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Noninterest Income and Noninterest Expense | 9 Months Ended
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Sep. 30, 2024
Noninterest Income and Noninterest Expense |
Noninterest Income and Noninterest Expense | 15. Noninterest Income and Noninterest Expense ​ Benefit Plans ​ The following table sets forth the components of net periodic benefit cost for the Company’s pension and postretirement benefit plans for the three and nine months ended September 30, 2024 and 2023: ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Income line item where recognized in | ​ | Pension Benefits | ​ | Other Benefits
(dollars in thousands) | ​ | the consolidated statements of income |  | 2024 |  | 2023 |  | 2024 |  | 2023
Three Months Ended September 30, | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Service cost | ​ | Salaries and employee benefits | ​ | $ | — | ​ | $ | — | ​ | $ | 155 | ​ | $ | 136
Interest cost | ​ | Other noninterest expense | ​ | ​ | 1,950 | ​ | ​ | 2,053 | ​ | ​ | 182 | ​ | ​ | 171
Expected return on plan assets | ​ | Other noninterest expense | ​ | ​ | (878) | ​ | ​ | (883) | ​ | ​ | — | ​ | ​ | —
Recognized net actuarial loss (gain) | ​ | Other noninterest expense | ​ | ​ | 503 | ​ | ​ | 719 | ​ | ​ | (322) | ​ | ​ | (379)
Total net periodic benefit cost | ​ | ​ | ​ | $ | 1,575 | ​ | $ | 1,889 | ​ | $ | 15 | ​ | $ | (72)
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Nine Months Ended September 30, | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Service cost | ​ | Salaries and employee benefits | ​ | $ | — | ​ | $ | — | ​ | $ | 429 | ​ | $ | 430
Interest cost | ​ | Other noninterest expense | ​ | ​ | 5,761 | ​ | ​ | 6,171 | ​ | ​ | 604 | ​ | ​ | 611
Expected return on plan assets | ​ | Other noninterest expense | ​ | ​ | (2,634) | ​ | ​ | (2,648) | ​ | ​ | — | ​ | ​ | —
Recognized net actuarial loss (gain) | ​ | Other noninterest expense | ​ | ​ | 1,509 | ​ | ​ | 2,157 | ​ | ​ | (966) | ​ | ​ | (1,137)
Total net periodic benefit cost | ​ | ​ | ​ | $ | 4,636 | ​ | $ | 5,680 | ​ | $ | 67 | ​ | $ | (96)
​ Leases ​ The Company recognized operating lease income related to lease payments of $1.6 million for both the three months ended September 30, 2024 and 2023, and $4.7 million for both the nine months ended September 30, 2024 and 2023. In addition, the Company recognized $1.5 million of lease income related to variable lease payments for both the three months ended September 30, 2024 and 2023, and $4.7 million and $4.8 million for the nine months ended September 30, 2024 and 2023, respectively.

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