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Defined Benefit Plans | 6 Months Ended
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Jun. 30, 2018
Defined Benefit Pension Plans And Defined Benefit Postretirement Plans Disclosure [Abstract] |
Defined Benefit Plans |
(8) | Defined Benefit Plans
Mid Penn has an unfunded noncontributory defined benefit retirement plan for directors. The plan provides defined benefits based on years of service. Mid Penn also sponsors a defined benefit health care plan that provides post-retirement medical benefits and life insurance to qualifying full-time employees. These health care and life insurance plans are noncontributory and each plan uses a December 31 measurement date. As a result of the acquisition of Scottdale on January 8, 2018, Mid Penn has assumed a noncontributory defined benefit pension plan covering certain former employees of Scottdale. Mid Penn estimates it will contribute $600,000 to the defined benefit pension plan in 2018. A December 31 measurement date for the plan is used. The components of net periodic benefit costs from these defined benefit plans are as follows:
| Three Months Ended June 30, |
(Dollars in thousands) | Pension Benefits |  |  | Other Benefits |
| 2018 |  |  | 2017 |  |  | 2018 |  |  | 2017 |
Service cost | $ | 153 |  |  | $ | 9 |  |  | $ | 1 |  |  | $ | 1 |
Interest cost |  | 205 |  |  |  | 11 |  |  |  | 5 |  |  |  | 5 |
Expected return on plan assets |  | (211 | ) |  |  | - |  |  |  | - |  |  |  | - |
Amortization (accretion) of prior service cost |  | 4 |  |  |  | 4 |  |  |  | (5 | ) |  |  | (6 | )
Settlement gain |  | (380 | ) |  |  | - |  |  |  | - |  |  |  | - |
Net periodic benefit (income) expense | $ | (229 | ) |  | $ | 24 |  |  | $ | 1 |  |  | $ | - |
| Six Months Ended June 30, |
(Dollars in thousands) | Pension Benefits |  |  | Other Benefits |
| 2018 |  |  | 2017 |  |  | 2018 |  |  | 2017 |
Service cost | $ | 161 |  |  | $ | 18 |  |  | $ | 2 |  |  | $ | 2 |
Interest cost |  | 215 |  |  |  | 22 |  |  |  | 9 |  |  |  | 10 |
Expected return on plan assets |  | (211 | ) |  |  | - |  |  |  | - |  |  |  | - |
Amortization (accretion) of prior service cost |  | 8 |  |  |  | 7 |  |  |  | (10 | ) |  |  | (12 | )
Settlement gain |  | (380 | ) |  |  | - |  |  |  | - |  |  |  | - |
Net periodic benefit (income) expense | $ | (207 | ) |  | $ | 47 |  |  | $ | 1 |  |  | $ | - |

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- References No definition available. + Details
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- Definition The entire disclosure for pension and other postretirement benefits. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -URI http://asc.fasb.org/topic&trid=2235017 + Details
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