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Employee Benefit Plans (Fair Value of Plan Assets) (Details) - USD ($)
$ in Thousands
Dec. 31, 2015
Dec. 31, 2014
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets $ 67,168 $ 73,431
Fair Value, Inputs, Level 1 [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets 65,866 70,111
Fair Value, Inputs, Level 2 [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets 1,302 3,320
Common Stock [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets 34,466 35,337
Common Stock [Member] | Fair Value, Inputs, Level 1 [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets 34,466 35,337
Common Stock [Member] | Fair Value, Inputs, Level 2 [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets 0 0
Money Market Funds [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets 1,302 3,320
Money Market Funds [Member] | Fair Value, Inputs, Level 1 [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets 0 0
Money Market Funds [Member] | Fair Value, Inputs, Level 2 [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets 1,302 3,320
Mututal Funds [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets 23,576 26,671
Mututal Funds [Member] | Fair Value, Inputs, Level 1 [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets 23,576 26,671
Mututal Funds [Member] | Fair Value, Inputs, Level 2 [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets 0 0
Fixed Income Securities [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets 7,824 8,103
Fixed Income Securities [Member] | Fair Value, Inputs, Level 1 [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets 7,824 8,103
Fixed Income Securities [Member] | Fair Value, Inputs, Level 2 [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Fair value of plan assets $ 0 $ 0