Note 10 - Equity Incentive Plan - Option Activity (Details) (USD $)	12 Months Ended
	Nov. 30, 2014	Nov. 30, 2013
Options Outstanding at beginning of period (in shares)	143,000	163,000
Options Outstanding at beginning of period (in dollars per share)	$ 9	$ 9.16
Granted (in shares)	19,000	14,000
Granted (in dollars per share)	$ 6.10	$ 6.40
Exercised (in shares)	(2,000)	(9,000)
Exercised (in dollars per share)	$ 3.88	$ 5.15
Exercised	$ 4,020	$ 13,970
Options Outstanding at end of Period (in shares)	160,000	143,000
Options Outstanding at end of Period (in dollars per share)	$ 8.72	$ 9
Options Outstanding at end of Period	5 years 51 days	5 years 259 days
Options Outstanding at end of Period	15,400
Options Exercisable at end of Period (in shares)	155,000	143,000
Options Exercisable at end of Period (in dollars per share)	$ 8.81	$ 9
Options Exercisable at end of Period	5 years 98 days	5 years 259 days
Options Exercisable at end of Period	$ 15,400	$ 48,400
Options Expired or Forfeited (in shares)		(25,000)
Options Expired or Forfeited (in dollars per share)		$ 10.04