2.4.0.820202 - Disclosure - Management's Use Of Estimates (Policy)truefalsefalse1false falsefalseDuration_1_1_2013_To_6_30_2013http://www.sec.gov/CIK0000743367duration2013-01-01T00:00:002013-06-30T00:00:001true 1bhb_ManagementSUseOfEstimatesAbstractbhb_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Management's Use Of Estimates [Abstract]2false 2us-gaap_LoansAndLeasesReceivableAllowanceForLoanLossesPolicyus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1falsefalsefalse00<div> <div> Allowance for Loan Losses: The allowance for loan losses (the "allowance") is a significant accounting estimate used in the preparation of the Company's consolidated financial statements. The allowance is available to absorb losses on loans and is maintained at a level that, in management's judgment, is appropriate for the amount of risk inherent in the loan portfolio, given past and present conditions. The allowance is increased by provisions charged to operating expense and by recoveries on loans previously charged-off, and is decreased by loans charged-off as uncollectible. Arriving at an appropriate level of allowance involves a high degree of judgment. The determination of the adequacy of the allowance and provisioning for estimated losses is evaluated regularly based on review of loans, with particular emphasis on non-performing or other loans that management believes warrant special consideration. The ongoing evaluation process includes a formal analysis, which considers among other factors: the character and size of the loan portfolio, business and economic conditions, real estate market conditions, collateral values, changes in product offerings or loan terms, changes in underwriting and/or collection policies, loan growth, previous charge-off experience, delinquency trends, non-performing loan trends, the performance of individual loans in relation to contract terms, and estimated fair values of collateral.<a name="page_9"> </a> The allowance consists of allowances established for specific loans including impaired loans; allowances for pools of loans based on historical charge-offs by loan types; and supplemental allowances that adjust historical loss experience to reflect current economic conditions, industry specific risks, and other observable data. While management uses available information to recognize losses on loans, changing economic conditions and the economic prospects of the borrowers may necessitate future additions or reductions to the allowance. In addition, various regulatory agencies, as an integral part of their examination process, periodically review the allowance, which also may necessitate future additions or reductions to the allowance, based on information available to them at the time of their examination.</div> </div>falsefalsefalsenonnum:textBlockItemTypenaDisclosure of accounting policy for estimating the allowance for losses on loans and lease receivables. The disclosure may include (a) how the entity determines each element of the allowance, (b) which loans are evaluated individually and which loans are evaluated as a group, (c) how the entity determines both the allocated and unallocated portions of the allowance, (d) how the entity determines the loss factors applied to graded loans in order to develop a general allowance, and (e) what self-correcting mechanism the entity uses to reduce differences between estimated and actual losses.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6367646&loc=d3e18780-107790 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 9 -URI http://asc.fasb.org/extlink&oid=7512638&loc=d3e5144-111524 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 5 -Paragraph 9 -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. false0Allowance For Loan Losses3false 2bhb_OtherThanTemporaryImpairmentsOnInvestmentSecuritiesPolicyTextBlockbhb_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1falsefalsefalse00<div> <div> Other-Than-Temporary Impairments on Investment Securities: One of the significant estimates relating to securities is the evaluation of other-than-temporary impairment. If a decline in the fair value of a security is judged to be other-than-temporary, and management does not intend to sell the security and believes it is more-likely-than-not the Company will not be required to sell the security prior to recovery of cost or amortized cost, the portion of the total impairment attributable to the credit loss is recognized in earnings, and the remaining difference between the security's amortized cost basis and its fair value is included in other comprehensive income. For impaired available for sale debt securities that management intends to sell, or where management believes it is more-likely-than-not that the Company will be required to sell, an other-than-temporary impairment charge is recognized in earnings equal to the difference between fair value and cost or amortized cost basis of the security. The fair value of the other-than-temporarily impaired security becomes its new cost basis. The evaluation of securities for impairments is a quantitative and qualitative process, which is subject to risks and uncertainties and is intended to determine whether declines in the fair value of securities should be recognized in current period earnings. The risks and uncertainties include changes in general economic conditions, the issuer's financial condition and/or future prospects, the effects of changes in interest rates or credit spreads and the expected recovery period of unrealized losses. The Company has a security monitoring process that identifies securities that, due to certain characteristics, as described below, are subjected to an enhanced analysis on a quarterly basis. Securities that are in an unrealized loss position, are reviewed at least quarterly to determine if an other-than-temporary impairment is present based on certain quantitative and qualitative factors and measures. The primary factors considered in evaluating whether a decline in value of securities is other-than-temporary include: (a) the cause of the impairment; (b) the financial condition, credit rating and future prospects of the issuer; (c) whether the debtor is current on contractually obligated interest and principal payments; (d) the volatility of the securities' fair value; (e) performance indicators of the underlying assets in the security including default rates, delinquency rates, percentage of non-performing assets, loan to collateral value ratios, conditional payment rates, third party guarantees, current levels of subordination, vintage, and geographic concentration and; (f) any other information and observable data considered relevant in determining whether other-than-temporary impairment has occurred, including the expectation of the receipt of all principal and interest due. In addition, for securitized financial assets with contractual cash flows, such as private label mortgage-backed securities, the Company periodically updates its best estimate of cash flows over the life of the security. The Company's best estimate of cash flows is based upon assumptions consistent with the current economic environment, similar to those the Company believes market participants would use. If the fair value of a securitized financial asset is less than its cost or amortized cost and there has been an adverse change in timing or amount of anticipated future cash flows since the last revised estimate to the extent that the Company does not expect to receive the entire amount of future contractual principal and interest, an other-than-temporary impairment charge is recognized in earnings representing the estimated.<a name="page_10"> </a> credit loss if management does not intend to sell the security and believes it is more-likely-than-not the Company will not be required to sell the security prior to recovery of cost or amortized cost. Estimating future cash flows is a quantitative and qualitative process that incorporates information received from third party sources along with certain assumptions and judgments regarding the future performance of the underlying collateral. In addition, projections of expected future cash flows may change based upon new information regarding the performance of the underlying collateral.</div> </div>falsefalsefalsenonnum:textBlockItemTypenaOther-than-temporary impairments on investment securities [Policy Text Block].No definition available.false0Other-Than-Temporary Impairments On Investment Securities4false 2us-gaap_IncomeTaxPolicyTextBlockus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1falsefalsefalse00<div> <div> Income Taxes: The Company uses the asset and liability method of accounting for income taxes. Under this method, deferred tax assets and liabilities are recognized for the future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases. If current available information indicates that it is more-likely-than-not that deferred tax assets will not be realized, a valuation allowance is established. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which those temporary differences are expected to be recovered or settled. The effect on deferred tax assets and liabilities of a change in tax rates is recognized in income in the period that includes the enactment date. Significant management judgment is required in determining income tax expense and deferred tax assets and liabilities. As of June 30, 2013, and December 31, 2012, there was no valuation allowance for deferred tax assets. Deferred tax assets are included in other assets on the consolidated balance sheet.</div> </div>falsefalsefalsenonnum:textBlockItemTypenaDisclosure of accounting policy for income taxes, which may include its accounting policies for recognizing and measuring deferred tax assets and liabilities and related valuation allowances, recognizing investment tax credits, operating loss carryforwards, tax credit carryforwards, and other carryforwards, methodologies for determining its effective income tax rate and the characterization of interest and penalties in the financial statements.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Principles Board Opinion (APB) -Number 4 -Paragraph 11 -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 Interpretation (FIN) -Number 48 -Paragraph 20 -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 Accounting Standards Codification -Topic 235 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6367646&loc=d3e18780-107790 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 45 -Paragraph 25 -URI http://asc.fasb.org/extlink&oid=21917399&loc=d3e32247-109318 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 19 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32840-109319 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 30 -URI http://asc.fasb.org/subtopic&trid=2144749 Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 954 -SubTopic 740 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6491622&loc=d3e9504-115650 Reference 8: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -URI http://asc.fasb.org/subtopic&trid=2144681 Reference 9: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 17 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32809-109319 Reference 10: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 45 -Paragraph 28 -URI http://asc.fasb.org/extlink&oid=21917399&loc=d3e32280-109318 Reference 11: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 109 -Paragraph 6-34, 43, 47, 49 -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. false0Income Taxes5false 2us-gaap_GoodwillAndIntangibleAssetsPolicyTextBlockus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1falsefalsefalse00<div> <div> Goodwill and Identifiable Intangible Assets: In connection with acquisitions, the Company generally records as assets on its consolidated financial statements both goodwill and identifiable intangible assets, such as core deposit intangibles. The Company evaluates whether the carrying value of its goodwill has become impaired, in which case the value is reduced through a charge to its earnings. Goodwill is evaluated for impairment at least annually, or upon a triggering event using certain fair value techniques. Goodwill impairment testing is performed at the segment (or "reporting unit") level. Goodwill is assigned to reporting units at the date the goodwill is initially recorded. Once goodwill has been assigned to the reporting units, it no longer retains its association with a particular acquisition, and all of the activities within a reporting unit, whether acquired or organically grown, are available to support the value of the goodwill. Goodwill represents the excess of the purchase price over the fair value of net assets acquired in accordance with the purchase method of accounting for business combinations. Goodwill is not amortized but, instead, is subject to impairment tests on at least an annual basis or more frequently if an event occurs or circumstances change that reduce the fair value of a reporting unit below its carrying amount. The Company completes its annual goodwill impairment test as of December 31 of each year. The impairment testing process is conducted by assigning assets and goodwill to each reporting unit. Currently, the Company's goodwill is evaluated at the entity level as there is only one reporting unit. The Company first assesses certain qualitative factors to determine if it is more likely than not that the fair value of the reporting unit is less than its carrying value. If it is more likely than not that the fair value of the reporting unit is less than the carrying value, then the fair value of each reporting unit is compared to the recorded book value "step one." If the fair value of the reporting unit exceeds its carrying value, goodwill is not considered impaired and "step two" is not considered necessary. If the carrying value of a reporting unit exceeds its fair value, the impairment test continues ("step two") by comparing the carrying value of the reporting unit's goodwill to the implied fair value of goodwill. The implied fair value is computed by adjusting all assets and liabilities of the reporting unit to current fair value with the offset adjustment to goodwill. The adjusted goodwill balance is the implied fair value of the goodwill. An impairment charge is recognized if the carrying fair value of goodwill exceeds the implied fair value of goodwill. At December 31, 2012, there was no indication of impairment that led the Company to believe it needed to perform a two-step test.<a name="page_11"> </a> Any changes in the estimates used by the Company to determine the carrying value of its goodwill, or which otherwise adversely affect their value or estimated lives, would adversely affect the Company's consolidated results of operations.</div> </div>falsefalsefalsenonnum:textBlockItemTypenaDisclosure of accounting policy for goodwill and intangible assets. This accounting policy also may address how an entity assesses and measures impairment of goodwill and intangible assets.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6367646&loc=d3e18780-107790 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -URI http://asc.fasb.org/subtopic&trid=2144471 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 144 -Paragraph 7-18, 22 -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 Accounting Standards Codification -Topic 350 -SubTopic 20 -URI http://asc.fasb.org/subtopic&trid=2144439 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 142 -Paragraph 4, 11-23, 26, 34 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. 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