Consolidated Statement of Shareholders' Equity (Unaudited) (USD $) In Thousands	Total	Class A Common Stock $.01 Par Value	Class B Common Stock $.01 Par Value	Additional Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive Loss
Beginning Balance at Nov. 30, 2010	$ 1,187,177	$ 275	$ 203	$ 481,154	$ 712,099	$ (6,554)
Comprehensive income
Net income	33,308				33,308
Loss on currency translation, including tax benefit of $0	(1)					(1)
Interest expense, net of income taxes of $177	273					273
Total comprehensive income	33,580
Exercise of stock options	51			51
Cash dividend declared ($0.18 per share)	(8,583)				(8,583)
Reacquisition of previously issued common stock	(12,259)	(4)		(12,255)
Conversion of Class B Common Stock to Class A Common Stock		1	(1)
Income tax benefit related to stock-based compensation	(276)			(276)
Stock-based compensation	630			630
Ending Balance at May. 31, 2011	$ 1,200,320	$ 272	$ 202	$ 469,304	$ 736,824	$ (6,282)