XML 44 R36.htm IDEA: XBRL DOCUMENT v2.4.1.9
Loans and Allowance for Credit Losses (Details 2) (USD $)
In Thousands, unless otherwise specified
 3 Months Ended 12 Months Ended
Mar. 31, 2015
Dec. 31, 2014
Impaired Nonaccrual Loans [Member]    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Unpaid principal balance $ 18,552us-gaap_ImpairedFinancingReceivableUnpaidPrincipalBalance
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpairedNonaccrualLoansMember		 $ 20,145us-gaap_ImpairedFinancingReceivableUnpaidPrincipalBalance
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpairedNonaccrualLoansMember
Recorded investment with no allowance 9,915us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpairedNonaccrualLoansMember		 10,175us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpairedNonaccrualLoansMember
Recorded investment with an allowance 2,999us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpairedNonaccrualLoansMember		 3,292us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpairedNonaccrualLoansMember
Related allowance 785us-gaap_ImpairedFinancingReceivableRelatedAllowance
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpairedNonaccrualLoansMember		 903us-gaap_ImpairedFinancingReceivableRelatedAllowance
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpairedNonaccrualLoansMember
Average recorded investment 12,998us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpairedNonaccrualLoansMember		 12,765us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpairedNonaccrualLoansMember
Interest income recognized 12,998us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethod
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpairedNonaccrualLoansMember		 15,466us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethod
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpairedNonaccrualLoansMember
Impaired Nonaccrual Loans [Member] | Construction Loans [Member]    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Unpaid principal balance 12,188us-gaap_ImpairedFinancingReceivableUnpaidPrincipalBalance
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpairedNonaccrualLoansMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConstructionLoansMember		 9,277us-gaap_ImpairedFinancingReceivableUnpaidPrincipalBalance
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpairedNonaccrualLoansMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConstructionLoansMember
Recorded investment with no allowance 5,681us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpairedNonaccrualLoansMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConstructionLoansMember		 6,045us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpairedNonaccrualLoansMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConstructionLoansMember
Recorded investment with an allowance 2,904us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpairedNonaccrualLoansMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConstructionLoansMember		 0us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpairedNonaccrualLoansMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConstructionLoansMember
Related allowance 690us-gaap_ImpairedFinancingReceivableRelatedAllowance
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpairedNonaccrualLoansMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConstructionLoansMember		 0us-gaap_ImpairedFinancingReceivableRelatedAllowance
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpairedNonaccrualLoansMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConstructionLoansMember
Average recorded investment 7,861us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpairedNonaccrualLoansMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConstructionLoansMember		 7,364us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpairedNonaccrualLoansMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConstructionLoansMember
Interest income recognized 7,861us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethod
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpairedNonaccrualLoansMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConstructionLoansMember		 7,739us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethod
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpairedNonaccrualLoansMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConstructionLoansMember
Impaired Nonaccrual Loans [Member] | Residential Real Estate [Member]    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Unpaid principal balance 2,178us-gaap_ImpairedFinancingReceivableUnpaidPrincipalBalance
/ us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis
= us-gaap_ResidentialRealEstateMember
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpairedNonaccrualLoansMember		 4,664us-gaap_ImpairedFinancingReceivableUnpaidPrincipalBalance
/ us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis
= us-gaap_ResidentialRealEstateMember
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpairedNonaccrualLoansMember
Recorded investment with no allowance 1,557us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment
/ us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis
= us-gaap_ResidentialRealEstateMember
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpairedNonaccrualLoansMember		 1,053us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment
/ us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis
= us-gaap_ResidentialRealEstateMember
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpairedNonaccrualLoansMember
Recorded investment with an allowance 95us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment
/ us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis
= us-gaap_ResidentialRealEstateMember
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpairedNonaccrualLoansMember		 2,982us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment
/ us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis
= us-gaap_ResidentialRealEstateMember
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpairedNonaccrualLoansMember
Related allowance 95us-gaap_ImpairedFinancingReceivableRelatedAllowance
