Subordinated Notes	6 Months Ended
Jun. 30, 2026
Debt Disclosure [Abstract]
Subordinated Notes	Subordinated Notes On August 29, 2025, Horizon completed the offering and sale of $100.0 million in aggregate principal amount of its 7.000% Fixed-to-Floating Rate Subordinated Notes due 2035 (the “2035 Notes”). The 2035 Notes were issued by Horizon at a price equal to 100% of their face amount. Horizon used the net proceeds from the offering for general corporate purposes, including in support of the repositioning of its balance sheet, and to redeem approximately $56.5 million in aggregate principal amount of its 5.625% fixed-to-floating rate subordinated notes due 2030, which was completed on October 1, 2025. The 2035 Notes will bear interest at a fixed interest rate of 7.000% per annum until September 15, 2030, after which time the interest rate will reset quarterly to a floating rate equal to a benchmark rate, which is expected to be the then current three-month term Secured Overnight Financing Rate (SOFR) plus 360 basis points until the 2035 Notes' maturity on September 15, 2035. The 2035 Notes are redeemable by Horizon, in whole or in part, on any interest payment date on or after September 15, 2030, and at any time upon the occurrence of certain events, subject to the receipt of the approval of the Board of Governors of the Federal Reserve System to the extent then required under applicable laws or regulations, including capital regulations. The 2035 Notes are intended to qualify as Tier 2 capital of the Company for regulatory capital purposes. The total balance, net of unamortized issuance costs, of the 2035 Notes was $98.3 million and $98.2 million at June 30, 2026 and December 31, 2025, respectively. Total unamortized debt issuance costs were $1.7 million and $1.8 million at June 30, 2026 and December 31, 2025, respectively.

On August 29, 2025, Horizon completed the offering and sale of $100.0 million in aggregate principal amount of its 7.000% Fixed-to-Floating Rate Subordinated Notes due 2035 (the “2035 Notes”). The 2035 Notes were issued by Horizon at a price equal to 100% of their face amount. Horizon used the net proceeds from the offering for general corporate purposes, including in support of the repositioning of its balance sheet, and to redeem approximately $56.5 million in aggregate principal amount of its 5.625% fixed-to-floating rate subordinated notes due 2030, which was completed on October 1, 2025. The 2035 Notes will bear interest at a fixed interest rate of 7.000% per annum until September 15, 2030, after which time the interest rate will reset quarterly to a floating rate equal to a benchmark rate, which is expected to be the then current three-month term Secured Overnight Financing Rate (SOFR) plus 360 basis points until the 2035 Notes' maturity on September 15, 2035. The 2035 Notes are redeemable by Horizon, in whole or in part, on any interest payment date on or after September 15, 2030, and at any time upon the occurrence of certain events, subject to the receipt of the approval of the Board of Governors of the Federal Reserve System to the extent then required under applicable laws or regulations, including capital regulations. The 2035 Notes are intended to qualify as Tier 2 capital of the Company for regulatory capital purposes.