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Employee Benefit Plans (Schedule of Net Funded Status) (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Defined Benefit Plan Disclosure [Line Items]    
Defined Benefit Plan, Fair Value of Plan Assets, Beginning Balance $ 43,056  
Defined Benefit Plan, Fair Value of Plan Assets, Ending Balance 50,829 $ 43,056
Pension [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Defined Benefit Plan, Benefit Obligation, Beginning Balance 42,022 44,975
Defined Benefit Plan, Service Cost 265 324
Defined Benefit Plan, Interest Cost 1,748 1,586
Defined Benefit Plan, Other Changes 7,981
Actuarial losses/(gains) 979 (3,049)
Defined Benefit Plan, Benefits Paid (2,000) (1,814)
Defined Benefit Plan, Benefit Obligation, Ending Balance 50,995 42,022
Defined Benefit Plan, Fair Value of Plan Assets, Beginning Balance 43,056 47,216
Defined Benefit Plan, Actual Return on Plan Assets 7,773 (2,346)
Defined Benefit Plan, Contributions by Employer 2,000
Defined Benefit Plan, Benefits Paid (2,000) (1,814)
Defined Benefit Plan, Fair Value of Plan Assets, Ending Balance 50,829 43,056
Defined Benefit Plan, Unfunded Status of Plan (166) 1,034
SERP [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Defined Benefit Plan, Benefit Obligation, Beginning Balance 7,544 7,613
Defined Benefit Plan, Service Cost 120 112
Defined Benefit Plan, Interest Cost 272 321
Defined Benefit Plan, Other Changes
Actuarial losses/(gains) 994 (276)
Defined Benefit Plan, Benefits Paid (283) (226)
Defined Benefit Plan, Benefit Obligation, Ending Balance 8,647 7,544
Defined Benefit Plan, Fair Value of Plan Assets, Beginning Balance
Defined Benefit Plan, Actual Return on Plan Assets
Defined Benefit Plan, Contributions by Employer 283 226
Defined Benefit Plan, Benefits Paid (283) (226)
Defined Benefit Plan, Fair Value of Plan Assets, Ending Balance
Defined Benefit Plan, Unfunded Status of Plan $ (8,647) $ (7,544)