/ us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis
= us-gaap_ResidentialRealEstateMember
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpairedNonaccrualLoansMember		 799us-gaap_ImpairedFinancingReceivableRelatedAllowance
/ us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis
= us-gaap_ResidentialRealEstateMember
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpairedNonaccrualLoansMember
Average recorded investment 2,276us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment
/ us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis
= us-gaap_ResidentialRealEstateMember
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpairedNonaccrualLoansMember		 2,681us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment
/ us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis
= us-gaap_ResidentialRealEstateMember
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpairedNonaccrualLoansMember
Interest income recognized 2,276us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethod
/ us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis
= us-gaap_ResidentialRealEstateMember
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpairedNonaccrualLoansMember		 3,322us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethod
/ us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis
= us-gaap_ResidentialRealEstateMember
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpairedNonaccrualLoansMember
Impaired Nonaccrual Loans [Member] | Commercial Real Estate [Member]    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Unpaid principal balance 3,994us-gaap_ImpairedFinancingReceivableUnpaidPrincipalBalance
/ us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis
= us-gaap_CommercialRealEstateMember
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpairedNonaccrualLoansMember		 4,703us-gaap_ImpairedFinancingReceivableUnpaidPrincipalBalance
/ us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis
= us-gaap_CommercialRealEstateMember
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpairedNonaccrualLoansMember
Recorded investment with no allowance 2,500us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment
/ us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis
= us-gaap_CommercialRealEstateMember
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpairedNonaccrualLoansMember		 2,842us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment
/ us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis
= us-gaap_CommercialRealEstateMember
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpairedNonaccrualLoansMember
Recorded investment with an allowance 0us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment
/ us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis
= us-gaap_CommercialRealEstateMember
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpairedNonaccrualLoansMember		 280us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment
/ us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis
= us-gaap_CommercialRealEstateMember
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpairedNonaccrualLoansMember
Related allowance 0us-gaap_ImpairedFinancingReceivableRelatedAllowance
/ us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis
= us-gaap_CommercialRealEstateMember
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpairedNonaccrualLoansMember		 100us-gaap_ImpairedFinancingReceivableRelatedAllowance
/ us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis
= us-gaap_CommercialRealEstateMember
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpairedNonaccrualLoansMember
Average recorded investment 2,689us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment
/ us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis
= us-gaap_CommercialRealEstateMember
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpairedNonaccrualLoansMember		 2,455us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment
/ us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis
= us-gaap_CommercialRealEstateMember
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpairedNonaccrualLoansMember
Interest income recognized 2,689us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethod
/ us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis
= us-gaap_CommercialRealEstateMember
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpairedNonaccrualLoansMember		 3,889us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethod
/ us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis
= us-gaap_CommercialRealEstateMember
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpairedNonaccrualLoansMember
Impaired Nonaccrual Loans [Member] | Commercial Loan [Member]    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Unpaid principal balance 63us-gaap_ImpairedFinancingReceivableUnpaidPrincipalBalance
/ us-gaap_FinancialInstrumentAxis
= us-gaap_CommercialLoanMember
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpairedNonaccrualLoansMember		 1,372us-gaap_ImpairedFinancingReceivableUnpaidPrincipalBalance
/ us-gaap_FinancialInstrumentAxis
= us-gaap_CommercialLoanMember
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpairedNonaccrualLoansMember
Recorded investment with no allowance 54us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment
/ us-gaap_FinancialInstrumentAxis
= us-gaap_CommercialLoanMember
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpairedNonaccrualLoansMember		 136us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment
/ us-gaap_FinancialInstrumentAxis
= us-gaap_CommercialLoanMember
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpairedNonaccrualLoansMember
Recorded investment with an allowance 0us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment
/ us-gaap_FinancialInstrumentAxis
= us-gaap_CommercialLoanMember
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpairedNonaccrualLoansMember		 5us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment
/ us-gaap_FinancialInstrumentAxis
= us-gaap_CommercialLoanMember
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpairedNonaccrualLoansMember
Related allowance 0us-gaap_ImpairedFinancingReceivableRelatedAllowance
/ us-gaap_FinancialInstrumentAxis
