Note 14 - Equity Incentive Plan - Option Activity (Details) - $ / shares	12 Months Ended
	Nov. 30, 2019	Nov. 30, 2018	Nov. 30, 2019	Nov. 30, 2018
Options O/S at beginning of period (in shares)	59,000	96,000
Options O/S at beginning of period, Weighted Average Exercise Price (in dollars per share)	$ 6.07	$ 7.77
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)		(37,000)
Options Expired or Forfeited, Weighted Average Exercise Price (in dollars per share)		$ 10.37
Options O/S at end of period (in shares)	59,000	96,000	59,000	59,000
Options O/S at end of period, Weighted Average Exercise Price (in dollars per share)	$ 6.07	$ 6.07
Options Outstanding at the End of the Period, Weighted Average Remaining Contractual Term (Year)	2 years 313 days	3 years 313 days
Options Exercisable at end of the period (in shares)	59,000	59,000
Options Exercisable, Weighted Average Exercise Price (in dollars per share)			$ 6.07	$ 6.07
Options Exercisable at the End of the Period, Weighted Average Remaining Contractual Term (Year)	2 years 313 days	3 years 313 days