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Note 4 - Property and Equipment, Net (Details) (USD $)	3 Months Ended	0 Months Ended
	Mar. 29, 2015	Mar. 26, 2015	Dec. 28, 2014
Note 4 - Property and Equipment, Net (Details) [Line Items]
Property, Plant and Equipment, Net	$ 28,292,000us-gaap_PropertyPlantAndEquipmentNet		$ 32,739,000us-gaap_PropertyPlantAndEquipmentNet
Office Facility Located in Minnetonka, Minnesota [Member]
Note 4 - Property and Equipment, Net (Details) [Line Items]
Property, Plant and Equipment, Net		4,700,000us-gaap_PropertyPlantAndEquipmentNet / us-gaap_PropertyPlantAndEquipmentByTypeAxis = laco_OfficeFacilityLocatedInMinnetonkaMinnesotaMember
Impairment of Long-Lived Assets to be Disposed of	300,000us-gaap_ImpairmentOfLongLivedAssetsToBeDisposedOf / us-gaap_PropertyPlantAndEquipmentByTypeAxis = laco_OfficeFacilityLocatedInMinnetonkaMinnesotaMember
Office Facility Located in Minnetonka, Minnesota [Member]
Note 4 - Property and Equipment, Net (Details) [Line Items]
Disposal Group, Including Discontinued Operation, Consideration		4,700,000us-gaap_DisposalGroupIncludingDiscontinuedOperationConsideration / us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis = laco_OfficeFacilityLocatedInMinnetonkaMinnesotaMember
Purchase and Sale Agreement, Fees and Closing Costs		300,000laco_PurchaseAndSaleAgreementFeesAndClosingCosts / us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis = laco_OfficeFacilityLocatedInMinnetonkaMinnesotaMember
Property, Plant and Equipment, Net	$ 4,400,000us-gaap_PropertyPlantAndEquipmentNet / us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis = laco_OfficeFacilityLocatedInMinnetonkaMinnesotaMember

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- Definition

Represents fees and closing costs incurred under purchase and sale agreement.

+ References

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- Definition

Amount of consideration received or receivable for the disposal of assets and liabilities, including discontinued operation.

+ References

No definition available.

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- Definition

The aggregate amount of write-downs for impairments recognized during the period for long-lived assets held for abandonment, exchange or sale.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 28

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3602-108585



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 360

-SubTopic 10

-Section 45

-Paragraph 15

-URI http://asc.fasb.org/extlink&oid=51824106&loc=d3e2611-110228

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Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 360

-SubTopic 10

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.13)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682



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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 13

-Subparagraph a

-Article 5



Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 8

-Article 7

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