= us-gaap_CommercialLoanMember
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpairedNonaccrualLoansMember		 1us-gaap_ImpairedFinancingReceivableRelatedAllowance
/ us-gaap_FinancialInstrumentAxis
= us-gaap_CommercialLoanMember
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpairedNonaccrualLoansMember
Average recorded investment 49us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment
/ us-gaap_FinancialInstrumentAxis
= us-gaap_CommercialLoanMember
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpairedNonaccrualLoansMember		 141us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment
/ us-gaap_FinancialInstrumentAxis
= us-gaap_CommercialLoanMember
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpairedNonaccrualLoansMember
Interest income recognized 49us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethod
/ us-gaap_FinancialInstrumentAxis
= us-gaap_CommercialLoanMember
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpairedNonaccrualLoansMember		 437us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethod
/ us-gaap_FinancialInstrumentAxis
= us-gaap_CommercialLoanMember
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpairedNonaccrualLoansMember
Impaired Nonaccrual Loans [Member] | Consumer Loan [Member]    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Unpaid principal balance 129us-gaap_ImpairedFinancingReceivableUnpaidPrincipalBalance
/ us-gaap_FinancialInstrumentAxis
= us-gaap_ConsumerLoanMember
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpairedNonaccrualLoansMember		 129us-gaap_ImpairedFinancingReceivableUnpaidPrincipalBalance
/ us-gaap_FinancialInstrumentAxis
= us-gaap_ConsumerLoanMember
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpairedNonaccrualLoansMember
Recorded investment with no allowance 123us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment
/ us-gaap_FinancialInstrumentAxis
= us-gaap_ConsumerLoanMember
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpairedNonaccrualLoansMember		 99us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment
/ us-gaap_FinancialInstrumentAxis
= us-gaap_ConsumerLoanMember
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpairedNonaccrualLoansMember
Recorded investment with an allowance 0us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment
/ us-gaap_FinancialInstrumentAxis
= us-gaap_ConsumerLoanMember
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpairedNonaccrualLoansMember		 25us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment
/ us-gaap_FinancialInstrumentAxis
= us-gaap_ConsumerLoanMember
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpairedNonaccrualLoansMember
Related allowance 0us-gaap_ImpairedFinancingReceivableRelatedAllowance
/ us-gaap_FinancialInstrumentAxis
= us-gaap_ConsumerLoanMember
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpairedNonaccrualLoansMember		 3us-gaap_ImpairedFinancingReceivableRelatedAllowance
/ us-gaap_FinancialInstrumentAxis
= us-gaap_ConsumerLoanMember
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpairedNonaccrualLoansMember
Average recorded investment 123us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment
/ us-gaap_FinancialInstrumentAxis
= us-gaap_ConsumerLoanMember
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpairedNonaccrualLoansMember		 124us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment
/ us-gaap_FinancialInstrumentAxis
= us-gaap_ConsumerLoanMember
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpairedNonaccrualLoansMember
Interest income recognized 123us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethod
/ us-gaap_FinancialInstrumentAxis
= us-gaap_ConsumerLoanMember
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpairedNonaccrualLoansMember		 79us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethod
/ us-gaap_FinancialInstrumentAxis
= us-gaap_ConsumerLoanMember
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpairedNonaccrualLoansMember
Impaired Accruing TDRs [Member]    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Unpaid principal balance 16,644us-gaap_ImpairedFinancingReceivableUnpaidPrincipalBalance
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpairedAccruingRestructuredLoansMember		 16,674us-gaap_ImpairedFinancingReceivableUnpaidPrincipalBalance
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpairedAccruingRestructuredLoansMember
Recorded investment with no allowance 8,654us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpairedAccruingRestructuredLoansMember		 8,685us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpairedAccruingRestructuredLoansMember
Recorded investment with an allowance 7,990us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpairedAccruingRestructuredLoansMember		 7,989us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpairedAccruingRestructuredLoansMember
Related allowance 317us-gaap_ImpairedFinancingReceivableRelatedAllowance
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpairedAccruingRestructuredLoansMember		 370us-gaap_ImpairedFinancingReceivableRelatedAllowance
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpairedAccruingRestructuredLoansMember
Average recorded investment 16,675us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpairedAccruingRestructuredLoansMember		 22,400us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpairedAccruingRestructuredLoansMember
Interest income recognized 16,675us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethod
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpairedAccruingRestructuredLoansMember		 24,495us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethod
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpairedAccruingRestructuredLoansMember
Impaired Accruing TDRs [Member] | Construction Loans [Member]    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Unpaid principal balance 4,016us-gaap_ImpairedFinancingReceivableUnpaidPrincipalBalance
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpairedAccruingRestructuredLoansMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConstructionLoansMember		 4,022us-gaap_ImpairedFinancingReceivableUnpaidPrincipalBalance
