Consolidated Statement of Shareholders' Equity (USD $) In Thousands, unless otherwise specified	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
Balance at Nov. 30, 2012	$ 1,248,810	$ 260	$ 200	$ 442,474	$ 811,172	$ (5,296)
Activity 12/1/11 - 5/31/12:
Net income	35,953				35,953
Comprehensive income	329					329
Cash dividend declared ($0.22 per share)	(10,229)				(10,229)
Exercise of stock options	51	1		50
Reacquisition of previously issued common stock	(259)			(259)
Excess tax benefits from stock compensation	(60)			(60)
Stock-based compensation	1,088			1,088
Balance at May. 31, 2013	$ 1,275,683	$ 261	$ 200	$ 443,293	$ 836,896	$ (4,967)