Note 11 - Equity Incentive Plan and Stock Based Compensation (Details) - Option Activity (USD $)	12 Months Ended
	Nov. 30, 2013	Nov. 30, 2012
Option Activity [Abstract]
Options outstanding at beginning of period	163,000	153,000
Options outstanding at beginning of period (in Dollars per share)	$ 9.16	$ 9.32
Granted	14,000	14,000
Granted (in Dollars per share)	$ 6.40	$ 6.75
Exercised	(9,000)	(2,000)
Exercised (in Dollars per share)	$ 5.15	$ 4.56
Exercised (in Dollars)	$ 13,970	$ 5,660
Options Expired or Forfeited	(25,000)	(2,000)
Options Expired or Forfeited (in Dollars per share)	$ 10.04	$ 8.66
Options outstanding at end of period	143,000	163,000
Options outstanding at end of period (in Dollars per share)	$ 9.00	$ 9.16
Options outstanding at end of period	5 years 259 days	5 years 219 days
Options outstanding at end of period (in Dollars)	48,400	34,700
Options exercisable at end of period	143,000	163,000
Options exercisable at end of period (in Dollars per share)	$ 9.00	$ 9.16
Options exercisable at end of period	5 years 259 days	5 years 219 days
Options exercisable at end of period (in Dollars)	$ 48,400	$ 34,700