Stock-Based Compensation (Tables)

9 Months Ended

Aug. 31, 2012

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Schedule of Outstanding and Exercisable Stock Options

The following table summarizes the stock options outstanding and stock options exercisable as of August 31, 2012, as well as stock options activity during the nine months then ended:

	Options		Weighted Average Exercise Price
Options outstanding at beginning of period	10,160,396		$	21.27
Granted	30,000		9.08
Exercised	—		—
Cancelled	(50,946	)	12.18
Options outstanding at end of period	10,139,450		$	21.28
Options exercisable at end of period	7,286,213		$	26.16