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Accounting for Certain Loans Acquired in a Transfer (Tables) | 9 Months Ended
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Sep. 30, 2017
Loans Purchased With Evidence of Credit Deterioration [Member] |
Accretable Yield or Income Expected to be Collected | Accretable yield, or income expected to be collected for the nine months ended September 30, is as follows:
|  | Nine Months Ended September 30, 2017 |
|  | Heartland |  |  | Summit |  |  | Peoples |  |  | Kosciusko |  |  | LaPorte |  |  | Total |
Balance at January 1 |  | $ | 557 |  |  | $ | 502 |  |  | $ | 389 |  |  | $ | 530 |  |  | $ | 1,479 |  |  | $ | 3,457 |
Additions |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |
Accretion |  |  | (99 | ) |  |  | (268 | ) |  |  | (388 | ) |  |  | (80 | ) |  |  | (194 | ) |  |  | (1,029 | )
Reclassification from nonaccretable difference |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |
Disposals |  |  | (6 | ) |  |  | (2 | ) |  |  | (1 | ) |  |  | (42 | ) |  |  | (264 | ) |  |  | (315 | )
Balance at September 30 |  | $ | 452 |  |  | $ | 232 |  |  | $ | — |  |  | $ | 408 |  |  | $ | 1,021 |  |  | $ | 2,113 |
|  | Nine Months Ended September 30, 2016 |
|  | Heartland |  |  | Summit |  |  | Peoples |  |  | Kosciusko |  |  | LaPorte |  |  | Total |
Balance at January 1 |  | $ | 795 |  |  | $ | 708 |  |  | $ | 555 |  |  | $ | — |  |  | $ | — |  |  | $ | 2,058 |
Additions |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 634 |  |  |  | 1,736 |  |  |  | 2,370 |
Accretion |  |  | (127 | ) |  |  | (139 | ) |  |  | (92 | ) |  |  | (38 | ) |  |  | — |  |  |  | (396 | )
Reclassification from nonaccretable difference |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |
Disposals |  |  | (74 | ) |  |  | (35 | ) |  |  | (59 | ) |  |  | (23 | ) |  |  | — |  |  |  | (191 | )
Balance at September 30 |  | $ | 594 |  |  | $ | 534 |  |  | $ | 404 |  |  | $ | 573 |  |  | $ | — |  |  | $ | 3,841 |

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- Definition Certain loans acquired in transfer not accounted for as debt securities accretable yield movement. + References No definition available. + Details
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Namespace Prefix: | hbnc_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | us-gaap_ReceivablesAcquiredWithDeterioratedCreditQualityAxis=us-gaap_ReceivablesAcquiredWithDeterioratedCreditQualityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |