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Employee Benefit Plans (Tables) | 3 Months Ended
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Mar. 31, 2017
Compensation and Retirement Disclosure [Abstract] |
Components of benefit expense | The components of the expense consisted of the following:
|  | Three Months Ended March 31,
(in thousands) |  | 2017 |  | 2016
Interest cost |  | $ | 6,486 |  |  | $ | 6,770 |
Expected return on plan assets, net of expenses |  | (4,360 | ) |  | (4,597 | )
Amortization of actuarial loss |  | 1,084 |  |  | 998 |
Total for defined benefit plans |  | 3,210 |  |  | 3,171 |
Multi-employer plans |  | 74 |  |  | 43 |
SERPs |  | 257 |  |  | 279 |
Defined contribution plan |  | 2,904 |  |  | 2,188 |
Net periodic benefit cost |  | $ | 6,445 |  |  | $ | 5,681 |

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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=58740216&loc=d3e1928-114920 + Details
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