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Pension & Postretirement Medical Benefit Plans (Tables) | 6 Months Ended
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Jun. 30, 2019
Compensation And Retirement Disclosure [Abstract] |
Schedule of Defined Benefit Pension Plan | The following table presents the net periodic pension cost for WesBanco’s Defined Benefit Pension Plan (the “Plan”) and the related components:
|  | For the Three Months Ended June 30, |  |  | For the Six Months Ended June 30, |
(unaudited, in thousands) |  | 2019 |  |  | 2018 |  |  | 2019 |  |  | 2018 |
Service cost – benefits earned during year |  | $ | 560 |  |  | $ | 707 |  |  | $ | 1,114 |  |  | $ | 1,406 |
Interest cost on projected benefit obligation |  |  | 1,313 |  |  |  | 1,228 |  |  |  | 2,611 |  |  |  | 2,442 |
Expected return on plan assets |  |  | (2,211 | ) |  |  | (2,390 | ) |  |  | (4,398 | ) |  |  | (4,753 | )
Amortization of prior service cost |  |  | 6 |  |  |  | 7 |  |  |  | 13 |  |  |  | 13 |
Amortization of net loss |  |  | 808 |  |  |  | 758 |  |  |  | 1,607 |  |  |  | 1,508 |
Net periodic pension cost |  | $ | 476 |  |  | $ | 310 |  |  | $ | 947 |  |  | $ | 616 |

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