Consolidated Statement of Stockholders' Equity (USD $) In Thousands, except Share data, unless otherwise specified	Total	Common Stock	Grantor Stock Ownership Trust	Treasury Stock	Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive Loss
Balance at Nov. 30, 2009	$ 707,224	$ 115,120	$ (122,017)	$ (930,850)	$ 860,772	$ 806,443	$ (22,244)
Balance, Shares at Nov. 30, 2009		115,120,000	(11,229,000)	(27,047,000)
Comprehensive loss:
Net loss	(69,368)					(69,368)
Postretirement benefits adjustment	(413)						(413)
Total comprehensive loss	(69,781)
Dividends on common stock	(19,223)					(19,223)
Employee stock options and other, Value	(2,103)	(29)			(2,074)
Employee stock options and other, Shares	28,281	29,000
Restricted stock awards, Value	0		307		(307)
Restricted stock amortization	2,297				2,297
Stock-based compensation	5,777				5,777
Cash-settled stock appreciation rights exchange	2,348				2,348
Grantor stock ownership trust, Value	1,483		1,268		215
Grantor stock ownership trust, Shares			146,000
Treasury stock, Value	(350)			(693)	(343)
Treasury stock, Shares				(48,000)
Balance at Nov. 30, 2010	631,878	115,149	(120,442)	(931,543)	873,519	717,852	(22,657)
Balance, Shares at Nov. 30, 2010		115,149,000	(11,083,000)	(27,095,000)
Comprehensive loss:
Net loss	(178,768)					(178,768)
Postretirement benefits adjustment	(3,495)						(3,495)
Total comprehensive loss	(182,263)
Dividends on common stock	(19,240)					(19,240)
Employee stock options and other, Value	(2,432)	(22)			(2,410)
Employee stock options and other, Shares	0	22,000
Restricted stock amortization	2,154				2,154
Forfeited restricted stock, Value	0			(794)	794
Forfeited restricted stock, Shares				(119,000)
Stock-based compensation	5,900				5,900
Grantor stock ownership trust, Value	1,796		2,383		(587)
Grantor stock ownership trust, Shares			199,000
Treasury stock, Shares	(27,214,174)
Balance at Nov. 30, 2011	442,657	115,171	(118,059)	(932,337)	884,190	519,844	(26,152)
Balance, Shares at Nov. 30, 2011		115,171,000	(10,884,000)	(27,214,000)
Comprehensive loss:
Net loss	(58,953)					(58,953)
Postretirement benefits adjustment	(1,806)						(1,806)
Total comprehensive loss	(60,759)
Dividends on common stock	(10,599)					(10,599)
Employee stock options and other, Value	(104)	(7)			(97)
Employee stock options and other, Shares	7,494	7,000
Restricted stock awards, Value	0		2,253		(2,253)
Restricted stock awards, Shares			208,000
Restricted stock amortization	1,708				1,708
Stock-based compensation	5,005				5,005
Grantor stock ownership trust, Value	489		657		(168)
Grantor stock ownership trust, Shares			60,000
Treasury stock, Value	(1,799)			(1,799)
Treasury stock, Shares	(27,340,468)			(126,000)
Balance at Nov. 30, 2012	$ 376,806	$ 115,178	$ (115,149)	$ (934,136)	$ 888,579	$ 450,292	$ (27,958)
Balance, Shares at Nov. 30, 2012		115,178,000	(10,616,000)	(27,340,000)