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Defined Benefit Plans (Tables) | 9 Months Ended
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Sep. 30, 2020
Defined Benefit Plans And Other Postretirement Benefit Plans Disclosures [Abstract] |
Schedule of Net Periodic Benefit Costs | The components of net periodic benefit costs from these defined benefit plans are as follows:
| Three Months Ended September 30, |
(Dollars in thousands) | Pension Benefits |  |  | Other Benefits |
| 2020 |  |  | 2019 |  |  | 2020 |  |  | 2019 |
Service cost | $ | 32 |  |  | $ | 36 |  |  | $ | 1 |  |  | $ | - |
Interest cost |  | 53 |  |  |  | 65 |  |  |  | 3 |  |  |  | 5 |
Expected return on plan assets |  | (68 | ) |  |  | (63 | ) |  |  | — |  |  |  | — |
Accretion of prior service cost |  | — |  |  |  | — |  |  |  | (5 | ) |  |  | (5 | )
Amortization of net gain |  | — |  |  |  | (15 | ) |  |  | (1 | ) |  |  | (1 | )
Settlement loss (gain) |  | — |  |  |  | — |  |  |  | — |  |  |  | — |
Net periodic benefit expense (income) | $ | 17 |  |  | $ | 23 |  |  | $ | (2 | ) |  | $ | (1 | )
| Nine Months Ended September 30, |
(Dollars in thousands) | Pension Benefits |  |  | Other Benefits |
| 2020 |  |  | 2019 |  |  | 2020 |  |  | 2019 |
Service cost | $ | 96 |  |  | $ | 107 |  |  | $ | 2 |  |  | $ | 2 |
Interest cost |  | 158 |  |  |  | 194 |  |  |  | 9 |  |  |  | 13 |
Expected return on plan assets |  | (205 | ) |  |  | (190 | ) |  |  | — |  |  |  | — |
Accretion of prior service cost |  | — |  |  |  | — |  |  |  | (15 | ) |  |  | (15 | )
Amortization of net gain |  | — |  |  |  | (44 | ) |  |  | (1 | ) |  |  | (3 | )
Settlement loss (gain) |  | 22 |  |  |  | (37 | ) |  |  | — |  |  |  | — |
Net periodic benefit expense (income) | $ | 71 |  |  | $ | 30 |  |  | $ | (5 | ) |  | $ | (3 | )
Service costs are reported as a component of salaries and employee benefits on the Consolidated Statements of Income, while interest costs, expected return on plan assets, amortization (accretion) of prior service cost, and amortization of (gain) loss are reported as a component of other income.

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- Definition Tabular disclosure of the components of net benefit costs for pension plans and/or other employee benefit plans including service cost, interest cost, expected return on plan assets, gain (loss), prior service cost or credit, transition asset or obligation, and gain (loss) recognized due to settlements or curtailments. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (h) -URI http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920 + Details
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