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Earnings per Share (Details Textual)	12 Months Ended
	Dec. 31, 2015
Percentage Of Stocks Dividend	5.00%

X

- Definition

The percentage rate used to calculate stock dividend payments.

+ References

No definition available.

+ Details

Name:	lark_PercentageOfStocksDividend
Namespace Prefix:	lark_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration