Note 7 - Impairment of Long-Lived Assets, Discontinued Operations and Property Held for Sale (Details) - Assets and Liabilities for All Discontinued Operations (USD $) In Thousands, unless otherwise specified	Nov. 19, 2014	Aug. 27, 2014
Note 7 - Impairment of Long-Lived Assets, Discontinued Operations and Property Held for Sale (Details) - Assets and Liabilities for All Discontinued Operations [Line Items]
Assets related to discontinued operations—current	$ 17	$ 52
Property and equipment, net	991	991
Liabilities related to discontinued operations—current	564	590
Liabilities related to discontinued operations—non-current	121	278
Discontinued Operations [Member]
Note 7 - Impairment of Long-Lived Assets, Discontinued Operations and Property Held for Sale (Details) - Assets and Liabilities for All Discontinued Operations [Line Items]
Prepaid expenses	17	52
Assets related to discontinued operations—current	17	52
Property and equipment, net	3,435	3,430
Other assets	1,385	1,387
Assets related to discontinued operations—non-current	4,820	4,817
Accrued expenses and other liabilities	564	590
Liabilities related to discontinued operations—current	564	590
Other liabilities	121	278
Liabilities related to discontinued operations—non-current	$ 121	$ 278

Note 7 - Impairment of Long-Lived Assets, Discontinued Operations and Property Held for Sale (Details) - Assets and Liabilities for All Discontinued Operations (USD $)
In Thousands, unless otherwise specified

Nov. 19, 2014

Aug. 27, 2014

Note 7 - Impairment of Long-Lived Assets, Discontinued Operations and Property Held for Sale (Details) - Assets and Liabilities for All Discontinued Operations [Line Items]

$ 17us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrent

$ 52us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrent

Property and equipment, net

991us-gaap_DisposalGroupIncludingDiscontinuedOperationPropertyPlantAndEquipment

564us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationCurrent

590us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationCurrent

121us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationNoncurrent

278us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationNoncurrent

Discontinued Operations [Member]

Note 7 - Impairment of Long-Lived Assets, Discontinued Operations and Property Held for Sale (Details) - Assets and Liabilities for All Discontinued Operations [Line Items]

Prepaid expenses

17lub_DisposalGroupIncludingDiscontinuedOperationsPrepaidExpenses
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= us-gaap_SegmentDiscontinuedOperationsMember

52lub_DisposalGroupIncludingDiscontinuedOperationsPrepaidExpenses
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17us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrent
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52us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrent
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Property and equipment, net

3,435us-gaap_DisposalGroupIncludingDiscontinuedOperationPropertyPlantAndEquipment
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= us-gaap_SegmentDiscontinuedOperationsMember

3,430us-gaap_DisposalGroupIncludingDiscontinuedOperationPropertyPlantAndEquipment
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= us-gaap_SegmentDiscontinuedOperationsMember

Other assets

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1,387us-gaap_DisposalGroupIncludingDiscontinuedOperationOtherNoncurrentAssets
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= us-gaap_SegmentDiscontinuedOperationsMember

4,820us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperation
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= us-gaap_SegmentDiscontinuedOperationsMember

4,817us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperation
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= us-gaap_SegmentDiscontinuedOperationsMember

Accrued expenses and other liabilities

564us-gaap_DisposalGroupIncludingDiscontinuedOperationAccruedLiabilities
/ us-gaap_StatementOperatingActivitiesSegmentAxis
= us-gaap_SegmentDiscontinuedOperationsMember

590us-gaap_DisposalGroupIncludingDiscontinuedOperationAccruedLiabilities
/ us-gaap_StatementOperatingActivitiesSegmentAxis
= us-gaap_SegmentDiscontinuedOperationsMember

564us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationCurrent
/ us-gaap_StatementOperatingActivitiesSegmentAxis
= us-gaap_SegmentDiscontinuedOperationsMember

590us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationCurrent
/ us-gaap_StatementOperatingActivitiesSegmentAxis
= us-gaap_SegmentDiscontinuedOperationsMember

Other liabilities

121us-gaap_DisposalGroupIncludingDiscontinuedOperationOtherNoncurrentLiabilities
/ us-gaap_StatementOperatingActivitiesSegmentAxis
= us-gaap_SegmentDiscontinuedOperationsMember

278us-gaap_DisposalGroupIncludingDiscontinuedOperationOtherNoncurrentLiabilities
/ us-gaap_StatementOperatingActivitiesSegmentAxis
= us-gaap_SegmentDiscontinuedOperationsMember

$ 121us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationNoncurrent
/ us-gaap_StatementOperatingActivitiesSegmentAxis
= us-gaap_SegmentDiscontinuedOperationsMember

$ 278us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationNoncurrent
/ us-gaap_StatementOperatingActivitiesSegmentAxis
= us-gaap_SegmentDiscontinuedOperationsMember

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Amount classified as assets attributable to disposal group held for sale or disposed of.

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Amount classified as assets attributable to disposal group held for sale or disposed of, expected to be disposed of within one year or the normal operating cycle, if longer.

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Amount classified as accrued liabilities attributable to disposal group held for sale or disposed of.

+ References

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

-Publisher FASB

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-Topic 205

-SubTopic 20

-Section 50

-Paragraph 1

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Amount classified as other assets attributable to disposal group held for sale or disposed of, expected to be disposed of after one year or the normal operating cycle, if longer.

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Amount classified as property, plant and equipment attributable to disposal group held for sale or disposed of.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 205

-SubTopic 20

-Section 45

-Paragraph 10

-URI http://asc.fasb.org/extlink&oid=6892542&loc=d3e1107-107759

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Amount classified as liabilities attributable to disposal group held for sale or disposed of, expected to be disposed of beyond one year or the normal operating cycle, if longer.

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