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Business Segment Information Revenue by Major Customer (Details)
 12 Months Ended
Oct. 31, 2014
Oct. 31, 2013
Revenue, Major Customer [Line Items]    
Concentration Risk, Percentage   10.00%us-gaap_ConcentrationRiskPercentage1
Sales [Member] | Chrysler [Member]    
Revenue, Major Customer [Line Items]    
Concentration Risk, Percentage 13.90%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_SalesMember
/ us-gaap_MajorCustomersAxis
= shlo_ChryslerMember		 15.60%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_SalesMember
/ us-gaap_MajorCustomersAxis
= shlo_ChryslerMember
Sales [Member] | General Motors [Member]    
Revenue, Major Customer [Line Items]    
Concentration Risk, Percentage 16.40%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_SalesMember
/ us-gaap_MajorCustomersAxis
= shlo_GeneralMotorsMember		 20.90%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_SalesMember
/ us-gaap_MajorCustomersAxis
= shlo_GeneralMotorsMember