STOCKHOLDERS' EQUITY (Details 2) (USD $)	9 Months Ended
	Aug. 31, 2013	Aug. 31, 2012	Nov. 30, 2012	Nov. 30, 2011
Options Outstanding and Exercisable
Exercise Price (in dollars per share)	$ 4.03	$ 3.86	$ 3.96	$ 3.73
Number of shares	775,000
Weighted-Average Remaining Contractual Life	1 year 7 months 6 days
Stock option activity
Outstanding at the beginning of the period (in shares)	796,794	868,290
Exercised (in shares)	(21,794)	(20,000)
Forfeited / Expired (in shares)		(20,000)
Outstanding at the end of the period (in shares)	775,000	828,290
2000 Director Plan
Stock option activity
Outstanding at the beginning of the period (in shares)	21,794	93,290
Exercised (in shares)	(21,794)	(20,000)
Forfeited / Expired (in shares)		(20,000)
Outstanding at the end of the period (in shares)		53,290
2004 Stock Incentive Plan
Stock option activity
Outstanding at the beginning of the period (in shares)			775,000	775,000
Outstanding at the end of the period (in shares)	775,000	775,000	775,000	775,000
Restated Plan
Options Outstanding and Exercisable
Stock options outstanding (in shares)	0
$1.02
Options Outstanding and Exercisable
Exercise Price (in dollars per share)	$ 1.02
Number of shares	100,000
Weighted-Average Remaining Contractual Life	2 years 6 months
$1.58 - $1.63
Options Outstanding and Exercisable
Exercise price, low end of range (in dollars per share)	$ 1.58
Exercise price, high end of range (in dollars per share)	$ 1.63
Number of shares	225,000
Weighted-Average Remaining Contractual Life	1 year
$5.91
Options Outstanding and Exercisable
Exercise Price (in dollars per share)	$ 5.91
Number of shares	450,000
Weighted-Average Remaining Contractual Life	1 year 9 months 18 days