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpairedAccruingRestructuredLoansMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConstructionLoansMember
Recorded investment with no allowance 3,196us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpairedAccruingRestructuredLoansMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConstructionLoansMember		 3,196us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpairedAccruingRestructuredLoansMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConstructionLoansMember
Recorded investment with an allowance 820us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpairedAccruingRestructuredLoansMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConstructionLoansMember		 826us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpairedAccruingRestructuredLoansMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConstructionLoansMember
Related allowance 39us-gaap_ImpairedFinancingReceivableRelatedAllowance
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpairedAccruingRestructuredLoansMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConstructionLoansMember		 41us-gaap_ImpairedFinancingReceivableRelatedAllowance
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpairedAccruingRestructuredLoansMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConstructionLoansMember
Average recorded investment 4,019us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpairedAccruingRestructuredLoansMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConstructionLoansMember		 3,609us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpairedAccruingRestructuredLoansMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConstructionLoansMember
Interest income recognized 4,019us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethod
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpairedAccruingRestructuredLoansMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConstructionLoansMember		 2,743us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethod
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpairedAccruingRestructuredLoansMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConstructionLoansMember
Impaired Accruing TDRs [Member] | Residential Real Estate [Member]    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Unpaid principal balance 6,322us-gaap_ImpairedFinancingReceivableUnpaidPrincipalBalance
/ us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis
= us-gaap_ResidentialRealEstateMember
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpairedAccruingRestructuredLoansMember		 6,368us-gaap_ImpairedFinancingReceivableUnpaidPrincipalBalance
/ us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis
= us-gaap_ResidentialRealEstateMember
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpairedAccruingRestructuredLoansMember
Recorded investment with no allowance 659us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment
/ us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis
= us-gaap_ResidentialRealEstateMember
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpairedAccruingRestructuredLoansMember		 668us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment
/ us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis
= us-gaap_ResidentialRealEstateMember
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpairedAccruingRestructuredLoansMember
Recorded investment with an allowance 5,663us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment
/ us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis
= us-gaap_ResidentialRealEstateMember
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpairedAccruingRestructuredLoansMember		 5,700us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment
/ us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis
= us-gaap_ResidentialRealEstateMember
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpairedAccruingRestructuredLoansMember
Related allowance 255us-gaap_ImpairedFinancingReceivableRelatedAllowance
/ us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis
= us-gaap_ResidentialRealEstateMember
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpairedAccruingRestructuredLoansMember		 300us-gaap_ImpairedFinancingReceivableRelatedAllowance
/ us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis
= us-gaap_ResidentialRealEstateMember
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpairedAccruingRestructuredLoansMember
Average recorded investment 6,338us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment
/ us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis
= us-gaap_ResidentialRealEstateMember
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpairedAccruingRestructuredLoansMember		 12,401us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment
/ us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis
= us-gaap_ResidentialRealEstateMember
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpairedAccruingRestructuredLoansMember
Interest income recognized 6,338us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethod
/ us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis
= us-gaap_ResidentialRealEstateMember
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpairedAccruingRestructuredLoansMember		 15,123us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethod
/ us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis
= us-gaap_ResidentialRealEstateMember
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpairedAccruingRestructuredLoansMember
Impaired Accruing TDRs [Member] | Commercial Real Estate [Member]    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Unpaid principal balance 6,261us-gaap_ImpairedFinancingReceivableUnpaidPrincipalBalance
/ us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis
= us-gaap_CommercialRealEstateMember
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpairedAccruingRestructuredLoansMember		 6,237us-gaap_ImpairedFinancingReceivableUnpaidPrincipalBalance
/ us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis
= us-gaap_CommercialRealEstateMember
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpairedAccruingRestructuredLoansMember
