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Note 6 - Assets Available for Sale (Details) - Major Components of Assets Available for Sale (USD $) | Nov. 30, 2012
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Long Lived Assets Held-for-sale [Line Items] |
Assets available for sale | $ 205,508
Salem, South Dakota Facility [Member] |
Long Lived Assets Held-for-sale [Line Items] |
Assets available for sale | 87,500
Armstrong, Iowa Farm and Pasture Land [Member] |
Long Lived Assets Held-for-sale [Line Items] |
Assets available for sale | $ 118,008

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- Definition Long-lived assets that are held for sale apart from normal operations and anticipated to be sold in less than one year. + 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 + Details
Name: | us-gaap_AssetsHeldForSaleLongLived
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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