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REGULATORY CAPITAL REQUIREMENTS (Details) (USD $) In Thousands, unless otherwise specified | Dec. 31, 2014 | Dec. 31, 2013
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Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items] |  |
Tier 1 Capital | $ 112,511 us-gaap_TierOneRiskBasedCapital | $ 72,370 us-gaap_TierOneRiskBasedCapital
Total Risk-Based Capital | 120,510 us-gaap_Capital | 81,341 us-gaap_Capital
Net Risk-Weighted Assets | 736,763 us-gaap_RiskWeightedAssets | 717,129 us-gaap_RiskWeightedAssets
Adjusted Average Total Assets | 1,075,674 shbi_AdjustedAverageTotalAssets | 1,028,957 shbi_AdjustedAverageTotalAssets
Tier 1 Risk-Based Capital Ratio | 15.27%us-gaap_TierOneRiskBasedCapitalToRiskWeightedAssets | 10.09%us-gaap_TierOneRiskBasedCapitalToRiskWeightedAssets
Total Risk-Based Capital Ratio | 16.36%us-gaap_CapitalToRiskWeightedAssets | 11.34%us-gaap_CapitalToRiskWeightedAssets
Tier 1 Leverage Ratio | 10.46%us-gaap_TierOneLeverageCapitalToAverageAssets | 7.03%us-gaap_TierOneLeverageCapitalToAverageAssets
Talbot Bank [Member] |  |
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items] |  |
Tier 1 Capital | 51,637 us-gaap_TierOneRiskBasedCapital / dei_LegalEntityAxis = shbi_TalbotBankMember | 28,395 us-gaap_TierOneRiskBasedCapital / dei_LegalEntityAxis = shbi_TalbotBankMember
Total Risk-Based Capital | 55,910 us-gaap_Capital / dei_LegalEntityAxis = shbi_TalbotBankMember | 33,554 us-gaap_Capital / dei_LegalEntityAxis = shbi_TalbotBankMember
Net Risk-Weighted Assets | 394,788 us-gaap_RiskWeightedAssets / dei_LegalEntityAxis = shbi_TalbotBankMember | 410,547 us-gaap_RiskWeightedAssets / dei_LegalEntityAxis = shbi_TalbotBankMember
Adjusted Average Total Assets | 579,781 shbi_AdjustedAverageTotalAssets / dei_LegalEntityAxis = shbi_TalbotBankMember | 569,689 shbi_AdjustedAverageTotalAssets / dei_LegalEntityAxis = shbi_TalbotBankMember
Tier 1 Risk-Based Capital Ratio | 13.08%us-gaap_TierOneRiskBasedCapitalToRiskWeightedAssets / dei_LegalEntityAxis = shbi_TalbotBankMember | 6.92%us-gaap_TierOneRiskBasedCapitalToRiskWeightedAssets / dei_LegalEntityAxis = shbi_TalbotBankMember
Total Risk-Based Capital Ratio | 14.16%us-gaap_CapitalToRiskWeightedAssets / dei_LegalEntityAxis = shbi_TalbotBankMember | 8.17%us-gaap_CapitalToRiskWeightedAssets / dei_LegalEntityAxis = shbi_TalbotBankMember
Tier 1 Leverage Ratio | 8.91%us-gaap_TierOneLeverageCapitalToAverageAssets / dei_LegalEntityAxis = shbi_TalbotBankMember | 4.98%us-gaap_TierOneLeverageCapitalToAverageAssets / dei_LegalEntityAxis = shbi_TalbotBankMember
Centreville National Bank [Member] |  |
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items] |  |
Tier 1 Capital | 44,869 us-gaap_TierOneRiskBasedCapital / dei_LegalEntityAxis = shbi_CentrevilleNationalBankMember | 42,186 us-gaap_TierOneRiskBasedCapital / dei_LegalEntityAxis = shbi_CentrevilleNationalBankMember
Total Risk-Based Capital | 48,594 us-gaap_Capital / dei_LegalEntityAxis = shbi_CentrevilleNationalBankMember | 45,998 us-gaap_Capital / dei_LegalEntityAxis = shbi_CentrevilleNationalBankMember
Net Risk-Weighted Assets | 331,089 us-gaap_RiskWeightedAssets / dei_LegalEntityAxis = shbi_CentrevilleNationalBankMember | 305,278 us-gaap_RiskWeightedAssets / dei_LegalEntityAxis = shbi_CentrevilleNationalBankMember
Adjusted Average Total Assets | $ 485,042 shbi_AdjustedAverageTotalAssets / dei_LegalEntityAxis = shbi_CentrevilleNationalBankMember | $ 460,747 shbi_AdjustedAverageTotalAssets / dei_LegalEntityAxis = shbi_CentrevilleNationalBankMember
Tier 1 Risk-Based Capital Ratio | 13.55%us-gaap_TierOneRiskBasedCapitalToRiskWeightedAssets / dei_LegalEntityAxis = shbi_CentrevilleNationalBankMember | 13.82%us-gaap_TierOneRiskBasedCapitalToRiskWeightedAssets / dei_LegalEntityAxis = shbi_CentrevilleNationalBankMember
Total Risk-Based Capital Ratio | 14.68%us-gaap_CapitalToRiskWeightedAssets / dei_LegalEntityAxis = shbi_CentrevilleNationalBankMember | 15.07%us-gaap_CapitalToRiskWeightedAssets / dei_LegalEntityAxis = shbi_CentrevilleNationalBankMember
Tier 1 Leverage Ratio | 9.25%us-gaap_TierOneLeverageCapitalToAverageAssets / dei_LegalEntityAxis = shbi_CentrevilleNationalBankMember | 9.16%us-gaap_TierOneLeverageCapitalToAverageAssets / dei_LegalEntityAxis = shbi_CentrevilleNationalBankMember

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