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Employee Pension Plans | 6 Months Ended
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Jun. 30, 2019
Employee Pension Plans [Abstract] |
Employee Pension Plans | (13) Employee Pension Plans The Company has a defined benefit pension plan and an unfunded supplemental retirement plan. Effective June 1, 2004, all benefit accruals under these plans were frozen; however, the current vested benefit was preserved. The pension disclosure presented below includes aggregated amounts for both of the Company’s plans. The following table sets forth a summary of the net periodic benefit cost for the three and six months ended June 30, 2019 and 2018:
| Three Months Ended June 30, |  | Six Months Ended June 30,
(in thousands) | 2019 |  | 2018 |  | 2019 |  | 2018
Interest cost | $ | 948 |  | $ | 883 |  | $ | 1,896 |  | $ | 1,766
Expected return on plan assets |  | (1,043) |  |  | (1,077) |  |  | (2,086) |  |  | (2,154)
Amortization of net loss |  | 463 |  |  | 513 |  |  | 926 |  |  | 1,026
Other |  | 225 |  |  | 213 |  |  | 450 |  |  | 426
Net periodic benefit cost | $ | 593 |  | $ | 532 |  | $ | 1,186 |  | $ | 1,064
The Company contributed $2.0 million and $1.4 million to its defined benefit pension plan during each of the six-month periods ended June 30, 2019 and 2018, respectively, and expects to contribute an additional $2.6 million by the end of 2019.

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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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