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Pensions and Other Postretirement Benefits (Unrecognized Actuarial Gains and Losses) (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Unrecognized net actuarial loss	$ 5,237	$ 8,169
Unrecognized prior service cost	9	2
Unamortized transition obligation	2	3
Benefit plans, accumulated other comprehensive income (loss) before tax	5,248	8,174
OPEB Plans
Defined Benefit Plan Disclosure [Line Items]
Unrecognized net actuarial loss	2,095	2,370
Unrecognized prior service cost	0	0
Unamortized transition obligation	0	0
Benefit plans, accumulated other comprehensive income (loss) before tax	$ 2,095	$ 2,370

X

- Definition

Amount, before tax, of accumulated other comprehensive (income) loss for defined benefit plan, that has not been recognized in net periodic benefit cost (credit).

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 10A
-Subparagraph (i-k)
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- Definition

Amount, before tax, of accumulated other comprehensive income (loss) for gain (loss) of defined benefit plan, that has not been recognized in net periodic benefit (cost) credit.

+ References

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-Publisher FASB
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-SubTopic 20
-Section 50
-Paragraph 1
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- Definition

Amount, before tax, of accumulated other comprehensive (income) loss for cost (credit) of benefit change attributable to participants' prior service from plan amendment or plan initiation of defined benefit plan, that has not been recognized in net periodic benefit cost (credit).

+ References

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-Publisher FASB
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- Definition

Amount, before tax, of accumulated other comprehensive income (loss) for transition asset (obligation) of defined benefit plan, that has not been recognized in net periodic benefit (cost) credit.

+ References

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