Accumulated Other Comprehensive Loss Amounts Reclassified from Accumulated Other Comprehensive Income (Loss) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Oct. 31, 2014	Jul. 31, 2014	Apr. 30, 2014	Jan. 31, 2014	Oct. 31, 2013	Jul. 31, 2013	Apr. 30, 2013	Jan. 31, 2013	Oct. 31, 2014		Oct. 31, 2013
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Income tax benefit	$ 1,389	$ (335)	$ (3,620)	$ (2,181)	$ (3,605)	$ (2,213)	$ (3,686)	$ (1,101)	$ (4,747)		$ (10,605)
Reclassification out of Accumulated Other Comprehensive Income | Pension and Post Retirement Plan Liability
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Interest costs									(3,787)	[1]
Return on plan assets									4,281	[1]
Net actuarial loss									(1,115)	[1]
Total before taxes									(621)
Income tax benefit									235
Net of taxes									(386)
Reclassification out of Accumulated Other Comprehensive Income | Marketable Securities Adjustment
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Total before taxes									365	[2]
Income tax benefit									(128)	[2]
Net of taxes									$ 237	[2]

[1] These accumulated other comprehensive income components are included in the computation of net periodic benefit cost. See Note 11- Employee Benefit Plans for further information.

[2] These accumulated other comprehensive income components are included in the computation of the gain on sale of marketable securities. See Note 17 - Related Party Transactions.