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Note 2 - Summary of Significant Accounting Policies (Details) - Property, Plant and Equipment, Estimated Useful Lives | 12 Months Ended
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Dec. 28, 2014
Building and Building Improvements [Member] | Minimum [Member] |
Significant Acquisitions and Disposals [Line Items] |
Property, plant, and equipment, useful life | 5 years
Building and Building Improvements [Member] | Maximum [Member] |
Significant Acquisitions and Disposals [Line Items] |
Property, plant, and equipment, useful life | 40 years
Furniture and Equipment [Member] | Minimum [Member] |
Significant Acquisitions and Disposals [Line Items] |
Property, plant, and equipment, useful life | 3 years
Furniture and Equipment [Member] | Maximum [Member] |
Significant Acquisitions and Disposals [Line Items] |
Property, plant, and equipment, useful life | 15 years

X
- Definition Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment. + References No definition available. + Details
Name: | us-gaap_PropertyPlantAndEquipmentUsefulLife
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | us-gaap_SignificantAcquisitionsAndDisposalsLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_PropertyPlantAndEquipmentByTypeAxis=laco_FurnitureAndEquipmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PropertyPlantAndEquipmentByTypeAxis=us-gaap_BuildingAndBuildingImprovementsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |