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Employee Benefit Plans (Schedule of Amounts that Will Be Amortized from Other Comprehensive Loss) (Details)
$ in Thousands
Dec. 31, 2020
USD ($)
Pension [Member]  
Defined Benefit Plan Disclosure [Line Items]  
Defined benefit plan, Net actuarial loss $ 1,510
Defined benefit plan, Total 1,510
SERP [Member]  
Defined Benefit Plan Disclosure [Line Items]  
Defined benefit plan, Prior service costs (2)
Defined benefit plan, Net actuarial loss 302
Defined benefit plan, Total $ 300