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Comprehensive Income Reclassification out of Accumulated Other Comprehensive Income (Details) - USD ($) $ in Thousands | 3 Months Ended
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Mar. 31, 2019 | Mar. 31, 2018
Reclassification out of Accumulated Other Comprehensive Income [Line Items] |  |
Provision for income taxes | $ 2,150 | $ 2,058
Net Income | (163) | 45
Reclassification out of Accumulated Other Comprehensive Income | Accretion of Net Retirement Plan Prior Service (Cost) Credit |  |
Reclassification out of Accumulated Other Comprehensive Income [Line Items] |  |
Other nonoperating income (expense) | (56) | (1)
Reclassification out of Accumulated Other Comprehensive Income | Amortization of Net Retirement Plan Actuarial Gain (Loss) |  |
Reclassification out of Accumulated Other Comprehensive Income [Line Items] |  |
Other nonoperating income (expense) | (163) | 60
Reclassification out of Accumulated Other Comprehensive Income | Accumulated Defined Benefit Plans Adjustment |  |
Reclassification out of Accumulated Other Comprehensive Income [Line Items] |  |
Total before tax | (219) | 59
Provision for income taxes | 56 | (14)
Net Income | $ (163) | $ 45

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- Definition Amount, before tax, of income (loss) attributable to parent. Includes, but is not limited to, income (loss) from continuing operations, discontinued operations and equity method investments. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.20) -URI http://asc.fasb.org/extlink&oid=115205541&loc=SL114868664-224227 + Details
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