Business acquisition cost of acquired entity estimated purchase price.

No definition available.

Name:	hbnc_BusinessAcquisitionCostOfAcquiredEntityEstimatedPurchasePrice
Namespace Prefix:	hbnc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Business combination cash transferred, percentage of consideration.

+ References

No definition available.

+ Details

Name:	hbnc_BusinessCombinationCashTransferredPercentageOfConsideration
Namespace Prefix:	hbnc_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Business combination stock transferred, percentage of consideration.

+ References

No definition available.

+ Details

Name:	hbnc_BusinessCombinationStockTransferredPercentageOfConsideration
Namespace Prefix:	hbnc_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Cash paid per share, business combination.

+ References

No definition available.

+ Details

Name:	hbnc_CashPaidPerShareBusinessCombination
Namespace Prefix:	hbnc_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	duration

- Definition

Exchange ratio per share.

+ References

No definition available.

+ Details

Name:	hbnc_ExchangeRatioPerShare
Namespace Prefix:	hbnc_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

Name:	us-gaap_BusinessAcquisitionLineItems
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Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Price of a single share of a number of saleable stocks paid or offered to be paid in a business combination.

+ References

No definition available.

+ Details

Name:	us-gaap_BusinessAcquisitionSharePrice
Namespace Prefix:	us-gaap_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	instant

- Definition

Amount of assets acquired at the acquisition date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=56956791&loc=d3e4845-128472

+ Details

Name:	us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

The amount of financial assets (as defined) recognized as of the acquisition date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 55
-Paragraph 37
-URI http://asc.fasb.org/extlink&oid=35744172&loc=d3e2207-128464

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-Glossary Financial Asset
-URI http://asc.fasb.org/extlink&oid=6512957

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=56956791&loc=d3e4845-128472

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount of liabilities assumed at the acquisition date.

+ References

+ Details

Name:	us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Details

Name:	us-gaap_BusinessAcquisitionAxis=hbnc_KosciuskoFinancialIncMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_BusinessAcquisitionAxis=hbnc_LaporteBancorpIncMember
Namespace Prefix:
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Business Combinations - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Millions	Mar. 10, 2016	Feb. 04, 2016	Mar. 09, 2016	Feb. 03, 2016	Dec. 31, 2015
Kosciusko Financial Inc [Member]
Business Acquisition [Line Items]
Cash paid for each share to Peoples shareholder		$ 81.75
Exchange ratio per share to Peoples shareholder		301.22%
Business combination stock transferred, percentage of consideration		65.00%
Business combination cash transferred, percentage of consideration		35.00%
Market closing price per share				$ 23.99
Estimated transaction value				$ 22.5
Reported total assets of acquiree					$ 148.2
Total deposits held by acquiree					122.8
Total loans of acquiree					106.1
LaPorte Bancorp Inc [Member]
Business Acquisition [Line Items]
Cash paid for each share to Peoples shareholder	$ 17.50
Exchange ratio per share to Peoples shareholder	62.90%
Business combination stock transferred, percentage of consideration	65.00%
Business combination cash transferred, percentage of consideration	35.00%
Market closing price per share			$ 24.21
Estimated transaction value			$ 94.1
Reported total assets of acquiree					543.2
Total deposits held by acquiree					391.0
Total loans of acquiree					$ 348.5