XML 36 R26.htm IDEA: XBRL DOCUMENT
v3.23.1

Investments (Tables) | 3 Months Ended
--- | ---
Mar. 31, 2023
Schedule of Investments [Abstract] |
Schedule of Available-for-sale and Held to Maturity Securities | A summary of investment securities available-for-sale and held-to-maturity is as follows: Schedule of Available-for-sale and Held to Maturity Securities
(Dollars in thousands) |  | As of March 31, 2023 |
|  |  |  |  | Gross |  |  | Gross |  |  |  |
|  | Amortized |  |  | unrealized |  |  | unrealized |  |  | Estimated |
|  | cost |  |  | gains |  |  | losses |  |  | fair value |
Available-for-sale: |  |  |  |  |  |  |  |  |  |  |  |
U. S. treasury securities |  | $ | 127,880 |  |  | $ | - |  |  | $ | (6,121 | ) |  | $ | 121,759 |
U. S. federal agency obligations |  |  | 2,001 |  |  |  | - |  |  |  | (8 | ) |  |  | 1,993 |
Municipal obligations, tax exempt |  |  | 130,326 |  |  |  | 161 |  |  |  | (2,206 | ) |  |  | 128,281 |
Municipal obligations, taxable |  |  | 78,164 |  |  |  | 113 |  |  |  | (4,809 | ) |  |  | 73,468 |
Agency mortgage-backed securities |  |  | 178,259 |  |  |  | 169 |  |  |  | (13,759 | ) |  |  | 164,669 |
Total available-for-sale |  | $ | 516,630 |  |  | $ | 443 |  |  | $ | (26,903 | ) |  | $ | 490,170 |
|  | As of March 31, 2023 |
|  |  |  |  | Gross |  |  | Gross |  |  |  |
|  | Amortized |  |  | unrealized |  |  | unrealized |  |  | Estimated |
|  | cost |  |  | gains |  |  | losses |  |  | fair value |
Held-to-maturity: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Other |  | $ | 3,467 |  |  | $ | - |  |  | $ | (318 | ) |  | $ | 3,149 |
Total held-to-maturity |  | $ | 3,467 |  |  | $ | - |  |  | $ | (318 | ) |  | $ | 3,149 |
|  | As of December 31, 2022 |
|  |  |  |  | Gross |  |  | Gross |  |  |  |
|  | Amortized |  |  | unrealized |  |  | unrealized |  |  | Estimated |
|  | cost |  |  | gains |  |  | losses |  |  | fair value |
Available-for-sale: |  |  |  |  |  |  |  |  |  |  |  |
U. S. treasury securities |  | $ | 130,684 |  |  | $ | - |  |  | $ | (7,573 | ) |  | $ | 123,111 |
U. S. federal agency obligations |  |  | 2,002 |  |  |  | - |  |  |  | (14 | ) |  |  | 1,988 |
Municipal obligations, tax exempt |  |  | 130,848 |  |  |  | 59 |  |  |  | (3,645 | ) |  |  | 127,262 |
Municipal obligations, taxable |  |  | 73,520 |  |  |  | 14 |  |  |  | (6,290 | ) |  |  | 67,244 |
Agency mortgage-backed securities |  |  | 185,451 |  |  |  | 172 |  |  |  | (15,922 | ) |  |  | 169,701 |
Total available-for-sale |  | $ | 522,505 |  |  | $ | 245 |  |  | $ | (33,444 | ) |  | $ | 489,306 |
|  | As of December 31, 2022 |
|  |  |  |  | Gross |  |  | Gross |  |  |  |
|  | Amortized |  |  | unrealized |  |  | unrealized |  |  | Estimated |
|  | cost |  |  | gains |  |  | losses |  |  | fair value |
Held-to-maturity: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Other |  | $ | 3,524 |  |  | $ | 5 |  |  | $ | (77 | ) |  | $ | 3,452 |
Total held-to-maturity |  | $ | 3,524 |  |  | $ | 5 |  |  | $ | (77 | ) |  | $ | 3,452 |
Schedule of Available for Sale Securities Continuous Unrealized Loss Position Fair Value | Schedule of Available for Sale Securities Continuous Unrealized Loss Position Fair Value
|  |  |  |  | As of March 31, 2023 |
(Dollars in thousands) |  |  |  |  | Less than 12 months |  |  | 12 months or longer |  |  | Total |
|  | No. of |  |  | Fair |  |  | Unrealized |  |  | Fair |  |  | Unrealized |  |  | Fair |  |  | Unrealized |
Available-for-sale: |  | securities |  |  | value |  |  | losses |  |  | value |  |  | losses |  |  | value |  |  | losses |
U.S. treasury securities |  |  | 66 |  |  | $ | 17,306 |  |  | $ | (465 | ) |  | $ | 104,452 |  |  | $ | (5,656 | ) |  | $ | 121,758 |  |  | $ | (6,121 | )
U.S. federal agency obligations |  |  | 1 |  |  |  | 1,993 |  |  |  | (8 | ) |  |  | - |  |  |  | - |  |  |  | 1,993 |  |  |  | (8 | )
Municipal obligations, tax exempt |  |  | 222 |  |  |  | 43,274 |  |  |  | (314 | ) |  |  | 55,701 |  |  |  | (1,892 | ) |  |  | 98,975 |  |  |  | (2,206 | )
Municipal obligations, taxable |  |  | 108 |  |  |  | 40,834 |  |  |  | (1,557 | ) |  |  | 24,672 |  |  |  | (3,252 | ) |  |  | 65,506 |  |  |  | (4,809 | )
Agency mortgage-backed securities |  |  | 100 |  |  |  | 35,877 |  |  |  | (937 | ) |  |  | 118,322 |  |  |  | (12,822 | ) |  |  | 154,199 |  |  |  | (13,759 | )
Total for available-for-sale |  |  | 497 |  |  | $ | 139,284 |  |  | $ | (3,281 | ) |  | $ | 303,147 |  |  | $ | (23,623 | ) |  | $ | 442,431 |  |  | $ | (26,904 | )
Held-to-maturity: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Other |  |  | 7 |  |  | $ | 3,149 |  |  | $ | (318 | ) |  | $ | - |  |  | $ | - |  |  | $ | 3,149 |  |  | $ | (318 | )
Total held-to-maturity |  |  | 7 |  |  |  | 3,149 |  |  |  | (318 | ) |  |  | - |  |  |  | - |  |  |  | 3,149 |  |  |  | (318 | )
|  |  |  |  | As of December 31, 2022 |
|  |  |  |  | Less than 12 months |  |  | 12 months or longer |  |  | Total |
