Note 1 - Summary of Significant Account Policies (Details Textual) (USD $)	12 Months Ended
Nov. 30, 2014	Nov. 30, 2013
Accounting Policies [Abstract]
Overdue Trade Receivables Interest Rate Percent of Account Balances Per Month	1.50%
Goodwill, Impairment Loss	$ 0us-gaap_GoodwillImpairmentLoss	$ 0us-gaap_GoodwillImpairmentLoss
Sales Revenue, Goods, Gross	628,000us-gaap_SalesRevenueGoodsGross	788,000us-gaap_SalesRevenueGoodsGross
Research and Development Expense	191,000us-gaap_ResearchAndDevelopmentExpense	174,000us-gaap_ResearchAndDevelopmentExpense
Advertising Expense	511,000us-gaap_AdvertisingExpense	479,000us-gaap_AdvertisingExpense
Revenue from Related Parties	$ 59,000us-gaap_RevenueFromRelatedParties
Maximum [Member]
Accounting Policies [Abstract]
Property, Plant and Equipment, Useful Life	40 years
Minimum [Member]
Accounting Policies [Abstract]
Property, Plant and Equipment, Useful Life	3 years
Assets Leased to Others [Member]
Accounting Policies [Abstract]
Property, Plant and Equipment, Useful Life	5 years
Sales Revenue, Net [Member] \| Customer Concentration Risk [Member] \| Maximum [Member]
Accounting Policies [Abstract]
Concentration Risk, Percentage	7.00%	6.00%

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

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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

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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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-Topic 275

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-Section 50

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Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 28

-Subparagraph (b)

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-Topic 350

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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

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- Definition

Amount of revenue, fees and commissions earned from transactions between (a) a parent company and its subsidiaries; (b) subsidiaries of a common parent; (c) an entity and trusts for the benefit of employees, for example, but not limited to, pension and profit-sharing trusts that are managed by or under the trusteeship of the entity's management; (d) an entity and its principal, owners, management, or members of their immediate families; and (e) affiliates.

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.1(e))

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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 1

-Article 5

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-Glossary Related Parties

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-Topic 946

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-Section S99

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-Subparagraph (SX 210.6-07.1(c))

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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.

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