Accrual of interest discontinued description.

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Cash and cash equivalent maximum maturity period.

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Full service facilities maintained by bank.

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- Definition

Minimum period seldom held.

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- Definition

Mortgage loan deferred due cost.

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- Definition

Mortgage warehousing maximum pay off period.

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- Definition

Number of business conduct.

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- Definition

Number of valuation techniques to measure fair value.

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- Definition

Percentage of commercial loan.

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- Definition

Percentage of installment loans.

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- Definition

Percentage of mortgage warehouse loans.

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- Definition

Percentage of residential real estate loan.

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- Definition

Percent of likely event consider for unrecognized tax benefit recognition.

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- Definition

Period for delay or short fall determination for loan.

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Period for impairment evaluation for loan.

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Period for non accrual determination for loan.

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- Definition

Period of loan sold by mortgage company.

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- Definition

Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

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Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

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Interest rate used to find the present value of an amount to be paid or received in the future as an input to measure fair value. For example, but not limited to, weighted average cost of capital (WACC), cost of capital, cost of equity and cost of debt.

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Bank deposits belonging to an acquired bank that can be counted on as a stable source of lending funds. These deposits have the following attributes: predictable costs and low sensitivity to interest rates. This intangible asset is usually amortized over its estimated useful life.

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Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Amount of the effect of a change in accounting principle on net income.

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Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

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Amount of dividends that can be declared or paid with approval of regulatory agency.

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Nature of Operations and Summary of Significant Accounting Policies - Additional Information (Detail) (USD $)	12 Months Ended
	Dec. 31, 2014 Facilities Business Valuation_Techniques	Dec. 31, 2013	Dec. 31, 2012	Apr. 03, 2014
Schedule Of Accounting Policies [Line Items]
Full service facilities maintained by bank	31
Number of business conduct	0hbnc_NumberOfBusinessConduct
Number of valuation techniques to measure fair value	3
Factor considered to be significant for fair value measurement	10.00%us-gaap_FairValueInputsDiscountRate
Accrual of interest discontinued description	Principal or interest is past due 90 days or more, and the loan is not well secured or in the process of collection, or when serious doubt exists as to the collectability of a loan, the accrual of interest is discontinued
Commercial loans as a percentage of total loan	50.00%hbnc_PercentageOfCommercialLoan
Residential real estate loans as a percentage of total loan	18.00%
Installment loans as a percentage of total loan	23.00%hbnc_PercentageOfInstallmentLoans
Mortgage warehouse loans as a percentage of total loan	9.00%hbnc_PercentageOfMortgageWarehouseLoans
Period in which loan sold by mortgage company	30 days
Minimum period loan held by mortgage company	90 days
Mortgage warehousing maximum pay off period	30 days
Costs are deferred due to the term	$ 0hbnc_MortgageLoanDeferredDueCost
Impaired loans charged off	90 days
Status of Non-Accrual of Loan	90 days
Impairment of Loan	30 days
Intangibles, Gross	4,000,000us-gaap_FiniteLivedCoreDepositsGross
Goodwill	28,176,000us-gaap_Goodwill	19,748,000us-gaap_Goodwill		8,428,000us-gaap_Goodwill
Uncertain tax positions recognized	50.00%
Shares, non-dilutive	2,500	0	8,438
Amount available for payment of dividend	24,700,000
Cash and cash equivalents maximum maturity period	1 day
Compensation expense	566,000	336,000	220,000
Reclassifications effect on net income	$ 0
Buildings and Improvements [Member] \| Minimum [Member]
Schedule Of Accounting Policies [Line Items]
Useful Life for depreciation	3 years
Buildings and Improvements [Member] \| Maximum [Member]
Schedule Of Accounting Policies [Line Items]
Useful Life for depreciation	40 years
Furniture and Equipment [Member] \| Minimum [Member]
Schedule Of Accounting Policies [Line Items]
Useful Life for depreciation	2 years
Furniture and Equipment [Member] \| Maximum [Member]
Schedule Of Accounting Policies [Line Items]
Useful Life for depreciation	20 years