Earnings per Share (Details) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	May 31, 2014	May 31, 2013	May 31, 2014	May 31, 2013
Weighted average common shares outstanding:
Shares used in basic EPS calculation	68,216	65,888	68,015	65,840
Effect of dilutive securities:
Restricted stock units	481	530	715	740
Stock options and other stock-based awards	0	3	0	4
Shares used in diluted EPS calculation	68,697	66,421	68,730	66,584