|  | No. of |  |  | Fair |  |  | Unrealized |  |  | Fair |  |  | Unrealized |  |  | Fair |  |  | Unrealized |
Available-for-sale: |  | securities |  |  | value |  |  | losses |  |  | value |  |  | losses |  |  | value |  |  | losses |
U.S. treasury securities |  |  | 67 |  |  | $ | 85,988 |  |  | $ | (4,591 | ) |  | $ | 37,123 |  |  | $ | (2,982 | ) |  | $ | 123,111 |  |  | $ | (7,573 | )
U.S. federal agency obligations |  |  | 1 |  |  |  | 1,988 |  |  |  | (14 | ) |  |  | - |  |  |  | - |  |  |  | 1,988 |  |  |  | (14 | )
Municipal obligations, tax exempt |  |  | 274 |  |  |  | 107,262 |  |  |  | (3,020 | ) |  |  | 8,495 |  |  |  | (625 | ) |  |  | 115,757 |  |  |  | (3,645 | )
Municipal obligations, taxable |  |  | 108 |  |  |  | 54,746 |  |  |  | (5,006 | ) |  |  | 7,571 |  |  |  | (1,284 | ) |  |  | 62,317 |  |  |  | (6,290 | )
Agency mortgage-backed securities |  |  | 100 |  |  |  | 78,971 |  |  |  | (4,550 | ) |  |  | 79,882 |  |  |  | (11,372 | ) |  |  | 158,853 |  |  |  | (15,922 | )
Total for available-for-sale |  |  | 550 |  |  |  | 328,955 |  |  |  | (17,181 | ) |  |  | 133,071 |  |  |  | (16,263 | ) |  |  | 462,026 |  |  |  | (33,444 | )
Held-to-maturity: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Other |  |  | 6 |  |  | $ | 3,009 |  |  | $ | (77 | ) |  | $ | - |  |  | $ | - |  |  | $ | 3,009 |  |  | $ | (77 | )
Total held-to-maturity |  |  | 6 |  |  |  | 3,009 |  |  |  | (77 | ) |  |  | - |  |  |  | - |  |  |  | 3,009 |  |  |  | (77 | )
Schedule of Allowance for Credit Losses Related to Held-to-maturity Investment Securities | The following table provides information on the Company’s allowance for credit losses related to held-to-maturity investment securities. Schedule of Allowance for Credit Losses Related to Held-to-maturity Investment Securities
(dollar in thousands) |  |  |  |
Balance at January 1, 2023 |  | $ | - |
Impact of adopting ASC 326 |  |  | 72 |
Provision for credit losses |  |  | 19 |
Balance at March 31, 2023 |  | $ | 91 |
Schedule of Investments Classified by Contractual Maturity Date | Schedule of Investments Classified by Contractual Maturity Date
(Dollars in thousands) |  | Amortized |  |  | Estimated |
Available-for-sale: |  | cost |  |  | fair value |
Due in less than one year |  | $ | 25,401 |  |  | $ | 25,096 |
Due after one year but within five years |  |  | 281,185 |  |  |  | 265,879 |
Due after five years but within ten years |  |  | 155,835 |  |  |  | 147,293 |
Due after ten years |  |  | 54,209 |  |  |  | 51,902 |
Total available-for-sale |  | $ | 516,630 |  |  | $ | 490,170 |
Held-to-maturity: |  |  |  |  |  |  |  |
Due after one year but within five years |  |  | 3,467 |  |  |  | 3,149 |
Total held-to-maturity |  | $ | 3,467 |  |  | $ | 3,149 |

X
- Definition Schedule Of Available For Sale Securities Continuous Unrealized Loss Position Fair Value [Table Text Block] + References No definition available. + Details
Name: | LARK_ScheduleOfAvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValueTableTextBlock
Namespace Prefix: | LARK_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 9 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481800/320-10-50-9 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481800/320-10-50-3 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481800/320-10-50-2 Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481800/320-10-50-2 Reference 5: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481800/320-10-50-2 Reference 6: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (aa) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481800/320-10-50-2 Reference 7: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (aaa) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481800/320-10-50-2 Reference 8: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481800/320-10-50-2 Reference 9: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481800/320-10-50-3 Reference 10: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481800/320-10-50-3 Reference 11: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481800/320-10-50-3 Reference 12: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481800/320-10-50-3 + Details
Name: | us-gaap_DebtSecuritiesAvailableForSaleTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of allowance for credit loss on investment in debt security measured at amortized cost (held-to-maturity). + 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_DebtSecuritiesHeldToMaturityAllowanceForCreditLossTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of maturities of an entity's investments as well as any other information pertinent to the investments. + References No definition available. + Details
Name: | us-gaap_InvestmentsClassifiedByContractualMaturityDateTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_ScheduleOfInvestmentsAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration