Pension and Other Postretirement Benefits (Amounts Recognized in the Consolidated Financial Statements) (Details) - Other Postretirement Benefits - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Accrued post retirement liability: Current portion	$ 330	$ 331
Accrued post retirement liability: Long term portion	5,694	5,805
Pre-tax accumulated other comprehensive loss – unamortized post-retirement healthcare costs	1,666	1,814
Net amount recognized	$ 4,358	$ 4,322

Amount of asset (liability), recognized in statement of financial position, for defined benefit pension and other postretirement plans.

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Amount, before tax, after reclassification adjustment, of increase (decrease) in accumulated other comprehensive income from gain (loss) of defined benefit plan.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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Amount of liability, recognized in statement of financial position, for defined benefit pension and other postretirement plans, classified as current.

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Amount of liability, recognized in statement of financial position, for defined benefit pension and other postretirement plans, classified as noncurrent.

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