Note 14 - Equity Incentive Plan - Option Activity (Details) - $ / shares	12 Months Ended
	Nov. 30, 2018	Nov. 30, 2017
Options Outstanding at Beginning of Period, Shares (in shares)	96,000	143,500
Options Outstanding at Beginning of Period, Weighted Average Exercise Price (in dollars per share)	$ 7.77	$ 8.78
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)	(47,500)
Options Expired or Forfeited, Weighted Average Exercise Price (in dollars per share)	$ 10.37	$ 10.84
Options Outstanding at the End of the Period, Shares (in shares)	59,000	96,000
Options Outstanding at the End of the Period, Weighted Average Exercise Price (in dollars per share)	$ 6.07	$ 7.77
Options Outstanding at the End of the Period, Weighted Average Remaining Contractual Term (Year)	3 years 313 days	3 years 200 days
Options Exercisable at the End of the Period, Shares (in shares)	59,000	96,000
Options Exercisable at the End of the Period, Weighted Average Exercise Price (in dollars per share)	$ 6.07	$ 7.77
Options Exercisable at the End of the Period, Weighted Average Remaining Contractual Term (Year)	3 years 313 days	3 years 200 days