Recorded investment with no allowance 4,754us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment
/ us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis
= us-gaap_CommercialRealEstateMember
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpairedAccruingRestructuredLoansMember		 4,774us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment
/ us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis
= us-gaap_CommercialRealEstateMember
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpairedAccruingRestructuredLoansMember
Recorded investment with an allowance 1,507us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment
/ us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis
= us-gaap_CommercialRealEstateMember
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpairedAccruingRestructuredLoansMember		 1,463us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment
/ us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis
= us-gaap_CommercialRealEstateMember
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpairedAccruingRestructuredLoansMember
Related allowance 23us-gaap_ImpairedFinancingReceivableRelatedAllowance
/ us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis
= us-gaap_CommercialRealEstateMember
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpairedAccruingRestructuredLoansMember		 29us-gaap_ImpairedFinancingReceivableRelatedAllowance
/ us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis
= us-gaap_CommercialRealEstateMember
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpairedAccruingRestructuredLoansMember
Average recorded investment 6,272us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment
/ us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis
= us-gaap_CommercialRealEstateMember
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpairedAccruingRestructuredLoansMember		 6,342us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment
/ us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis
= us-gaap_CommercialRealEstateMember
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpairedAccruingRestructuredLoansMember
Interest income recognized 6,272us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethod
/ us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis
= us-gaap_CommercialRealEstateMember
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpairedAccruingRestructuredLoansMember		 6,574us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethod
/ us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis
= us-gaap_CommercialRealEstateMember
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpairedAccruingRestructuredLoansMember
Impaired Accruing TDRs [Member] | Commercial Loan [Member]    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Unpaid principal balance 45us-gaap_ImpairedFinancingReceivableUnpaidPrincipalBalance
/ us-gaap_FinancialInstrumentAxis
= us-gaap_CommercialLoanMember
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpairedAccruingRestructuredLoansMember		 47us-gaap_ImpairedFinancingReceivableUnpaidPrincipalBalance
/ us-gaap_FinancialInstrumentAxis
= us-gaap_CommercialLoanMember
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpairedAccruingRestructuredLoansMember
Recorded investment with no allowance 45us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment
/ us-gaap_FinancialInstrumentAxis
= us-gaap_CommercialLoanMember
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpairedAccruingRestructuredLoansMember		 47us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment
/ us-gaap_FinancialInstrumentAxis
= us-gaap_CommercialLoanMember
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpairedAccruingRestructuredLoansMember
Recorded investment with an allowance 0us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment
/ us-gaap_FinancialInstrumentAxis
= us-gaap_CommercialLoanMember
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpairedAccruingRestructuredLoansMember		 0us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment
/ us-gaap_FinancialInstrumentAxis
= us-gaap_CommercialLoanMember
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpairedAccruingRestructuredLoansMember
Related allowance 0us-gaap_ImpairedFinancingReceivableRelatedAllowance
/ us-gaap_FinancialInstrumentAxis
= us-gaap_CommercialLoanMember
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpairedAccruingRestructuredLoansMember		 0us-gaap_ImpairedFinancingReceivableRelatedAllowance
/ us-gaap_FinancialInstrumentAxis
= us-gaap_CommercialLoanMember
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpairedAccruingRestructuredLoansMember
Average recorded investment 46us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment
/ us-gaap_FinancialInstrumentAxis
= us-gaap_CommercialLoanMember
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpairedAccruingRestructuredLoansMember		 48us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment
/ us-gaap_FinancialInstrumentAxis
= us-gaap_CommercialLoanMember
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpairedAccruingRestructuredLoansMember
Interest income recognized 46us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethod
/ us-gaap_FinancialInstrumentAxis
= us-gaap_CommercialLoanMember
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpairedAccruingRestructuredLoansMember		 55us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethod
/ us-gaap_FinancialInstrumentAxis
= us-gaap_CommercialLoanMember
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpairedAccruingRestructuredLoansMember
Impaired Accruing TDRs [Member] | Consumer Loan [Member]    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Unpaid principal balance 0us-gaap_ImpairedFinancingReceivableUnpaidPrincipalBalance
/ us-gaap_FinancialInstrumentAxis
= us-gaap_ConsumerLoanMember
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpairedAccruingRestructuredLoansMember		 0us-gaap_ImpairedFinancingReceivableUnpaidPrincipalBalance
/ us-gaap_FinancialInstrumentAxis
= us-gaap_ConsumerLoanMember
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpairedAccruingRestructuredLoansMember
Recorded investment with no allowance 0us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment
