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v3.25.3

Regulatory Capital (Tables) | 9 Months Ended
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Sep. 30, 2025
Banking and Thrift, Interest [Abstract] |
Schedule of Regulatory Capital Requirement | The following table presents Horizon and the Bank’s actual and required capital ratios as of September 30, 2025 and December 31, 2024, as well as the revisions to Horizon's regulatory capital ratios to reflect the correction of the capital computations for the foregoing periods:
| Actual |  | Required for Capital Adequacy Purposes(1) |  | Required For Capital Adequacy Purposes with Capital Buffer(1) |  | Well Capitalized Under Prompt Corrective Action Provisions(1)
| Amount |  | Ratio |  | Amount |  | Ratio |  | Amount |  | Ratio |  | Amount |  | Ratio
September 30, 2025 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total capital (to risk-weighted assets) (1) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Consolidated | $ | 785,080 |  |  | 15.00 | % |  | $ | 418,661 |  |  | 8.00 | % |  | $ | 549,492 |  |  | 10.50 | % |  | N/A |  | N/A
Bank | 664,754 |  |  | 12.75 |  |  | 417,237 |  |  | 8.00 |  |  | 547,624 |  |  | 10.50 |  |  | $521,546 |  | 10.00%
Tier 1 capital (1) (to risk-weighted assets) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Consolidated | 589,789 |  |  | 11.27 |  |  | 313,995 |  |  | 6.00 |  |  | 444,827 |  |  | 8.50 |  |  | N/A |  | N/A
Bank | 612,305 |  |  | 11.74 |  |  | 312,928 |  |  | 6.00 |  |  | 443,314 |  |  | 8.50 |  |  | 417,237 |  | 8.00
Common equity tier 1 capital (1) (to risk-weighted assets) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Consolidated | 532,153 |  |  | 10.17 |  |  | 235,497 |  |  | 4.50 |  |  | 366,328 |  |  | 7.00 |  |  | N/A |  | N/A
Bank | 612,305 |  |  | 11.74 |  |  | 234,696 |  |  | 4.50 |  |  | 365,082 |  |  | 7.00 |  |  | 339,005 |  | 6.50
Tier 1 capital (to average assets) (1) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Consolidated | 589,789 |  |  | 8.22 |  |  | 286,859 |  |  | 4.00 |  |  | 286,859 |  |  | 4.00 |  |  | N/A |  | N/A
Bank | 612,305 |  |  | 8.55 |  |  | 286,332 |  |  | 4.00 |  |  | 286,332 |  |  | 4.00 |  |  | 357,915 |  | 5.00
(1) As defined by regulatory agencies
| Actual |  | Required for Capital Adequacy Purposes(1) |  | Required For Capital Adequacy Purposes with Capital Buffer(1) |  | Well Capitalized Under Prompt Corrective Action Provisions(1)
| Amount |  | Ratio |  | Amount |  | Ratio |  | Amount |  | Ratio |  | Amount |  | Ratio
December 31, 2024 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total capital (to risk-weighted assets) (1) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Consolidated | $ | 800,209 |  |  | 13.91 | % |  | $ | 460,266 |  |  | 8.00 | % |  | $ | 604,099 |  |  | 10.50 | % |  | N/A |  | N/A
Bank | 725,383 |  |  | 12.64 | % |  | 459,039 |  |  | 8.00 | % |  | 602,489 |  |  | 10.50 | % |  | 573,799 |  | 10.00%
Tier 1 capital (1) (to risk-weighted assets) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Consolidated | 690,183 |  |  | 12.00 | % |  | 345,199 |  |  | 6.00 | % |  | 489,033 |  |  | 8.50 | % |  | N/A |  | N/A
Bank | 671,095 |  |  | 11.70 | % |  | 344,279 |  |  | 6.00 | % |  | 487,729 |  |  | 8.50 | % |  | 459,039 |  | 8.00%
Common equity tier 1 capital (1) (to risk-weighted assets) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Consolidated | 632,760 |  |  | 11.11 | % |  | 258,900 |  |  | 4.50 | % |  | 402,733 |  |  | 7.00 | % |  | N/A |  | N/A
Bank | 671,095 |  |  | 11.70 | % |  | 258,209 |  |  | 4.50 | % |  | 401,659 |  |  | 7.00 | % |  | 372,969 |  | 6.50%
Tier 1 capital (to average assets) (1) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Consolidated | 690,183 |  |  | 8.88 | % |  | 310,825 |  |  | 4.00 | % |  | 310,825 |  |  | 4.00 | % |  | N/A |  | N/A
Bank | 671,095 |  |  | 8.64 | % |  | 310,539 |  |  | 4.00 | % |  | 310,539 |  |  | 4.00 | % |  | 388,174 |  | 5.00%
(1) As defined by regulatory agencies

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- Definition Tabular disclosure of the capital amounts and ratios as of the balance sheet date, indicating whether the entity or entities are in compliance with regulatory capital requirements, by entity. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 942 -SubTopic 505 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (c)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147477270/942-505-50-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 942 -SubTopic 505 -Name Accounting Standards Codification -Section 50 -Paragraph 1B -Publisher FASB -URI https://asc.fasb.org/1943274/2147477270/942-505-50-1B + Details
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