Summary Of Significant Accounting Poilicies (Schedule Of Negative Book Cash Balances Reclassed To Other Accrued Liabilities) (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Jun. 30, 2012
Summary Of Significant Accounting Policies [Abstract]
Negative book cash balances reclassed to other accrued liabilities	$ 324	$ 0

Carrying value as of the balance sheet date of checks issued but not presented to the banks for payment, resulting in negative book cash balances that are reclassed to other accrued liabilities.

No definition available.

Name:	lanc_BookCashOverdrafts
Namespace Prefix:	lanc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant