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Note 6 - Assets Available for Sale (Detail) - Components of Assets Available for Sale (USD $) | Nov. 30, 2012 | Nov. 30, 2011
--- | --- | ---
Asset Held For Sale | $ 205,508 | $ 186,362
Salem, South Dakota [Member] |  |
Asset Held For Sale | 87,500 | 186,362
Armstrong, Iowa [Member] |  |
Asset Held For Sale | $ 118,008 | $ 0

X
- 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 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 144 -Paragraph 46 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
Name: | us-gaap_AssetsHeldForSaleLongLived
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant