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Defined Contribution And Other Employee Plans (Schedule Of Deferred Compensation Expense) (Details) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
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Jun. 30, 2012 | Jun. 30, 2011 | Jun. 30, 2010
Defined Contribution And Other Employee Plans [Abstract] |  |  |
Deferred compensation expense | $ 101 | $ 88 | $ 80

X
- Definition Expense recognized during the reporting period related to interest on deferred compensation balances. + References No definition available. + Details
Name: | lanc_DeferredCompensationExpenseInterest
Namespace Prefix: | lanc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Details
Name: | lanc_DefinedContributionAndOtherEmployeePlansAbstract
Namespace Prefix: | lanc_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration