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Employee Benefit Plans (Other Changes In Other Comprehensive Income (Loss)) (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2019 | Dec. 31, 2018
Defined Benefit Pension Plan [Member] |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Other comprehensive income (loss) at December 31, prior year | $ (88,580) | $ (86,788)
Net gain (loss) arising during period | (16,927) | (8,631)
Actuarial loss | 8,042 | 6,839
Curtailment loss recognized |  |
Other comprehensive income (loss) at December 31, current year | (97,466) | (88,580)
Post-Retirement Plan [Member] |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Other comprehensive income (loss) at December 31, prior year | 3,242 | (4,260)
Net gain (loss) arising during period | 582 | 7,985
Prior Service credit (cost) arising during period |  |
Actuarial loss | (155) | 94
Prior service cost | (577) | (577)
Other comprehensive income (loss) at December 31, current year | $ 3,092 | $ 3,242

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- 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 Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 10A -Subparagraph (i-k) -URI http://asc.fasb.org/extlink&oid=118930883&loc=SL7669646-108580 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=118930883&loc=SL7669686-108580 + Details
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- Definition Amount of (increase) decrease in benefit obligation of defined benefit plan from event reducing expected years of future service of present employees or eliminating accrual of benefits for some or all future services of present employees. + 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 (a)(10) -URI http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920 + Details
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