/ us-gaap_FinancialInstrumentAxis
= us-gaap_ConsumerLoanMember
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpairedAccruingRestructuredLoansMember		 0us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment
/ us-gaap_FinancialInstrumentAxis
= us-gaap_ConsumerLoanMember
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpairedAccruingRestructuredLoansMember
Recorded investment with an allowance 0us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment
/ us-gaap_FinancialInstrumentAxis
= us-gaap_ConsumerLoanMember
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpairedAccruingRestructuredLoansMember		 0us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment
/ us-gaap_FinancialInstrumentAxis
= us-gaap_ConsumerLoanMember
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpairedAccruingRestructuredLoansMember
Related allowance 0us-gaap_ImpairedFinancingReceivableRelatedAllowance
/ us-gaap_FinancialInstrumentAxis
= us-gaap_ConsumerLoanMember
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpairedAccruingRestructuredLoansMember		 0us-gaap_ImpairedFinancingReceivableRelatedAllowance
/ us-gaap_FinancialInstrumentAxis
= us-gaap_ConsumerLoanMember
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpairedAccruingRestructuredLoansMember
Average recorded investment 0us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment
/ us-gaap_FinancialInstrumentAxis
= us-gaap_ConsumerLoanMember
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpairedAccruingRestructuredLoansMember		 0us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment
/ us-gaap_FinancialInstrumentAxis
= us-gaap_ConsumerLoanMember
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpairedAccruingRestructuredLoansMember
Interest income recognized 0us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethod
/ us-gaap_FinancialInstrumentAxis
= us-gaap_ConsumerLoanMember
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpairedAccruingRestructuredLoansMember		 0us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethod
/ us-gaap_FinancialInstrumentAxis
= us-gaap_ConsumerLoanMember
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpairedAccruingRestructuredLoansMember
Total Impired Loans [Member]    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Unpaid principal balance 35,196us-gaap_ImpairedFinancingReceivableUnpaidPrincipalBalance
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpiredAdverselyRatedLoansMember		 36,819us-gaap_ImpairedFinancingReceivableUnpaidPrincipalBalance
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpiredAdverselyRatedLoansMember
Recorded investment with no allowance 18,570us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpiredAdverselyRatedLoansMember		 18,860us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpiredAdverselyRatedLoansMember
Recorded investment with an allowance 10,989us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpiredAdverselyRatedLoansMember		 11,281us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpiredAdverselyRatedLoansMember
Related allowance 1,102us-gaap_ImpairedFinancingReceivableRelatedAllowance
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpiredAdverselyRatedLoansMember		 1,273us-gaap_ImpairedFinancingReceivableRelatedAllowance
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpiredAdverselyRatedLoansMember
Average recorded investment 29,673us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpiredAdverselyRatedLoansMember		 35,165us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpiredAdverselyRatedLoansMember
Interest income recognized 29,673us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethod
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpiredAdverselyRatedLoansMember		 39,961us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethod
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpiredAdverselyRatedLoansMember
Total Impired Loans [Member] | Construction Loans [Member]    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Unpaid principal balance 16,204us-gaap_ImpairedFinancingReceivableUnpaidPrincipalBalance
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpiredAdverselyRatedLoansMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConstructionLoansMember		 13,299us-gaap_ImpairedFinancingReceivableUnpaidPrincipalBalance
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpiredAdverselyRatedLoansMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConstructionLoansMember
Recorded investment with no allowance 8,877us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpiredAdverselyRatedLoansMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConstructionLoansMember		 9,241us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpiredAdverselyRatedLoansMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConstructionLoansMember
Recorded investment with an allowance 3,724us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpiredAdverselyRatedLoansMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConstructionLoansMember		 826us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpiredAdverselyRatedLoansMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConstructionLoansMember
Related allowance 729us-gaap_ImpairedFinancingReceivableRelatedAllowance
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpiredAdverselyRatedLoansMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConstructionLoansMember		 41us-gaap_ImpairedFinancingReceivableRelatedAllowance
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpiredAdverselyRatedLoansMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConstructionLoansMember
Average recorded investment 11,880us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpiredAdverselyRatedLoansMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConstructionLoansMember		 10,973us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpiredAdverselyRatedLoansMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConstructionLoansMember
Interest income recognized 11,880us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethod
