Note 7 - Assets Available for Sale and Assets Held for Lease - Major Components Assets Available for Sale (Details) - USD ($)	Nov. 30, 2017	Nov. 30, 2016
Assets available for sale		$ 70,000
Ames, Iowa Powder Coat Print System [Member]
Assets available for sale		$ 70,000

Amount of assets held-for-sale that are not part of a disposal group.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 15
-Paragraph 4
-Subparagraph (b)(2)
-URI http://asc.fasb.org/extlink&oid=77912953&loc=d3e400-110220

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