124121&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 investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 14A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=49124121&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://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=49124121&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://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (a)(4) -URI http://asc.fasb.org/extlink&oid=49124121&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://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 14A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=49124121&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://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 14A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=49124121&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_DefinedBenefitPlanByPlanAssetCategoriesAxis=us-gaap_ResidentialRealEstateMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis=us-gaap_ConstructionLoansMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis=us-gaap_CommercialRealEstateMember
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=us-gaap_MunicipalBondsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_ConsumerLoanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |