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Employee Benefit Plans (Fair Value of Plan Assets) (Details) - USD ($)
$ in Thousands
Dec. 31, 2020
Dec. 31, 2019
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets $ 76,940 $ 75,321
Fair Value, Inputs, Level 1 [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets 27,033 26,916
Fair Value Measured at Net Asset Value Per Share [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets 49,907 48,405
Common Stock [Member] | Fair Value, Inputs, Level 1 [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets 9,185 8,307
Fixed Income Securities [Member] | Fair Value, Inputs, Level 1 [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets 17,848 18,609
Money Market Funds [Member] | Fair Value Measured at Net Asset Value Per Share [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets 915 789
Mututal Funds [Member] | Fair Value Measured at Net Asset Value Per Share [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets $ 48,992 $ 47,616