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Business Combination (Schedule of Contractually Required Payments Receivable) (Details) - Northwest Bank Branches [Member] $ in Thousands | May 19, 2017 USD ($)
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Contractually required payments receivable | $ 125,131
Cash flows expected to be collected | 125,131
Accretable FMV adjustments | 2,269
Carrying value of loans receivable | $ 122,862

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- Definition Business combination acquired loans accretable fair market value adjustment with no signs of credit deterioration. + References No definition available. + Details
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Namespace Prefix: | shbi_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Business combination acquired loans carrying value of loans receivable with no signs of credit deterioration. + References No definition available. + Details
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Namespace Prefix: | shbi_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition Business combination acquired loans cash flows expected to be collected with no signs of credit deterioration. + References No definition available. + Details
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Namespace Prefix: | shbi_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Business combination acquired loans contractually required payments receivable with no signs of credit deterioration. + References No definition available. + Details
Name: | shbi_BusinessCombinationAcquiredLoansContractuallyRequiredPaymentsReceivable
Namespace Prefix: | shbi_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Details
Name: | us-gaap_BusinessAcquisitionAxis=shbi_NorthwestBankBranchesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |