EARNINGS PER SHARE (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Aug. 31, 2013	Aug. 31, 2012	Aug. 31, 2013	Aug. 31, 2012
Numerator:
Net income (loss) and comprehensive (loss) income	$ (287)	$ 1,390	$ (5,502)	$ 3,602
Denominator:
Weighted average common shares outstanding	67,413,000	65,676,000	67,038,000	65,319,000
Income (loss) per common share - basic
Net (loss) income and comprehensive (loss) income (in dollars per share)	$ 0.00	$ 0.02	$ (0.08)	$ 0.06
Numerator:
Net income (loss) and comprehensive (loss) income	$ (287)	$ 1,390	$ (5,502)	$ 3,602
Denominator:
Weighted average common shares outstanding	67,413,000	65,676,000	67,038,000	65,319,000
Effect of dilutive securities:
Restricted shares, RSU's and options (in shares)		1,080,000		954,000
Dilutive potential common shares	67,413,000	66,756,000	67,038,000	66,273,000
Income (loss) per common share - dilutive
Net income (loss) and comprehensive (loss) income (in dollars per share)	$ 0.00	$ 0.02	$ (0.08)	$ 0.05
Anti-dilutive securities excluded from calculation of diluted loss per share (in shares)	3,569,517	728,290	3,569,517	1,178,852
Shares Reserved For Future Issuance
Stock options granted under the incentive plans reserved for future issuance (in shares)	775,000		775,000
Shares of common stock issuable upon the vesting of RSUs	1,839,719		1,839,719
Shares of common stock available for future issuance under the 2004 Stock Incentive Plan	3,499,220		3,499,220