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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, 2012 | Jun. 30, 2011
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Summary Of Significant Accounting Policies [Abstract] |  |
Work in process as a percentage of the combined total of finished goods and work in process | 3.00% | 4.00%

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- Definition Percentage of Work in process inventories to the combined total of finished goods and work in process. + References No definition available. + Details
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Namespace Prefix: | lanc_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

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- Details
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Namespace Prefix: | us-gaap_
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Balance Type: | na
Period Type: | duration