Note 12 - Equity Incentive Plan - Option Activity (Details) - $ / shares	12 Months Ended
Nov. 30, 2020	Nov. 30, 2019
Options O/S at beginning of period (in shares)	59,000	59,000
Options O/S at beginning of period, Weighted Average Exercise Price (in dollars per share)	$ 6.07	$ 6.07
Granted, Shares (in shares)	0	0
Granted, Weighted Average Exercise Price (in dollars per share)
Exercised, Shares (in shares)
Exercised, Weighted Average Exercise Price (in dollars per share)
Options Expired or Forfeited, Shares (in shares)	(23,000)
Options Expired or Forfeited, Weighted Average Exercise Price (in dollars per share)	$ 5.56
Options O/S at end of Period (in shares)	36,000	59,000
Options O/S at end of period, Weighted Average Exercise Price (in dollars per share)	$ 6.40	$ 6.07
Options Outstanding at the End of the Period, Weighted Average Remaining Contractual Term (Year)	2 years 208 days	2 years 313 days
Options Exercisable At end of the Period (in shares)	36,000	59,000
Options Exercisable At end of the Period (in dollars per share)	$ 6.40	$ 6.07
Options Exercisable At end of the Period (Year)	2 years 208 days	2 years 313 days

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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Gross number of share options (or share units) granted during the period.

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

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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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Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options.

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Weighted average remaining contractual term for vested portions of options outstanding and currently exercisable or convertible, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Weighted average remaining contractual term for option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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

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