XML 34 R18.htm IDEA: XBRL DOCUMENT
v3.25.1

Bank Stocks | 12 Months Ended
--- | ---
Dec. 31, 2024
Bank Stocks |
Bank Stocks | (5) Bank Stocks Bank stocks primarily consist of restricted investments in FHLB and Federal Reserve Bank (“FRB”) stock. The carrying value of the FHLB stock at December 31, 2024 was $3.5 million compared to $5.0 million at December 31, 2023. The carrying value of the FRB stock at both December 31, 2024 and 2023 was $3.0 million. These securities are not readily marketable and are required for regulatory purposes and borrowing availability. Since there are no available market values, these securities are carried at cost. Redemption of these investments at par value is at the option of the FHLB or FRB, as applicable. Also included in Bank stocks are other miscellaneous investments in the common stock of various correspondent banks which are held for borrowing purposes and totaled $111,000 at December 31, 2024 and 2023.

X
- Definition Bank Stocks Disclosure [Text Block] + References No definition available. + Details
Name: | LARK_BankStocksDisclosureTextBlock
Namespace Prefix: | LARK_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

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