Note 13 - Capital Stock and Stock Compensation - Changes in Outstanding Options (Details)	12 Months Ended
Nov. 30, 2019 $ / shares shares
Outstanding, Shares (in shares) \| shares	8,350
Outstanding, weighted average exercise price per share (in dollars per share) \| $ / shares	$ 8.02
Exercised, Shares (in shares) \| shares	(3,100)
Exercised, weighted average exercise price per share (in dollars per share) \| $ / shares	$ 8.02
Forfeited/Expired, Shares (in shares) \| shares	0
Forfeited/Expired, weighted average exercise price per share (in dollars per share) \| $ / shares	$ 0
Outstanding, Shares (in shares) \| shares	5,250
Outstanding, weighted average exercise price per share (in dollars per share) \| $ / shares	$ 8.02
Exercisable, Shares (in shares) \| shares	5,250
Exercisable, weighted average exercise price per share (in dollars per share) \| $ / shares	$ 8.02

The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.

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The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan.

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For presentations that combine terminations, the number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan or that expired.

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Weighted average price of options that were either forfeited or expired.

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Number of options outstanding, including both vested and non-vested options.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901

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Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

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Weighted average price at which option holders acquired shares when converting their stock options into shares.

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No definition available.

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Number of share options (or share units) exercised during the current period.

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