Summary Of Significant Accounting Policies (Schedule Of Work In Process Inventory As Percentage Of Total Work In Process And Finished Goods Inventory) (Details)	Jun. 30, 2013	Jun. 30, 2012
Summary Of Significant Accounting Policies [Abstract]
Work in process as a percentage of the combined total of finished goods and work in process	4.00%	3.00%

Percentage of Work in process inventories to the combined total of finished goods and work in process.

No definition available.

Name:	lanc_PercentageOfWorkInProcessInventoriesToCombinedTotalOfFinishedGoodsAndWorkInProcess
Namespace Prefix:	lanc_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant