Schedule of Gains from Changes in Fair Value of Derivative Financial Instruments (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Fair Value Disclosures [Abstract]
Total change in fair value	$ (42)	$ (143)	$ 173	$ 13

Gains loss from changes in fair value of derivative financial instruments.

No definition available.

Name:	LARK_GainsLossFromChangesInFairValueOfDerivativeFinancialInstruments
Namespace Prefix:	LARK_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration