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Fair Value Measurements (Details) (USD $)
In Thousands, unless otherwise specified
Mar. 31, 2015
Dec. 31, 2014
Securities available for sale:    
Available-for-sale Securities, Fair Value Disclosure $ 240,111us-gaap_AvailableForSaleSecurities $ 236,108us-gaap_AvailableForSaleSecurities
Fair Value, Inputs, Level 1 [Member]    
Securities available for sale:    
Available-for-sale Securities, Fair Value Disclosure 5,192us-gaap_AvailableForSaleSecurities
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/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel1Member
Fair Value, Inputs, Level 2 [Member]    
Securities available for sale:    
Available-for-sale Securities, Fair Value Disclosure 234,919us-gaap_AvailableForSaleSecurities
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel2Member		 230,893us-gaap_AvailableForSaleSecurities
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel2Member
Fair Value, Inputs, Level 3 [Member]    
Securities available for sale:    
Available-for-sale Securities, Fair Value Disclosure 0us-gaap_AvailableForSaleSecurities
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel3Member		 0us-gaap_AvailableForSaleSecurities
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel3Member
US Treasury Securities [Member]    
Securities available for sale:    
Available-for-sale Securities, Fair Value Disclosure 5,192us-gaap_AvailableForSaleSecurities
/ us-gaap_UnderlyingAssetClassAxis
= us-gaap_USTreasurySecuritiesMember		 5,215us-gaap_AvailableForSaleSecurities
/ us-gaap_UnderlyingAssetClassAxis
= us-gaap_USTreasurySecuritiesMember
US Treasury Securities [Member] | Fair Value, Inputs, Level 1 [Member]    
Securities available for sale:    
Available-for-sale Securities, Fair Value Disclosure 5,192us-gaap_AvailableForSaleSecurities
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel1Member
/ us-gaap_UnderlyingAssetClassAxis
= us-gaap_USTreasurySecuritiesMember		 5,215us-gaap_AvailableForSaleSecurities
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel1Member
/ us-gaap_UnderlyingAssetClassAxis
= us-gaap_USTreasurySecuritiesMember
US Treasury Securities [Member] | Fair Value, Inputs, Level 2 [Member]    
Securities available for sale:    
Available-for-sale Securities, Fair Value Disclosure 0us-gaap_AvailableForSaleSecurities
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel2Member
/ us-gaap_UnderlyingAssetClassAxis
= us-gaap_USTreasurySecuritiesMember		 0us-gaap_AvailableForSaleSecurities
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel2Member
/ us-gaap_UnderlyingAssetClassAxis
= us-gaap_USTreasurySecuritiesMember
US Treasury Securities [Member] | Fair Value, Inputs, Level 3 [Member]    
Securities available for sale:    
Available-for-sale Securities, Fair Value Disclosure 0us-gaap_AvailableForSaleSecurities
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel3Member
/ us-gaap_UnderlyingAssetClassAxis
= us-gaap_USTreasurySecuritiesMember		 0us-gaap_AvailableForSaleSecurities
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel3Member
/ us-gaap_UnderlyingAssetClassAxis
= us-gaap_USTreasurySecuritiesMember
US Government and Government Agencies and Authorities [Member]    
Securities available for sale:    
Available-for-sale Securities, Fair Value Disclosure 76,027us-gaap_AvailableForSaleSecurities
/ us-gaap_UnderlyingAssetClassAxis
= us-gaap_USTreasuryAndGovernmentMember		 74,960us-gaap_AvailableForSaleSecurities
/ us-gaap_UnderlyingAssetClassAxis
= us-gaap_USTreasuryAndGovernmentMember
US Government and Government Agencies and Authorities [Member] | Fair Value, Inputs, Level 1 [Member]    
Securities available for sale:    
Available-for-sale Securities, Fair Value Disclosure 0us-gaap_AvailableForSaleSecurities
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel1Member
/ us-gaap_UnderlyingAssetClassAxis
= us-gaap_USTreasuryAndGovernmentMember		 0us-gaap_AvailableForSaleSecurities
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel1Member
/ us-gaap_UnderlyingAssetClassAxis
= us-gaap_USTreasuryAndGovernmentMember
US Government and Government Agencies and Authorities [Member] | Fair Value, Inputs, Level 2 [Member]    
Securities available for sale:    
Available-for-sale Securities, Fair Value Disclosure 76,027us-gaap_AvailableForSaleSecurities
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel2Member
/ us-gaap_UnderlyingAssetClassAxis
= us-gaap_USTreasuryAndGovernmentMember		 74,960us-gaap_AvailableForSaleSecurities
