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SEGMENT REPORTING (Details) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2014 | Sep. 30, 2014 | Jun. 30, 2014 | Mar. 31, 2014 | Dec. 31, 2013 | Sep. 30, 2013 | Jun. 30, 2013 | Mar. 31, 2013 | Dec. 31, 2012 | Sep. 30, 2012 | Jun. 30, 2012 | Mar. 31, 2012 | Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest income | $ 9,625 us-gaap_InterestAndDividendIncomeOperating | $ 9,686 us-gaap_InterestAndDividendIncomeOperating | $ 9,523 us-gaap_InterestAndDividendIncomeOperating | $ 9,455 us-gaap_InterestAndDividendIncomeOperating | $ 9,807 us-gaap_InterestAndDividendIncomeOperating | $ 10,182 us-gaap_InterestAndDividendIncomeOperating | $ 10,755 us-gaap_InterestAndDividendIncomeOperating | $ 10,607 us-gaap_InterestAndDividendIncomeOperating | $ 10,960 us-gaap_InterestAndDividendIncomeOperating | $ 11,393 us-gaap_InterestAndDividendIncomeOperating | $ 11,692 us-gaap_InterestAndDividendIncomeOperating | $ 11,856 us-gaap_InterestAndDividendIncomeOperating | $ 38,289 us-gaap_InterestAndDividendIncomeOperating | $ 41,351 us-gaap_InterestAndDividendIncomeOperating | $ 45,901 us-gaap_InterestAndDividendIncomeOperating
Interest expense |  |  |  |  |  |  |  |  |  |  |  |  | (4,247)us-gaap_InterestExpense | (6,475)us-gaap_InterestExpense | (10,562)us-gaap_InterestExpense
Provision for credit losses | (650)us-gaap_ProvisionForLoanLossesExpensed | (775)us-gaap_ProvisionForLoanLossesExpensed | (950)us-gaap_ProvisionForLoanLossesExpensed | (975)us-gaap_ProvisionForLoanLossesExpensed | (474)us-gaap_ProvisionForLoanLossesExpensed | (22,460)us-gaap_ProvisionForLoanLossesExpensed | (2,700)us-gaap_ProvisionForLoanLossesExpensed | (2,150)us-gaap_ProvisionForLoanLossesExpensed | (9,650)us-gaap_ProvisionForLoanLossesExpensed | (6,200)us-gaap_ProvisionForLoanLossesExpensed | (3,525)us-gaap_ProvisionForLoanLossesExpensed | (8,370)us-gaap_ProvisionForLoanLossesExpensed | (3,350)us-gaap_ProvisionForLoanLossesExpensed | (27,784)us-gaap_ProvisionForLoanLossesExpensed | (27,745)us-gaap_ProvisionForLoanLossesExpensed
Noninterest income |  |  |  |  |  |  |  |  |  |  |  |  | 16,781 us-gaap_NoninterestIncome | 17,459 us-gaap_NoninterestIncome | 15,758 us-gaap_NoninterestIncome
Noninterest expense |  |  |  |  |  |  |  |  |  |  |  |  | (39,361)us-gaap_NoninterestExpense | (40,686)us-gaap_NoninterestExpense | (39,555)us-gaap_NoninterestExpense
Net intersegment (expense) income |  |  |  |  |  |  |  |  |  |  |  |  | 0 shbi_IntersegmentExpenseIncome | 0 shbi_IntersegmentExpenseIncome | 0 shbi_IntersegmentExpenseIncome
(Loss) income before income taxes | 1,947 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments | 2,036 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments | 2,108 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments | 2,021 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments | 1,843 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments | (18,808)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments | 504 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments | 326 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments | (8,348)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments | (3,178)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments | 422 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments | (5,099)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments | 8,112 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments | (16,135)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments | (16,203)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments
Income tax benefit (expense) |  |  |  |  |  |  |  |  |  |  |  |  | (3,061)us-gaap_IncomeTaxExpenseBenefit | 6,501 us-gaap_IncomeTaxExpenseBenefit | 6,565 us-gaap_IncomeTaxExpenseBenefit
Net (loss) income | 1,226 us-gaap_NetIncomeLoss | 1,262 us-gaap_NetIncomeLoss | 1,305 us-gaap_NetIncomeLoss | 1,258 us-gaap_NetIncomeLoss | 1,175 us-gaap_NetIncomeLoss | (11,392)us-gaap_NetIncomeLoss | 361 us-gaap_NetIncomeLoss | 222 us-gaap_NetIncomeLoss | (5,074)us-gaap_NetIncomeLoss | (1,821)us-gaap_NetIncomeLoss | 293 us-gaap_NetIncomeLoss | (3,036)us-gaap_NetIncomeLoss | 5,051 us-gaap_NetIncomeLoss | (9,634)us-gaap_NetIncomeLoss | (9,638)us-gaap_NetIncomeLoss
Total assets | 1,100,402 us-gaap_Assets |  |  |  | 1,054,124 us-gaap_Assets |  |  |  | 1,185,807 us-gaap_Assets |  |  |  | 1,100,402 us-gaap_Assets | 1,054,124 us-gaap_Assets | 1,185,807 us-gaap_Assets
Community Banking [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest income |  |  |  |  |  |  |  |  |  |  |  |  | 38,202 us-gaap_InterestAndDividendIncomeOperating / dei_LegalEntityAxis = shbi_CommunityBankingMember | 41,310 us-gaap_InterestAndDividendIncomeOperating / dei_LegalEntityAxis = shbi_CommunityBankingMember | 45,822 us-gaap_InterestAndDividendIncomeOperating / dei_LegalEntityAxis = shbi_CommunityBankingMember
Interest expense |  |  |  |  |  |  |  |  |  |  |  |  | (4,247)us-gaap_InterestExpense / dei_LegalEntityAxis = shbi_CommunityBankingMember | (6,475)us-gaap_InterestExpense / dei_LegalEntityAxis = shbi_CommunityBankingMember | (10,546)us-gaap_InterestExpense / dei_LegalEntityAxis = shbi_CommunityBankingMember
Provision for credit losses |  |  |  |  |  |  |  |  |  |  |  |  | (3,350)us-gaap_ProvisionForLoanLossesExpensed / dei_LegalEntityAxis = shbi_CommunityBankingMember | (27,784)us-gaap_ProvisionForLoanLossesExpensed / dei_LegalEntityAxis = shbi_CommunityBankingMember | (27,745)us-gaap_ProvisionForLoanLossesExpensed / dei_LegalEntityAxis = shbi_CommunityBankingMember
Noninterest income |  |  |  |  |  |  |  |  |  |  |  |  | 6,482 us-gaap_NoninterestIncome / dei_LegalEntityAxis = shbi_CommunityBankingMember | 5,716 us-gaap_NoninterestIncome / dei_LegalEntityAxis = shbi_CommunityBankingMember | 5,197 us-gaap_NoninterestIncome / dei_LegalEntityAxis = shbi_CommunityBankingMember
Noninterest expense |  |  |  |  |  |  |  |  |  |  |  |  | (22,776)us-gaap_NoninterestExpense / dei_LegalEntityAxis = shbi_CommunityBankingMember | (23,676)us-gaap_NoninterestExpense / dei_LegalEntityAxis = shbi_CommunityBankingMember | (23,702)us-gaap_NoninterestExpense / dei_LegalEntityAxis = shbi_CommunityBankingMember
Net intersegment (expense) income |  |  |  |  |  |  |  |  |  |  |  |  | (7,010)shbi_IntersegmentExpenseIncome / dei_LegalEntityAxis = shbi_CommunityBankingMember | (5,359)shbi_IntersegmentExpenseIncome / dei_LegalEntityAxis = shbi_CommunityBankingMember | (4,993)shbi_IntersegmentExpenseIncome / dei_LegalEntityAxis = shbi_CommunityBankingMember
(Loss) income before income taxes |  |  |  |  |  |  |  |  |  |  |  |  | 7,301 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments / dei_LegalEntityAxis = shbi_CommunityBankingMember | (16,268)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments / dei_LegalEntityAxis = shbi_CommunityBankingMember | (15,967)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments / dei_LegalEntityAxis = shbi_CommunityBankingMember
Income tax benefit (expense) |  |  |  |  |  |  |  |  |  |  |  |  | (2,755)us-gaap_IncomeTaxExpenseBenefit / dei_LegalEntityAxis = shbi_CommunityBankingMember | 6,556 us-gaap_IncomeTaxExpenseBenefit / dei_LegalEntityAxis = shbi_CommunityBankingMember | 6,467 us-gaap_IncomeTaxExpenseBenefit / dei_LegalEntityAxis = shbi_CommunityBankingMember
Net (loss) income |  |  |  |  |  |  |  |  |  |  |  |  | 4,546 us-gaap_NetIncomeLoss / dei_LegalEntityAxis = shbi_CommunityBankingMember | (9,712)us-gaap_NetIncomeLoss / dei_LegalEntityAxis = shbi_CommunityBankingMember | (9,500)us-gaap_NetIncomeLoss / dei_LegalEntityAxis = shbi_CommunityBankingMember
Total assets | 1,074,638 us-gaap_Assets / dei_LegalEntityAxis = shbi_CommunityBankingMember |  |  |  | 1,036,098 us-gaap_Assets / dei_LegalEntityAxis = shbi_CommunityBankingMember |  |  |  | 1,166,468 us-gaap_Assets / dei_LegalEntityAxis = shbi_CommunityBankingMember |  |  |  | 1,074,638 us-gaap_Assets / dei_LegalEntityAxis = shbi_CommunityBankingMember | 1,036,098 us-gaap_Assets / dei_LegalEntityAxis = shbi_CommunityBankingMember | 1,166,468 us-gaap_Assets / dei_LegalEntityAxis = shbi_CommunityBankingMember
Insurance Products and Services [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest income |  |  |  |  |  |  |  |  |  |  |  |  | 0 us-gaap_InterestAndDividendIncomeOperating / dei_LegalEntityAxis = shbi_InsuranceProductsAndServicesMember | 41 us-gaap_InterestAndDividendIncomeOperating / dei_LegalEntityAxis = shbi_InsuranceProductsAndServicesMember | 79 us-gaap_InterestAndDividendIncomeOperating / dei_LegalEntityAxis = shbi_InsuranceProductsAndServicesMember
Interest expense |  |  |  |  |  |  |  |  |  |  |  |  | 0 us-gaap_InterestExpense / dei_LegalEntityAxis = shbi_InsuranceProductsAndServicesMember | 0 us-gaap_InterestExpense / dei_LegalEntityAxis = shbi_InsuranceProductsAndServicesMember | 0 us-gaap_InterestExpense / dei_LegalEntityAxis = shbi_InsuranceProductsAndServicesMember
Provision for credit losses |  |  |  |  |  |  |  |  |  |  |  |  | 0 us-gaap_ProvisionForLoanLossesExpensed / dei_LegalEntityAxis = shbi_InsuranceProductsAndServicesMember | 0 us-gaap_ProvisionForLoanLossesExpensed / dei_LegalEntityAxis = shbi_InsuranceProductsAndServicesMember | 0 us-gaap_ProvisionForLoanLossesExpensed / dei_LegalEntityAxis = shbi_InsuranceProductsAndServicesMember
Noninterest income |  |  |  |  |  |  |  |  |  |  |  |  | 10,305 us-gaap_NoninterestIncome / dei_LegalEntityAxis = shbi_InsuranceProductsAndServicesMember | 11,737 us-gaap_NoninterestIncome / dei_LegalEntityAxis = shbi_InsuranceProductsAndServicesMember | 10,422 us-gaap_NoninterestIncome / dei_LegalEntityAxis = shbi_InsuranceProductsAndServicesMember
Noninterest expense |  |  |  |  |  |  |  |  |  |  |  |  | (8,527)us-gaap_NoninterestExpense / dei_LegalEntityAxis = shbi_InsuranceProductsAndServicesMember | (10,350)us-gaap_NoninterestExpense / dei_LegalEntityAxis = shbi_InsuranceProductsAndServicesMember | (9,820)us-gaap_NoninterestExpense / dei_LegalEntityAxis = shbi_InsuranceProductsAndServicesMember
Net intersegment (expense) income |  |  |  |  |  |  |  |  |  |  |  |  | (680)shbi_IntersegmentExpenseIncome / dei_LegalEntityAxis = shbi_InsuranceProductsAndServicesMember | (655)shbi_IntersegmentExpenseIncome / dei_LegalEntityAxis = shbi_InsuranceProductsAndServicesMember | (503)shbi_IntersegmentExpenseIncome / dei_LegalEntityAxis = shbi_InsuranceProductsAndServicesMember
(Loss) income before income taxes |  |  |  |  |  |  |  |  |  |  |  |  | 1,098 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments / dei_LegalEntityAxis = shbi_InsuranceProductsAndServicesMember | 773 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments / dei_LegalEntityAxis = shbi_InsuranceProductsAndServicesMember | 178 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments / dei_LegalEntityAxis = shbi_InsuranceProductsAndServicesMember
Income tax benefit (expense) |  |  |  |  |  |  |  |  |  |  |  |  | (414)us-gaap_IncomeTaxExpenseBenefit / dei_LegalEntityAxis = shbi_InsuranceProductsAndServicesMember | (313)us-gaap_IncomeTaxExpenseBenefit / dei_LegalEntityAxis = shbi_InsuranceProductsAndServicesMember | (70)us-gaap_IncomeTaxExpenseBenefit / dei_LegalEntityAxis = shbi_InsuranceProductsAndServicesMember
Net (loss) income |  |  |  |  |  |  |  |  |  |  |  |  | 684 us-gaap_NetIncomeLoss / dei_LegalEntityAxis = shbi_InsuranceProductsAndServicesMember | 460 us-gaap_NetIncomeLoss / dei_LegalEntityAxis = shbi_InsuranceProductsAndServicesMember | 108 us-gaap_NetIncomeLoss / dei_LegalEntityAxis = shbi_InsuranceProductsAndServicesMember
Total assets | 10,824 us-gaap_Assets / dei_LegalEntityAxis = shbi_InsuranceProductsAndServicesMember |  |  |  | 15,759 us-gaap_Assets / dei_LegalEntityAxis = shbi_InsuranceProductsAndServicesMember |  |  |  | 16,809 us-gaap_Assets / dei_LegalEntityAxis = shbi_InsuranceProductsAndServicesMember |  |  |  | 10,824 us-gaap_Assets / dei_LegalEntityAxis = shbi_InsuranceProductsAndServicesMember | 15,759 us-gaap_Assets / dei_LegalEntityAxis = shbi_InsuranceProductsAndServicesMember | 16,809 us-gaap_Assets / dei_LegalEntityAxis = shbi_InsuranceProductsAndServicesMember
Parent Company [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest income |  |  |  |  |  |  |  |  |  |  |  |  | 87 us-gaap_InterestAndDividendIncomeOperating / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 0 us-gaap_InterestAndDividendIncomeOperating / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 0 us-gaap_InterestAndDividendIncomeOperating / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Interest expense |  |  |  |  |  |  |  |  |  |  |  |  | 0 us-gaap_InterestExpense / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 0 us-gaap_InterestExpense / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | (16)us-gaap_InterestExpense / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Provision for credit losses |  |  |  |  |  |  |  |  |  |  |  |  | 0 us-gaap_ProvisionForLoanLossesExpensed / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 0 us-gaap_ProvisionForLoanLossesExpensed / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 0 us-gaap_ProvisionForLoanLossesExpensed / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Noninterest income |  |  |  |  |  |  |  |  |  |  |  |  | (6)us-gaap_NoninterestIncome / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 6 us-gaap_NoninterestIncome / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 139 us-gaap_NoninterestIncome / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Noninterest expense |  |  |  |  |  |  |  |  |  |  |  |  | (8,058)us-gaap_NoninterestExpense / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | (6,660)us-gaap_NoninterestExpense / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | (6,033)us-gaap_NoninterestExpense / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Net intersegment (expense) income |  |  |  |  |  |  |  |  |  |  |  |  | 7,690 shbi_IntersegmentExpenseIncome / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 6,014 shbi_IntersegmentExpenseIncome / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 5,496 shbi_IntersegmentExpenseIncome / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
(Loss) income before income taxes |  |  |  |  |  |  |  |  |  |  |  |  | (287)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | (640)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | (414)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Income tax benefit (expense) |  |  |  |  |  |  |  |  |  |  |  |  | 108 us-gaap_IncomeTaxExpenseBenefit / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 258 us-gaap_IncomeTaxExpenseBenefit / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 168 us-gaap_IncomeTaxExpenseBenefit / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Net (loss) income |  |  |  |  |  |  |  |  |  |  |  |  | (179)us-gaap_NetIncomeLoss / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | (382)us-gaap_NetIncomeLoss / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | (246)us-gaap_NetIncomeLoss / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Total assets | $ 14,940 us-gaap_Assets / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  |  |  | $ 2,267 us-gaap_Assets / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  |  |  | $ 2,530 us-gaap_Assets / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  |  |  | $ 14,940 us-gaap_Assets / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | $ 2,267 us-gaap_Assets / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | $ 2,530 us-gaap_Assets / dei_LegalEntityAxis = us-gaap_ParentCompanyMember

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- Definition Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.18) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 12 -Article 7 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 18 -Article 5 + Details
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