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Employee Benefit Plans | 3 Months Ended
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Mar. 31, 2019
Retirement Benefits [Abstract] |
Employee Benefit Plans | Employee Benefit Plans We sponsor noncontributory defined benefit pension plans and non-qualified Supplemental Executive Retirement Plans ("SERPs"). The accrual for future benefits has been frozen in our defined benefit pension plans and SERPs. We sponsor a defined contribution plan covering substantially all non-union and certain union employees. We match a portion of employees' voluntary contributions to this plan. The components of the employee benefit plans expense consisted of the following:
|  | Three Months Ended March 31,
(in thousands) |  | 2019 |  | 2018
Interest cost |  | $ | 5,800 |  |  | $ | 5,925 |
Expected return on plan assets, net of expenses |  | (5,058 | ) |  | (5,732 | )
Amortization of actuarial loss and prior service cost |  | 572 |  |  | 921 |
Total for defined benefit pension plans |  | 1,314 |  |  | 1,114 |
Multi-employer plans |  | 41 |  |  | 47 |
SERPs |  | 258 |  |  | 274 |
Defined contribution plan |  | 2,995 |  |  | 2,793 |
Net periodic benefit cost |  | 4,608 |  |  | 4,228 |
Allocated to discontinued operations |  | — |  |  | (203 | )
Net periodic benefit cost — continuing operations |  | $ | 4,608 |  |  | $ | 4,025 |
We contributed $0.3 million to fund current benefit payments for our SERPs and $1.7 million for our defined benefit pension plans during the three months ended March 31, 2019. During the remainder of 2019, we anticipate contributing an additional $1.0 million to fund the SERPs' benefit payments and an additional $16.9 million to fund our qualified defined benefit pension plans.

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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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