2.4.0.840501 - Disclosure - Securities Available For Sale (Narrative) (Details)truefalseIn Thousands, unless otherwise specifiedfalse1false USDfalsefalse$Duration_4_1_2013_To_6_30_2013http://www.sec.gov/CIK0000743367duration2013-04-01T00:00:002013-06-30T00:00:00Unit1Standardhttp://www.xbrl.org/2003/iso4217USDiso42170Unit15Standardhttp://www.bhbt.com/20130630securitybhb0USDUSD$2false USDfalsefalse$Duration_4_1_2012_To_6_30_2012http://www.sec.gov/CIK0000743367duration2012-04-01T00:00:002012-06-30T00:00:00Unit1Standardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$3false USDfalsefalse$Duration_1_1_2013_To_6_30_2013http://www.sec.gov/CIK0000743367duration2013-01-01T00:00:002013-06-30T00:00:00Unit1Standardhttp://www.xbrl.org/2003/iso4217USDiso42170Unit15Standardhttp://www.bhbt.com/20130630securitybhb0USDUSD$4false USDfalsefalse$Duration_1_1_2012_To_6_30_2012http://www.sec.gov/CIK0000743367duration2012-01-01T00:00:002012-06-30T00:00:00Unit1Standardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$5false USDfalsefalse$As_Of_12_31_2012http://www.sec.gov/CIK0000743367instant2012-12-31T00:00:000001-01-01T00:00:00Unit1Standardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$6false USDtruefalse$As_Of_6_30_2013_us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis_us-gaap_USStatesAndPoliticalSubdivisionsMemberhttp://www.sec.gov/CIK0000743367instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseObligations Of States And Political Subdivisions Thereof [Member]us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_USStatesAndPoliticalSubdivisionsMemberus-gaap_MajorTypesOfDebtAndEquitySecuritiesAxisexplicitMemberUnit1Standardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$7false USDtruefalse$As_Of_12_31_2012_us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis_us-gaap_USStatesAndPoliticalSubdivisionsMemberhttp://www.sec.gov/CIK0000743367instant2012-12-31T00:00:000001-01-01T00:00:00falsefalseObligations Of States And Political Subdivisions Thereof [Member]us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_USStatesAndPoliticalSubdivisionsMemberus-gaap_MajorTypesOfDebtAndEquitySecuritiesAxisexplicitMemberUnit1Standardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$8false USDtruefalse$Duration_1_1_2013_To_6_30_2013_us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis_us-gaap_MortgageBackedSecuritiesIssuedByPrivateEnterprisesMemberhttp://www.sec.gov/CIK0000743367duration2013-01-01T00:00:002013-06-30T00:00:00falsefalsePrivate Label Mortgage-Backed Securities [Member]us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_MortgageBackedSecuritiesIssuedByPrivateEnterprisesMemberus-gaap_MajorTypesOfDebtAndEquitySecuritiesAxisexplicitMemberUnit1Standardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$9false USDtruefalse$Duration_1_1_2012_To_12_31_2012_us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis_us-gaap_MortgageBackedSecuritiesIssuedByPrivateEnterprisesMemberhttp://www.sec.gov/CIK0000743367duration2012-01-01T00:00:002012-12-31T00:00:00falsefalsePrivate Label Mortgage-Backed Securities [Member]us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_MortgageBackedSecuritiesIssuedByPrivateEnterprisesMemberus-gaap_MajorTypesOfDebtAndEquitySecuritiesAxisexplicitMemberUnit1Standardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$10false USDtruefalse$As_Of_6_30_2013_us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis_bhb_MortgageBackedSecuritiesIssuedByUsGovernmentAgencyMemberhttp://www.sec.gov/CIK0000743367instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseUS Government Agency [Member]us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxisxbrldihttp://xbrl.org/2006/xbrldibhb_MortgageBackedSecuritiesIssuedByUsGovernmentAgencyMemberus-gaap_MajorTypesOfDebtAndEquitySecuritiesAxisexplicitMemberUnit1Standardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$11false USDtruefalse$As_Of_12_31_2012_us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis_bhb_MortgageBackedSecuritiesIssuedByUsGovernmentAgencyMemberhttp://www.sec.gov/CIK0000743367instant2012-12-31T00:00:000001-01-01T00:00:00falsefalseUS Government Agency [Member]us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxisxbrldihttp://xbrl.org/2006/xbrldibhb_MortgageBackedSecuritiesIssuedByUsGovernmentAgencyMemberus-gaap_MajorTypesOfDebtAndEquitySecuritiesAxisexplicitMemberUnit1Standardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$12false USDtruefalse$As_Of_6_30_2013_us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis_us-gaap_MortgageBackedSecuritiesIssuedByUSGovernmentSponsoredEnterprisesMemberhttp://www.sec.gov/CIK0000743367instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseUS Government-Sponsored Enterprises [Member]us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_MortgageBackedSecuritiesIssuedByUSGovernmentSponsoredEnterprisesMemberus-gaap_MajorTypesOfDebtAndEquitySecuritiesAxisexplicitMemberUnit1Standardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$13false USDtruefalse$As_Of_12_31_2012_us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis_us-gaap_MortgageBackedSecuritiesIssuedByUSGovernmentSponsoredEnterprisesMemberhttp://www.sec.gov/CIK0000743367instant2012-12-31T00:00:000001-01-01T00:00:00falsefalseUS Government-Sponsored Enterprises [Member]us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_MortgageBackedSecuritiesIssuedByUSGovernmentSponsoredEnterprisesMemberus-gaap_MajorTypesOfDebtAndEquitySecuritiesAxisexplicitMemberUnit1Standardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$1true 3us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItemsus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalse5falsefalsefalse00falsefalsefalse6falsefalsefalse00falsefalsefalse7falsefalsefalse00falsefalsefalse8falsefalsefalse00falsefalsefalse9falsefalsefalse00falsefalsefalse10falsefalsefalse00falsefalsefalse11falsefalsefalse00falsefalsefalse12falsefalsefalse00falsefalsefalse13falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Schedule of Available for sale Securities [Line Items]2false 4bhb_PrivateLabelMortgageBackedSecuritiesAmountHeldbhb_falsenainstantfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse1414falsefalsefalse2falsefalsefalse00falsefalsefalse3truefalsefalse1414falsefalsefalse4falsefalsefalse00falsefalsefalse5falsefalsefalse00falsefalsefalse6falsefalsefalse00falsefalsefalse7falsefalsefalse00falsefalsefalse8falsefalsefalse00falsefalsefalse9falsefalsefalse00falsefalsefalse10falsefalsefalse00falsefalsefalse11falsefalsefalse00falsefalsefalse12falsefalsefalse00falsefalsefalse13falsefalsefalse00falsefalsefalsexbrli:integerItemTypeintegerPrivate-Label Mortgage Backed Securities, Amount HeldNo definition available.false256Private-label MBS (debt securities), amount held3false 4bhb_SecuritiesRecognizedAsCreditLossesInExcessOfUnrealizedLossesInAccumulatedOtherComprehensiveIncomeResultingInUnrealizedGainbhb_falsenainstantfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse1111falsefalsefalse2falsefalsefalse00falsefalsefalse3truefalsefalse1111falsefalsefalse4falsefalsefalse00falsefalsefalse5falsefalsefalse00falsefalsefalse6falsefalsefalse00falsefalsefalse7falsefalsefalse00falsefalsefalse8falsefalsefalse00falsefalsefalse9falsefalsefalse00falsefalsefalse10falsefalsefalse00falsefalsefalse11falsefalsefalse00falsefalsefalse12falsefalsefalse00falsefalsefalse13falsefalsefalse00falsefalsefalsexbrli:integerItemTypeintegerSecurities Recognized As Credit Losses In Excess Of The Unrealized Losses In Accumulated Other Comprehensive Income, Resulting In an Unrealized GainNo definition available.false256Securities recognized as credit losses in excess of the unrealized losses in accumulated OCI, creating an unrealized gain4false 4bhb_SecuritiesRecognizedRelatedToTotalOtherThanTemporaryImpairmentLossesIncludedInAccumulatedOtherComprehensiveIncomebhb_falsenainstantfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse33falsefalsefalse2falsefalsefalse00falsefalsefalse3truefalsefalse33falsefalsefalse4falsefalsefalse00falsefalsefalse5falsefalsefalse00falsefalsefalse6falsefalsefalse00falsefalsefalse7falsefalsefalse00falsefalsefalse8falsefalsefalse00falsefalsefalse9falsefalsefalse00falsefalsefalse10falsefalsefalse00falsefalsefalse11falsefalsefalse00falsefalsefalse12falsefalsefalse00falsefalsefalse13falsefalsefalse00falsefalsefalsexbrli:decimalItemTypedecimalSecurities recognized Related To Total Other Than Temporary Impairment Losses Included In Accumulated Other Comprehensive IncomeNo definition available.false256Total OTTI losses included in accumulated OCI, securities held5false 4us-gaap_MarketableSecuritiesRealizedGainLossOtherThanTemporaryImpairmentsAmountus-gaap_truedebitdurationfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse168000168USD$falsetruefalse2truefalsefalse376000376USD$falsetruefalse3truefalsefalse168000168USD$falsetruefalse4truefalsefalse834000834USD$falsetruefalse5falsefalsefalse00falsefalsefalse6falsefalsefalse00falsefalsefalse7falsefalsefalse00falsefalsefalse8falsefalsefalse00falsefalsefalse9falsefalsefalse00falsefalsefalse10falsefalsefalse00falsefalsefalse11falsefalsefalse00falsefalsefalse12falsefalsefalse00falsefalsefalse13falsefalsefalse00falsefalsefalsexbrli:monetaryItemTypemonetaryThis element represents the amount of loss recognized for other than temporary impairments (OTTI) of investments in debt and equity securities.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 115 -Paragraph 16 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 5.M) -URI http://asc.fasb.org/extlink&oid=6784337&loc=d3e87990-122713 false2Other than temporary impairment losses6false 4bhb_OtherThanTemporaryImpairmentLossesAvailableForSaleSecuritiesLossesFromFactorsOtherThanCreditBeforeTaxesbhb_falsedebitdurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3truefalsefalse5300053falsefalsefalse4falsefalsefalse00falsefalsefalse5falsefalsefalse00falsefalsefalse6falsefalsefalse00falsefalsefalse7falsefalsefalse00falsefalsefalse8falsefalsefalse00falsefalsefalse9falsefalsefalse00falsefalsefalse10falsefalsefalse00falsefalsefalse11falsefalsefalse00falsefalsefalse12falsefalsefalse00falsefalsefalse13falsefalsefalse00falsefalsefalsexbrli:monetaryItemTypemonetaryOther Than Temporary Impairment Losses, Available For Sale Securities, Losses From Factors Other Than Credit, Before TaxesNo definition available.false2Unrealized losses resulting from factors other than credit7false 4us-gaap_OtherThanTemporaryImpairmentLossesInvestmentsPortionRecognizedInEarningsNetus-gaap_truedebitdurationfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse-115000-115falsefalsefalse2truefalsefalse-336000-336falsefalsefalse3truefalsefalse-115000-115falsefalsefalse4truefalsefalse-680000-680falsefalsefalse5falsefalsefalse00falsefalsefalse6falsefalsefalse00falsefalsefalse7falsefalsefalse00falsefalsefalse8falsefalsefalse00falsefalsefalse9falsefalsefalse00falsefalsefalse10falsefalsefalse00falsefalsefalse11falsefalsefalse00falsefalsefalse12falsefalsefalse00falsefalsefalse13falsefalsefalse00falsefalsefalsexbrli:monetaryItemTypemonetaryThe amount of other than temporary impairment (OTTI) losses on equity securities, OTTI related to credit losses on debt securities, and OTTI losses on debt securities when the entity intends to sell the securities or it is more likely than not that the entity will be required to sell the securities before recovery of its amortized cost basis. Additionally, this item includes OTTI losses recognized during the period on investments accounted for under the cost method of accounting.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name FASB Staff Position (FSP) -Number FAS115-1/124-1 -Paragraph 7 -Footnote 2 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name FASB Staff Position (FSP) -Number FAS115-1/124-1 -Paragraph 15D -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name FASB Staff Position (FSP) -Number FAS115-1/124-1 -Paragraph 15C -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name FASB Staff Position (FSP) -Number FAS115-1/124-1 -Paragraph 16B -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. false2Net OTTI losses recognized in earnings8false 4us-gaap_OtherThanTemporaryImpairmentLossesInvestmentsPortionRecognizedInEarningsNetHeldtomaturitySecuritiesus-gaap_truedebitdurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3truefalsefalse33300003330falsefalsefalse4falsefalsefalse00falsefalsefalse5falsefalsefalse00falsefalsefalse6falsefalsefalse00falsefalsefalse7falsefalsefalse00falsefalsefalse8falsefalsefalse00falsefalsefalse9falsefalsefalse00falsefalsefalse10falsefalsefalse00falsefalsefalse11falsefalsefalse00falsefalsefalse12falsefalsefalse00falsefalsefalse13falsefalsefalse00falsefalsefalsexbrli:monetaryItemTypemonetaryThe amount of other than temporary impairment losses on investments in debt securities categorized as Held-to-maturity which have been recognized in earnings during the period. Such impairment losses consist of other than temporary impairments (OTTI) of investments in debt securities due to credit losses and other than temporary impairments due to other than credit losses when the entity intends to sell an impaired debt security or it is more likely than not that the entity will be required to sell the impaired debt security before recovery of its amortized cost basis.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name FASB Staff Position (FSP) -Number FAS115-1/124-1 -Paragraph 7 -Footnote 2 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name FASB Staff Position (FSP) -Number FAS115-1/124-1 -Paragraph 15D -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name FASB Staff Position (FSP) -Number FAS115-1/124-1 -Paragraph 15C -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name FASB Staff Position (FSP) -Number FAS115-1/124-1 -Paragraph 16B -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. false2Amortized cost included OTTI losses9false 4us-gaap_AvailableForSaleSecuritiesChangeInNetUnrealizedHoldingGainLossNetOfTaxus-gaap_truecreditdurationfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalse5falsefalsefalse00falsefalsefalse6falsefalsefalse00falsefalsefalse7falsefalsefalse00falsefalsefalse8truefalsefalse569000569falsefalsefalse9truefalsefalse144000144falsefalsefalse10falsefalsefalse00falsefalsefalse11falsefalsefalse00falsefalsefalse12falsefalsefalse00falsefalsefalse13falsefalsefalse00falsefalsefalsexbrli:monetaryItemTypemonetaryThe change in unrealized holding gain (loss), net of tax, on available-for-sale securities included in a separate component of shareholders' equity during the period.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 115 -Paragraph 21 -Subparagraph d -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 9 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=6872113&loc=d3e27357-111563 false2Unrealized gain, net of tax10false 4us-gaap_AccumulatedOtherComprehensiveIncomeLossOtherThanTemporaryImpairmentNotCreditLossNetOfTaxAvailableforsaleDebtSecuritiesus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse9900099falsefalsefalse2falsefalsefalse00falsefalsefalse3truefalsefalse9900099falsefalsefalse4falsefalsefalse00falsefalsefalse5falsefalsefalse00falsefalsefalse6falsefalsefalse00falsefalsefalse7falsefalsefalse00falsefalsefalse8falsefalsefalse00falsefalsefalse9falsefalsefalse00falsefalsefalse10falsefalsefalse00falsefalsefalse11falsefalsefalse00falsefalsefalse12falsefalsefalse00falsefalsefalse13falsefalsefalse00falsefalsefalsexbrli:monetaryItemTypemonetaryAccumulated other comprehensive loss related to portion of other than temporary impairment (OTTI) due to factors other than credit losses on debt securities categorized as available-for-sale that an entity does not intend to sell and which it is not more likely than not that the entity will be required to sell before recovery of the amortized cost basis of the debt security. The amount represented by this item is net of tax, as applicable.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=20435746&loc=SL7669686-108580 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name FASB Staff Position (FSP) -Number FAS115-1/124-1 -Paragraph 7 -Footnote 2 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 115 -Paragraph 19 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name FASB Staff Position (FSP) -Number FAS115-1/124-1 -Paragraph 16C -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. false2OTTI losses included in accumulated OCI amount11false 4us-gaap_AccumulatedOtherComprehensiveIncomeLossOtherThanTemporaryImpairmentNotCreditLossNetOfTaxDebtSecuritiesus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsetruenegatedNetLabel1truefalsefalse470000470falsefalsefalse2falsefalsefalse00falsefalsefalse3truefalsefalse470000470falsefalsefalse4falsefalsefalse00falsefalsefalse5truefalsefalse144000144falsefalsefalse6falsefalsefalse00falsefalsefalse7falsefalsefalse00falsefalsefalse8truefalsefalse115000115falsefalsefalse9truefalsefalse470000470falsefalsefalse10falsefalsefalse00falsefalsefalse11falsefalsefalse00falsefalsefalse12falsefalsefalse00falsefalsefalse13falsefalsefalse00falsefalsefalsexbrli:monetaryItemTypemonetaryTotal of accumulated other comprehensive loss related to that portion of other than temporary impairment (OTTI) due to factors other than credit losses on debt securities categorized either as available-for-sale or held-to-maturity that an entity does not intend to sell and which it is not more likely than not that the entity will be required to sell before recovery of the amortized cost basis of the debt security. The amount represented by this item is net of tax, as applicable.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=20435746&loc=SL7669686-108580 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name FASB Staff Position (FSP) -Number FAS115-1/124-1 -Paragraph 7 -Footnote 2 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 115 -Paragraph 19 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name FASB Staff Position (FSP) -Number FAS115-1/124-1 -Paragraph 16C -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. false2OTTI recognized in pre-tax earnings amount, net of tax12false 4us-gaap_AvailableForSaleSecuritiesGrossUnrealizedLosses1us-gaap_truecreditinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse1312800013128USD$falsetruefalse2falsefalsefalse00falsefalsefalse3truefalsefalse1312800013128USD$falsetruefalse4falsefalsefalse00falsefalsefalse5truefalsefalse23330002333USD$falsetruefalse6truefalsefalse55640005564USD$falsetruefalse7truefalsefalse532000532USD$falsetruefalse8truefalsefalse175000175USD$falsetruefalse9truefalsefalse521000521USD$falsetruefalse10truefalsefalse15540001554USD$falsetruefalse11truefalsefalse216000216USD$falsetruefalse12truefalsefalse58350005835USD$falsetruefalse13truefalsefalse10640001064USD$falsetruefalsexbrli:monetaryItemTypemonetaryThis item represents the gross unrealized losses for securities, at a point in time, which are categorized neither as held-to-maturity nor trading securities.No definition available.false2Unrealized losses on securitiesfalseSecurities Available For Sale (Narrative) (Details) (USD $)ThousandsUnKnownUnKnownUnKnowntruefalsefalseSheethttp://www.bhbt.com/2011-03-31/role/DisclosureSecuritiesAvailableForSaleNarrativeDetails1312