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EMPLOYEE BENEFIT PLANS (Tables) | 9 Months Ended
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Sep. 30, 2019
Defined Benefit Pension Plan [Member] |
Defined Benefit Plan Disclosure [Line Items] |
Schedule of Net Benefit Costs |
| Three Months Ended September 30, |  | Nine Months Ended September 30,
(Dollars in Thousands) | 2019 |  | 2018 |  | 2019 |  | 2018
Service Cost | $ | 1,529 |  | $ | 1,721 |  | $ | 4,587 |  | $ | 5,163
Interest Cost |  | 1,545 |  |  | 1,415 |  |  | 4,635 |  |  | 4,246
Expected Return on Plan Assets |  | (2,382) |  |  | (2,391) |  |  | (7,146) |  |  | (7,173)
Prior Service Cost Amortization |  | 4 |  |  | 50 |  |  | 12 |  |  | 150
Net Loss Amortization |  | 965 |  |  | 918 |  |  | 2,895 |  |  | 2,754
Net Periodic Benefit Cost | $ | 1,661 |  | $ | 1,713 |  | $ | 4,983 |  | $ | 5,140
Discount Rate |  | 4.43% |  |  | 3.71% |  |  | 4.43% |  |  | 3.71%
Long-term Rate of Return on Assets |  | 7.25% |  |  | 7.25% |  |  | 7.25% |  |  | 7.25%
Supplemental Executive Retirement Plan [Member] |
Defined Benefit Plan Disclosure [Line Items] |
Schedule of Net Benefit Costs |
The components of the net periodic benefit cost for the Company's SERP were as follows:
| Three Months Ended September 30, |  | Nine Months Ended September 30,
(Dollars in Thousands) | 2019 |  | 2018 |  | 2019 |  | 2018
Interest Cost | $ | 87 |  | $ | 57 |  | $ | 261 |  | $ | 170
Net Loss Amortization |  | 190 |  |  | 406 |  |  | 570 |  |  | 1,220
Net Periodic Benefit Cost | $ | 277 |  | $ | 463 |  | $ | 831 |  | $ | 1,390
Discount Rate |  | 4.23% |  |  | 3.53% |  |  | 4.23% |  |  | 3.53%

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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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=108410482&loc=d3e1928-114920 + Details
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