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpiredAdverselyRatedLoansMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConstructionLoansMember		 10,482us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethod
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpiredAdverselyRatedLoansMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_ConstructionLoansMember
Total Impired Loans [Member] | Residential Real Estate [Member]    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Unpaid principal balance 8,500us-gaap_ImpairedFinancingReceivableUnpaidPrincipalBalance
/ us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis
= us-gaap_ResidentialRealEstateMember
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpiredAdverselyRatedLoansMember		 11,032us-gaap_ImpairedFinancingReceivableUnpaidPrincipalBalance
/ us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis
= us-gaap_ResidentialRealEstateMember
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpiredAdverselyRatedLoansMember
Recorded investment with no allowance 2,217us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment
/ us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis
= us-gaap_ResidentialRealEstateMember
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpiredAdverselyRatedLoansMember		 1,721us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment
/ us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis
= us-gaap_ResidentialRealEstateMember
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpiredAdverselyRatedLoansMember
Recorded investment with an allowance 5,758us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment
/ us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis
= us-gaap_ResidentialRealEstateMember
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpiredAdverselyRatedLoansMember		 8,682us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment
/ us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis
= us-gaap_ResidentialRealEstateMember
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpiredAdverselyRatedLoansMember
Related allowance 350us-gaap_ImpairedFinancingReceivableRelatedAllowance
/ us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis
= us-gaap_ResidentialRealEstateMember
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpiredAdverselyRatedLoansMember		 1,099us-gaap_ImpairedFinancingReceivableRelatedAllowance
/ us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis
= us-gaap_ResidentialRealEstateMember
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpiredAdverselyRatedLoansMember
Average recorded investment 8,614us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment
/ us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis
= us-gaap_ResidentialRealEstateMember
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpiredAdverselyRatedLoansMember		 15,082us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment
/ us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis
= us-gaap_ResidentialRealEstateMember
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpiredAdverselyRatedLoansMember
Interest income recognized 8,614us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethod
/ us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis
= us-gaap_ResidentialRealEstateMember
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpiredAdverselyRatedLoansMember		 18,445us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethod
/ us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis
= us-gaap_ResidentialRealEstateMember
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpiredAdverselyRatedLoansMember
Total Impired Loans [Member] | Commercial Real Estate [Member]    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Unpaid principal balance 10,255us-gaap_ImpairedFinancingReceivableUnpaidPrincipalBalance
/ us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis
= us-gaap_CommercialRealEstateMember
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpiredAdverselyRatedLoansMember		 10,940us-gaap_ImpairedFinancingReceivableUnpaidPrincipalBalance
/ us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis
= us-gaap_CommercialRealEstateMember
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpiredAdverselyRatedLoansMember
Recorded investment with no allowance 7,254us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment
/ us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis
= us-gaap_CommercialRealEstateMember
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpiredAdverselyRatedLoansMember		 7,616us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment
/ us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis
= us-gaap_CommercialRealEstateMember
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpiredAdverselyRatedLoansMember
Recorded investment with an allowance 1,507us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment
/ us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis
= us-gaap_CommercialRealEstateMember
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpiredAdverselyRatedLoansMember		 1,743us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment
/ us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis
= us-gaap_CommercialRealEstateMember
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpiredAdverselyRatedLoansMember
Related allowance 23us-gaap_ImpairedFinancingReceivableRelatedAllowance
/ us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis
= us-gaap_CommercialRealEstateMember
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpiredAdverselyRatedLoansMember		 129us-gaap_ImpairedFinancingReceivableRelatedAllowance
/ us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis
= us-gaap_CommercialRealEstateMember
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpiredAdverselyRatedLoansMember
Average recorded investment 8,961us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment
/ us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis
= us-gaap_CommercialRealEstateMember
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpiredAdverselyRatedLoansMember		 8,797us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment
/ us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis
= us-gaap_CommercialRealEstateMember
