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Employee Benefit Plans (Narratives) (Details) - USD ($) | 12 Months Ended
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Dec. 31, 2018 | Dec. 31, 2017
Employee Benefit Plans Disclosure [Abstract] |  |
Defined Contribution Plan Payments In Current Fiscal Year | $ 500,000 | $ 600,000
Defined Benefit Plan, Accumulated Benefit Obligation | 18,700,000 | 21,100,000
Defined Benefit Plan, Estimated Future Employer Contributions in Next Fiscal Year | $ 700,000 |
Defined Benefit Plan Increase (Decrease) In Discount Rate Percentage | 1.00% |
Defined Benefit Plan Increase (Decrease) In Discount Rate Value | $ 9,000 |
Defined Benefit Plan Increase (Decrease) In Asset Return Percentage | 1.00% |
Defined Benefit Plan Average Remaining Work Lifetime | 15 years |
Defined Benefit Plan Increase (Decrease) In Asset Return Value | $ 178,000,000 |
Defined Benefit Plan Payments In Current Fiscal Year | 741,000 | 689,000
Defined Benefit Plans Liabilities Noncurrent | 900,000 |
Unrealized losses on pension benefit obligation, net of tax | (226,000) | $ (1,500,000)
Defined Benefit Plan, Estimated Future Benefit Payments [Abstract] |  |
Expected Future Benefit Payments, 2019 | 600,000 |
Expected Future Benefit Payments, 2020 | 500,000 |
Expected Future Benefit Payments, 2021 | 500,000 |
Expected Future Benefit Payments, 2022 | 600,000 |
Expected Future Benefit Payments, 2023 | 700,000 |
Expected Future Benefit Payments years, 2024-2028 | $ 4,000,000 |

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- Definition Amount of actuarial present value of benefits attributed to employee service rendered, excluding assumptions about future compensation level. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=108410482&loc=d3e1928-114920 + Details
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- Definition Amount of benefits for defined benefit plan expected to be paid in next fiscal year following latest fiscal year. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=108410482&loc=d3e1928-114920 + Details
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