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Benefit Plans | 9 Months Ended
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Sep. 30, 2017
Benefit Plans |
Benefit Plans | 13. Benefit Plans The following table sets forth the components of net periodic benefit cost for the three and nine months ended September 30, 2017 and 2016, recorded as a component of salaries and employee benefits in the unaudited consolidated statements of income:
|  | Pension Benefits |  | Other Benefits
(dollars in thousands) |  | 2017 |  | 2016 |  | 2017 |  | 2016
Three Months Ended September 30, |  |  |  |  |  |  |  |  |  |  |  |
Service cost |  | $ | 157 |  | $ | 215 |  | $ | 179 |  | $ | 193
Interest cost |  |  | 2,041 |  |  | 2,172 |  |  | 201 |  |  | 210
Expected return on plan assets |  |  | (1,242) |  |  | (1,180) |  |  | — |  |  | —
Prior service credit |  |  | — |  |  | — |  |  | (107) |  |  | (107)
Recognized net actuarial loss |  |  | 2,000 |  |  | 1,774 |  |  | — |  |  | —
Total net periodic benefit cost |  | $ | 2,956 |  | $ | 2,981 |  | $ | 273 |  | $ | 296
Nine Months Ended September 30, |  |  |  |  |  |  |  |  |  |  |  |
Service cost |  | $ | 472 |  | $ | 644 |  | $ | 537 |  | $ | 577
Interest cost |  |  | 6,124 |  |  | 6,486 |  |  | 603 |  |  | 631
Expected return on plan assets |  |  | (3,726) |  |  | (3,515) |  |  | — |  |  | —
Prior service credit |  |  | — |  |  | — |  |  | (322) |  |  | (321)
Recognized net actuarial loss |  |  | 5,998 |  |  | 5,319 |  |  | — |  |  | —
Total net periodic benefit cost |  | $ | 8,868 |  | $ | 8,934 |  | $ | 818 |  | $ | 887

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