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Intangible Assets Subject to Amortization and Amortization Expense (Detail) (USD $) In Thousands, unless otherwise specified | Nov. 30, 2013 | Jun. 01, 2013
--- | --- | ---
Finite-Lived Intangible Assets [Line Items] |  |
Finite Lived Intangible Assets Gross | $ 1,045 | $ 1,023
Finite Lived Intangible Assets Accumulated Amortization | 164 | 115
Trade Names [Member] |  |
Finite-Lived Intangible Assets [Line Items] |  |
Finite Lived Intangible Assets Gross | 29 | 29
Finite Lived Intangible Assets Accumulated Amortization | 13 | 8
Customer Relationships [Member] |  |
Finite-Lived Intangible Assets [Line Items] |  |
Finite Lived Intangible Assets Gross | 969 | 947
Finite Lived Intangible Assets Accumulated Amortization | 141 | 101
Noncompete Agreements [Member] |  |
Finite-Lived Intangible Assets [Line Items] |  |
Finite Lived Intangible Assets Gross | 47 | 47
Finite Lived Intangible Assets Accumulated Amortization | $ 10 | $ 6

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- Definition Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275 + Details
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Namespace Prefix: | us-gaap_
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Period Type: | instant

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- Definition Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275 + Details
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Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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