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Employee Benefit Plans (Schedule of Defined Benefit Plan Amounts Recognized in Other Comprehensive Loss) (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Share-based Compensation [Abstract] |  |  |
Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), Reclassification Adjustment from AOCI, before Tax | $ (1,092) | $ 838 | $ 157
Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), Reclassification Adjustment from AOCI, Tax | 254 | (1,211) | (58)
Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), Reclassification Adjustment from AOCI, after Tax | (838) | (373) | $ 99
Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, before Tax | 7,652 | 6,560 |
Underfunded pension liability, deferred tax benefit | (1,781) | (1,527) |
Accumulated Other Comprehensive (Income) Loss, Defined Benefit Plan, after Tax | $ 5,871 | $ 5,033 |

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