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpiredAdverselyRatedLoansMember
Interest income recognized 8,961us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethod
/ us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis
= us-gaap_CommercialRealEstateMember
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpiredAdverselyRatedLoansMember		 10,463us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethod
/ us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis
= us-gaap_CommercialRealEstateMember
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpiredAdverselyRatedLoansMember
Total Impired Loans [Member] | Commercial Loan [Member]    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Unpaid principal balance 108us-gaap_ImpairedFinancingReceivableUnpaidPrincipalBalance
/ us-gaap_FinancialInstrumentAxis
= us-gaap_CommercialLoanMember
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpiredAdverselyRatedLoansMember		 1,419us-gaap_ImpairedFinancingReceivableUnpaidPrincipalBalance
/ us-gaap_FinancialInstrumentAxis
= us-gaap_CommercialLoanMember
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpiredAdverselyRatedLoansMember
Recorded investment with no allowance 99us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment
/ us-gaap_FinancialInstrumentAxis
= us-gaap_CommercialLoanMember
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpiredAdverselyRatedLoansMember		 183us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment
/ us-gaap_FinancialInstrumentAxis
= us-gaap_CommercialLoanMember
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpiredAdverselyRatedLoansMember
Recorded investment with an allowance 0us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment
/ us-gaap_FinancialInstrumentAxis
= us-gaap_CommercialLoanMember
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpiredAdverselyRatedLoansMember		 5us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment
/ us-gaap_FinancialInstrumentAxis
= us-gaap_CommercialLoanMember
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpiredAdverselyRatedLoansMember
Related allowance 0us-gaap_ImpairedFinancingReceivableRelatedAllowance
/ us-gaap_FinancialInstrumentAxis
= us-gaap_CommercialLoanMember
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpiredAdverselyRatedLoansMember		 1us-gaap_ImpairedFinancingReceivableRelatedAllowance
/ us-gaap_FinancialInstrumentAxis
= us-gaap_CommercialLoanMember
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpiredAdverselyRatedLoansMember
Average recorded investment 95us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment
/ us-gaap_FinancialInstrumentAxis
= us-gaap_CommercialLoanMember
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpiredAdverselyRatedLoansMember		 189us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment
/ us-gaap_FinancialInstrumentAxis
= us-gaap_CommercialLoanMember
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpiredAdverselyRatedLoansMember
Interest income recognized 95us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethod
/ us-gaap_FinancialInstrumentAxis
= us-gaap_CommercialLoanMember
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpiredAdverselyRatedLoansMember		 492us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethod
/ us-gaap_FinancialInstrumentAxis
= us-gaap_CommercialLoanMember
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpiredAdverselyRatedLoansMember
Total Impired Loans [Member] | Consumer Loan [Member]    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Unpaid principal balance 129us-gaap_ImpairedFinancingReceivableUnpaidPrincipalBalance
/ us-gaap_FinancialInstrumentAxis
= us-gaap_ConsumerLoanMember
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpiredAdverselyRatedLoansMember		 129us-gaap_ImpairedFinancingReceivableUnpaidPrincipalBalance
/ us-gaap_FinancialInstrumentAxis
= us-gaap_ConsumerLoanMember
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpiredAdverselyRatedLoansMember
Recorded investment with no allowance 123us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment
/ us-gaap_FinancialInstrumentAxis
= us-gaap_ConsumerLoanMember
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpiredAdverselyRatedLoansMember		 99us-gaap_ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment
/ us-gaap_FinancialInstrumentAxis
= us-gaap_ConsumerLoanMember
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpiredAdverselyRatedLoansMember
Recorded investment with an allowance 0us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment
/ us-gaap_FinancialInstrumentAxis
= us-gaap_ConsumerLoanMember
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpiredAdverselyRatedLoansMember		 25us-gaap_ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment
/ us-gaap_FinancialInstrumentAxis
= us-gaap_ConsumerLoanMember
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpiredAdverselyRatedLoansMember
Related allowance 0us-gaap_ImpairedFinancingReceivableRelatedAllowance
/ us-gaap_FinancialInstrumentAxis
= us-gaap_ConsumerLoanMember
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpiredAdverselyRatedLoansMember		 3us-gaap_ImpairedFinancingReceivableRelatedAllowance
/ us-gaap_FinancialInstrumentAxis
= us-gaap_ConsumerLoanMember
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpiredAdverselyRatedLoansMember
Average recorded investment 123us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment
/ us-gaap_FinancialInstrumentAxis
= us-gaap_ConsumerLoanMember
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpiredAdverselyRatedLoansMember		 124us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment
/ us-gaap_FinancialInstrumentAxis
= us-gaap_ConsumerLoanMember
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpiredAdverselyRatedLoansMember
Interest income recognized $ 123us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethod
/ us-gaap_FinancialInstrumentAxis
= us-gaap_ConsumerLoanMember
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpiredAdverselyRatedLoansMember		 $ 79us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethod
/ us-gaap_FinancialInstrumentAxis
= us-gaap_ConsumerLoanMember
/ shbi_ImpairedNonaccrualLoansAxis
= shbi_ImpiredAdverselyRatedLoansMember