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel2Member
/ us-gaap_UnderlyingAssetClassAxis
= us-gaap_USTreasuryAndGovernmentMember
US Government and Government Agencies and Authorities [Member] | Fair Value, Inputs, Level 3 [Member]    
Securities available for sale:    
Available-for-sale Securities, Fair Value Disclosure 0us-gaap_AvailableForSaleSecurities
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel3Member
/ us-gaap_UnderlyingAssetClassAxis
= us-gaap_USTreasuryAndGovernmentMember		 0us-gaap_AvailableForSaleSecurities
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel3Member
/ us-gaap_UnderlyingAssetClassAxis
= us-gaap_USTreasuryAndGovernmentMember
Mortgage Backed Securities, Other [Member]    
Securities available for sale:    
Available-for-sale Securities, Fair Value Disclosure 158,253us-gaap_AvailableForSaleSecurities
/ us-gaap_UnderlyingAssetClassAxis
= us-gaap_MortgageBackedSecuritiesOtherMember		 155,303us-gaap_AvailableForSaleSecurities
/ us-gaap_UnderlyingAssetClassAxis
= us-gaap_MortgageBackedSecuritiesOtherMember
Mortgage Backed Securities, Other [Member] | Fair Value, Inputs, Level 1 [Member]    
Securities available for sale:    
Available-for-sale Securities, Fair Value Disclosure 0us-gaap_AvailableForSaleSecurities
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel1Member
/ us-gaap_UnderlyingAssetClassAxis
= us-gaap_MortgageBackedSecuritiesOtherMember		 0us-gaap_AvailableForSaleSecurities
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel1Member
/ us-gaap_UnderlyingAssetClassAxis
= us-gaap_MortgageBackedSecuritiesOtherMember
Mortgage Backed Securities, Other [Member] | Fair Value, Inputs, Level 2 [Member]    
Securities available for sale:    
Available-for-sale Securities, Fair Value Disclosure 158,253us-gaap_AvailableForSaleSecurities
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel2Member
/ us-gaap_UnderlyingAssetClassAxis
= us-gaap_MortgageBackedSecuritiesOtherMember		 155,303us-gaap_AvailableForSaleSecurities
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel2Member
/ us-gaap_UnderlyingAssetClassAxis
= us-gaap_MortgageBackedSecuritiesOtherMember
Mortgage Backed Securities, Other [Member] | Fair Value, Inputs, Level 3 [Member]    
Securities available for sale:    
Available-for-sale Securities, Fair Value Disclosure 0us-gaap_AvailableForSaleSecurities
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel3Member
/ us-gaap_UnderlyingAssetClassAxis
= us-gaap_MortgageBackedSecuritiesOtherMember		 0us-gaap_AvailableForSaleSecurities
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel3Member
/ us-gaap_UnderlyingAssetClassAxis
= us-gaap_MortgageBackedSecuritiesOtherMember
Equity Securities Others [Member]    
Securities available for sale:    
Available-for-sale Securities, Fair Value Disclosure 639us-gaap_AvailableForSaleSecurities
/ us-gaap_UnderlyingAssetClassAxis
= shbi_EquitySecuritiesOthersMember		 630us-gaap_AvailableForSaleSecurities
/ us-gaap_UnderlyingAssetClassAxis
= shbi_EquitySecuritiesOthersMember
Equity Securities Others [Member] | Fair Value, Inputs, Level 1 [Member]    
Securities available for sale:    
Available-for-sale Securities, Fair Value Disclosure 0us-gaap_AvailableForSaleSecurities
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel1Member
/ us-gaap_UnderlyingAssetClassAxis
= shbi_EquitySecuritiesOthersMember		 0us-gaap_AvailableForSaleSecurities
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel1Member
/ us-gaap_UnderlyingAssetClassAxis
= shbi_EquitySecuritiesOthersMember
Equity Securities Others [Member] | Fair Value, Inputs, Level 2 [Member]    
Securities available for sale:    
Available-for-sale Securities, Fair Value Disclosure 639us-gaap_AvailableForSaleSecurities
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel2Member
/ us-gaap_UnderlyingAssetClassAxis
= shbi_EquitySecuritiesOthersMember		 630us-gaap_AvailableForSaleSecurities
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel2Member
/ us-gaap_UnderlyingAssetClassAxis
= shbi_EquitySecuritiesOthersMember
Equity Securities Others [Member] | Fair Value, Inputs, Level 3 [Member]    
Securities available for sale:    
Available-for-sale Securities, Fair Value Disclosure $ 0us-gaap_AvailableForSaleSecurities
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel3Member
/ us-gaap_UnderlyingAssetClassAxis
= shbi_EquitySecuritiesOthersMember		 $ 0us-gaap_AvailableForSaleSecurities
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= us-gaap_FairValueInputsLevel3Member
/ us-gaap_UnderlyingAssetClassAxis
= shbi_EquitySecuritiesOthersMember