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Employee Pension Plans (Components of Net Periodic Benefit Cost) (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2019 | Jun. 30, 2018 | Jun. 30, 2019 | Jun. 30, 2018
Summary of net periodic benefit cost |  |  |  |
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
Company contribution |  |  | 2,000 | $ 1,400
Expected contributions remainder of current fiscal year | $ 2,600 |  | $ 2,600 |

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- Definition Amount of expected return (loss) recognized in net periodic benefit (cost) credit, calculated based on expected long-term rate of return and market-related value of plan assets of defined benefit plan. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 55 -Paragraph 17 -URI http://asc.fasb.org/extlink&oid=112275985&loc=d3e4179-114921 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (h)(3) -URI http://asc.fasb.org/extlink&oid=108410482&loc=d3e1928-114920 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 6 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=108410482&loc=d3e2709-114920 + Details
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