Note 12 - Option Activity (Details) - USD ($)	12 Months Ended
	Nov. 30, 2015	Nov. 30, 2014
Options Outstanding at beginning of period (in shares)	160,000	143,000
Options Outstanding at beginning of period (in dollars per share)	$ 8.72	$ 9
Granted (in shares)	14,000	19,000
Granted (in dollars per share)	$ 4.70	$ 6.10
Options Outstanding at end of Period (in shares)	174,000	160,000
Options Outstanding at end of Period (in dollars per share)	$ 8.39	$ 8.72
Options Outstanding at end of Period	4 years 248 days	5 years 51 days
Options Exercisable at end of Period (in shares)	169,000	155,000
Options Exercisable at end of Period (in dollars per share)	$ 8.47	$ 8.81
Options Exercisable at end of Period	4 years 208 days	5 years 98 days
Exercised (in shares)		(2,000)
Exercised (in dollars per share)		$ 3.88
Exercised		$ 4,020
Options Outstanding at end of Period	4 years 248 days	5 years 51 days
Options Outstanding at end of Period		$ 15,400
Options Exercisable at end of Period		$ 15,400