The portion of consolidated profit or loss for the period, net of income taxes, which is attributable to the parent. If the entity does not present consolidated financial statements, the amount of profit or loss for the period, net of income taxes.

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The after-tax amount of the change in the additional pension liability not yet recognized pursuant to FAS 87 par 37 and 38 as a net periodic pension cost. If the additional pension liability required to be recognized exceeds the unrecognized prior service costs, then the excess (which is the net loss not yet recognized as net periodic pension cost) is to be recorded as a reduction of other comprehensive income, before adjusting for tax effects. If in a subsequent measurement, the amount of minimum liability is eliminated or adjusted, this adjustment is offset against other comprehensive income in Accumulated Comprehensive Income. This line also includes changes in an entity's share of an equity investee's increase (decrease) in additional pension liability not yet recognized as a net periodic pension cost. Eliminated upon adoption of FAS 158.

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- Definition

Appreciation or loss in value (before reclassification adjustment) of the total of unsold securities during the period being reported on, net of tax. Reclassification adjustments include: (1) the unrealized holding gain or loss, net of tax, at the date of the transfer for a debt security from the held-to-maturity category transferred into the available-for-sale category. Also includes the unrealized gain or loss at the date of transfer for a debt security from the available-for-sale category transferred into the held-to-maturity category; (2) the unrealized gains or losses realized upon the sale of securities, after tax; and (3) the unrealized gains or losses realized upon the write-down of securities, after tax.

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Accumulated Other Comprehensive Loss and Total Comprehensive Income (Loss) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Oct. 31, 2011	Jul. 31, 2011	Apr. 30, 2011	Jan. 31, 2011	Oct. 31, 2010	Jul. 31, 2010	Apr. 30, 2010	Jan. 31, 2010	Oct. 31, 2011	Oct. 31, 2010	Oct. 31, 2009
Accumulated Other Comprehensive Loss and Total Comprehensive Income (Loss)
Net income loss per Consolidated Statements of Operations	$ 15,043	$ 42,108	$ (20,773)	$ 3,417	$ 50,479	$ 27,302	$ (40,401)	$ (40,754)	$ 39,795	$ (3,374)	$ (755,825)
Changes in pension liability, net of tax benefit provision									(1,934)	1,986	(2,988)
Change in fair value of available-for-sale securities, net of tax provision									(192)	74	26
Total comprehensive income loss									37,669	(1,314)	(758,787)
Tax benefit recognized in total comprehensive loss											1,975
Accumulated other comprehensive income loss net of tax (Textual Abstract)
Accumulated other comprehensive loss	$ 2,902				$ 577				$ 2,902	$ 577