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v3.24.3

Schedule of Shares Used in Calculation of Basic and Diluted Earnings Per Share (Details) (Parenthetical) | 1 Months Ended
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Dec. 31, 2024 | Dec. 31, 2023
Earnings per share: |  |
Percentage of stock dividend | 5.00% | 5.00%

X
- Definition Stock dividend, percentage. + References No definition available. + Details
Name: | LARK_PercentageOfStockDividend
Namespace Prefix: | LARK_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

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