Asset Impairment and Restructuring Charges (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended	12 Months Ended		9 Months Ended
	Oct. 31, 2013	Oct. 31, 2014	Oct. 31, 2013	Jul. 31, 2014
Restructuring Cost and Reserve [Line Items]
Recovery of Impairment Charge		$ 4,026	$ (18)
Asset Impairment Charges, net	(18)
Anniston [Member]
Restructuring Cost and Reserve [Line Items]
Asset Impairment Charges, net	(483)
Mansfield Blanking Division [Member]
Restructuring Cost and Reserve [Line Items]
Recovery of Impairment Charge			96	4,026
Liverpool Stamping Division [Member]
Restructuring Cost and Reserve [Line Items]
Recovery of Impairment Charge			$ 369