Consolidated Statements of Cash Flows (USD $) In Thousands	9 Months Ended
	Aug. 31, 2011	Aug. 31, 2010
OPERATING ACTIVITIES
Net income	$ 42,958	$ 39,311
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	57,165	55,694
Stock-based compensation	1,066	1,392
Amortization of financing costs	1,030	457
Deferred income taxes	20,063	3,519
Loss from equity investments	2,816	1,634
Impairment of long-lived assets, non-cash	3,119	1,061
Other, net	428	33
Changes in operating assets and liabilities:
Receivables, net	(11,690)	3,543
Inventories, prepaid expenses and other assets	(12,992)	(13,495)
Accounts payable and other liabilities	7,926	(2,301)
Deferred income	34,128	21,907
Income taxes	6,582	(3,546)
Net cash provided by operating activities	152,599	109,209
INVESTING ACTIVITIES
Capital expenditures	(55,134)	(74,744)
Equity investments and advances to affiliates	(37,871)	(21,354)
Decrease in restricted cash	1,002	9,143
Proceeds from short-term investments		400
Purchases of short-term investments		(200)
Other, net	(48)
Net cash used in investing activities	(92,051)	(86,755)
FINANCING ACTIVITIES
Payment under credit facility	(82,000)	(75,000)
Payment of long-term debt	(1,609)	(3,640)
Proceeds of long-term debt	65,000
Deferred financing fees	(439)
Exercise of Class A common stock options	51
Cash dividend paid	(8,585)	(7,706)
Reacquisition of previously issued common stock	(21,253)	(5,455)
Net cash used in financing activities	(48,835)	(91,801)
Net (decrease) increase in cash and cash equivalents	11,713	(69,347)
Cash and cash equivalents at beginning of period	84,166	158,572
Cash and cash equivalents at end of period	$ 95,879	$ 89,225