Note 1 - Summary of Significant Account Policies (Details) (USD $)	12 Months Ended
Nov. 30, 2013	Nov. 30, 2012
Note 1 - Summary of Significant Account Policies (Details) [Line Items]
Overdue Trade Receivables, Interest Rate, Percent of Account Balances Per Month	1.50%
Finite-Lived Intangible Asset, Useful Life	5 years
Sales Revenue, Goods, Gross	$ 788,000	$ 937,000
Research and Development Expense	174,000	125,000
Advertising Expense	$ 479,000	$ 256,000
Modular Buildings [Member] \| Customer Concentration Risk [Member] \| Sales Revenue, Net [Member]
Note 1 - Summary of Significant Account Policies (Details) [Line Items]
Concentration Risk, Percentage		25.00%
Agricultural Products [Member] \| Customer Concentration Risk [Member] \| Sales Revenue, Net [Member]
Note 1 - Summary of Significant Account Policies (Details) [Line Items]
Concentration Risk, Percentage		12.00%
Assets Leased to Others [Member]
Note 1 - Summary of Significant Account Policies (Details) [Line Items]
Property, Plant and Equipment, Useful Life	5 years
Customer Concentration Risk [Member] \| Maximum [Member] \| Sales Revenue, Net [Member]
Note 1 - Summary of Significant Account Policies (Details) [Line Items]
Concentration Risk, Percentage	6.00%
Maximum [Member]
Note 1 - Summary of Significant Account Policies (Details) [Line Items]
Property, Plant and Equipment, Useful Life	40 years
Minimum [Member]
Note 1 - Summary of Significant Account Policies (Details) [Line Items]
Property, Plant and Equipment, Useful Life	3 years

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The interest rate for overdue trade receivables as a percent of account balances per month.

+ References

No definition available.

+ Details

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- Definition

Amount charged to advertising expense for the period, which are expenses incurred with the objective of increasing revenue for a specified brand, product or product line.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 720

-SubTopic 35

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6420018&loc=d3e36677-107848

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- Definition

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 825

-SubTopic 10

-Section 50

-Paragraph 21

-Subparagraph (a)

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-Name Accounting Standards Codification

-Topic 275

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-Section 50

-Paragraph 20

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-Name Accounting Standards Codification

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-Name Accounting Standards Codification

-Topic 275

-SubTopic 10

-Section 50

-Paragraph 18

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- Definition

Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

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- Definition

Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

+ References

No definition available.

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- Definition

The aggregate costs incurred (1) in a planned search or critical investigation aimed at discovery of new knowledge with the hope that such knowledge will be useful in developing a new product or service, a new process or technique, or in bringing about a significant improvement to an existing product or process; or (2) to translate research findings or other knowledge into a plan or design for a new product or process or for a significant improvement to an existing product or process whether intended for sale or the entity's use, during the reporting period charged to research and development projects, including the costs of developing computer software up to the point in time of achieving technological feasibility, and costs allocated in accounting for a business combination to in-process projects deemed to have no alternative future use.

+ References

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 985

-SubTopic 20

-Section 50

-Paragraph 1

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-Name Accounting Standards Codification

-Topic 730

-SubTopic 10

-Section 50

-Paragraph 1

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- Definition

Aggregate revenue during the period from sale of goods in the normal course of business, before deducting returns, allowances and discounts.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.1(a))

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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 1

-Article 5

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