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Benefit Plans (Tables) | 9 Months Ended
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Sep. 30, 2017
Benefit Plans |
Schedule of components of net periodic benefit cost |
|  | 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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- 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://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (h) -URI http://asc.fasb.org/extlink&oid=65897934&loc=d3e1928-114920 + Details
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