STOCKHOLDERS' EQUITY (Details 4) (USD $)	3 Months Ended		9 Months Ended
	Aug. 31, 2013	Aug. 31, 2012	Aug. 31, 2013	Aug. 31, 2012
Total Shares
Shares issued upon exercise of options			21,794	20,000
Restricted stock and RSUs
Total Shares
Outstanding at the beginning of the period (in shares)			3,978,723	3,007,338
Granted (in shares)			631,059	2,272,176
Issued (in shares)	(407,567)	(557,056)	(1,385,485)	(1,101,883)
Cancelled (in shares)			(426,749)	(523,744)
Forfeited (in shares)			(3,031)	(29,193)
Outstanding at the end of the period (in shares)	2,794,517	3,624,694	2,794,517	3,624,694
Shares withdrawn, cancelled or forfeited in period	187,738	316,013	429,779	552,937
Restricted Shares
Total Shares
Outstanding at the beginning of the period (in shares)			1,265,118	464,610
Granted (in shares)				670,781
Issued (in shares)			(310,320)	(86,727)
Outstanding at the end of the period (in shares)	954,798	1,048,664	954,798	1,048,664
Weighted-Average Grant-Date Fair Value
Outstanding at the beginning of the period (in dollars per share)			$ 0.90	$ 1.30
Granted (in dollars per share)				$ 0.64
Issued (in dollars per share)			$ 0.92	$ 1.65
Outstanding at the end of the period (in dollars per share)	$ 0.90	$ 0.85	$ 0.90	$ 0.85
Restricted Stock Units
Total Shares
Outstanding at the beginning of the period (in shares)			2,713,605	2,542,728
Granted (in shares)			631,059	1,601,395
Issued (in shares)			(1,075,165)	(1,015,156)
Cancelled (in shares)			(426,749)	(523,744)
Forfeited (in shares)			(3,031)	(29,193)
Outstanding at the end of the period (in shares)	1,839,719	2,576,030	1,839,719	2,576,030
Weighted-Average Grant-Date Fair Value
Outstanding at the beginning of the period (in dollars per share)			$ 0.89	$ 0.98
Granted (in dollars per share)			$ 1.02	$ 0.69
Issued (in dollars per share)			$ 0.89	$ 0.83
Cancelled (in dollars per share)			$ 0.89	$ 0.88
Forfeited (in dollars per share)			$ 0.70	$ 0.80
Outstanding at the end of the period (in dollars per share)	$ 0.93	$ 0.88	$ 0.93	$ 0.88
Options
Total Shares
Shares issued upon exercise of options	21,794		21,794