This element represents the amount of recognized equity-based compensation during the period, that is, the amount recognized as expense in the income statement (or as asset if compensation is capitalized). Alternate captions include the words "stock-based compensation".

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- Definition

Amount of paid and unpaid common stock dividends declared with the form of settlement in cash.

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- Definition

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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- Definition

Total of all stockholders' equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity which are attributable to the parent. The amount of the economic entity's stockholders' equity attributable to the parent excludes the amount of stockholders' equity which is allocable to that ownership interest in subsidiary equity which is not attributable to the parent (noncontrolling interest, minority interest). This excludes temporary equity and is sometimes called permanent equity.

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- Definition

Equity impact of the cost of common and preferred stock that were repurchased during the period. Recorded using the cost method.

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Stockholders' Equity (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Feb. 28, 2015	Feb. 28, 2014	Nov. 30, 2014
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	$ 1,595,910us-gaap_StockholdersEquity
Net income (loss)	7,799us-gaap_NetIncomeLoss	10,563us-gaap_NetIncomeLoss
Dividends on common stock	(2,299)us-gaap_DividendsCommonStockCash
Stock-based compensation	3,181
Treasury Stock, Value, Acquired, Cost Method	(21)
Ending balance	1,604,570us-gaap_StockholdersEquity
Common Stock
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance			115,387
Ending balance	115,387		115,387
Paid-in Capital
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	668,857
Stock-based compensation	3,181
Ending balance	672,038
Retained Earnings
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	1,391,256
Net income (loss)	7,799
Dividends on common stock	(2,299)
Ending balance	1,396,756
Accumulated Other Comprehensive Income
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance			(21,008)
Ending balance	(21,008)		(21,008)
Trust for Benefit of Employees [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance			(112,106)
Ending balance	(112,106)		(112,106)
Treasury Stock
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	(446,476)
Treasury Stock, Value, Acquired, Cost Method	(21)
Ending balance	$ (446,497)