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Loan Servicing (Details Textual) (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Loan Servicing (Textual) [Abstract]
Unpaid principal balances of loans serviced for others totaled	$ 772,100,000	$ 599,100,000
Aggregate fair value of capitalized mortgage servicing rights	6,600,000	5,400,000	3,700,000
Mortgage servicing rights, net	5,145,000	4,193,000	3,372,000
Bank recorded additional impairment	$ 168,000	$ 53,000	$ 664,000

X

- Definition

Additional impairment.

+ References

No definition available.

+ Details

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Namespace Prefix:	hbnc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Capitalized mortgage service right fair value.

+ References

No definition available.

+ Details

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

X

- Definition

Finite lived mortgage servicing rights net of impairment.

+ References

No definition available.

+ Details

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

X

- Details

Name:	hbnc_LoanServicingTextualAbstract
Namespace Prefix:	hbnc_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Principal amount of service loan outstanding.

+ References

No definition available.

+ Details

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