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Acquisitions Finnveden Intangibles (Details) (Customer Relationships [Member], Finnveden [Member], USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Oct. 31, 2014
Jun. 30, 2014
Customer Relationships [Member] | Finnveden [Member]
    
Business Acquisition [Line Items]    
Business Combinations, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangibles Deductible for Tax Purposes   $ 1,136shlo_BusinessCombinationsRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangiblesDeductibleForTaxPurposes
/ us-gaap_BusinessAcquisitionAxis
= shlo_FinnvedenMember
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= us-gaap_CustomerRelationshipsMember
Finite-Lived Intangible Asset, Useful Life 10 years