Asset Impairment and Recoveries (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended	6 Months Ended	3 Months Ended	6 Months Ended
Apr. 30, 2014	Apr. 30, 2013	Apr. 30, 2014	Apr. 30, 2013	Apr. 30, 2014 Mansfield Blanking Division [Member]	Jan. 31, 2014 Mansfield Blanking Division [Member]	Apr. 30, 2013 Mansfield Blanking Division [Member]
Restructuring Cost and Reserve [Line Items]
Recovery of Impairment Charge	$ 2,906	$ 0	$ 4,026	$ 7	$ 2,906	$ 4,026	$ 7

Recovery of Impairment Charge - amount expensed in prior periods that has been recovered

No definition available.

Name:	shlo_RecoveryOfImpairmentCharge
Namespace Prefix:	shlo_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration