Note 6 - Assets Available for Sale (Details) - Major Components of Assets Available for Sale (USD $)	Nov. 30, 2012
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

Long-lived assets that are held for sale apart from normal operations and anticipated to be sold in less than one year.

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

Name:	us-gaap_AssetsHeldForSaleLongLived
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant