Employee Benefit Plans (Schedule of Discount and Compensation Rates) (Details)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Pension Benefit Plan [Member]
Weighted Average Assumptions:
Expected Return on Plan Assets	7.50%	7.50%	7.50%
Discount Rate for:
Benefit Obligation	4.06%	4.26%	3.91%
Benefit Cost	4.26%	3.91%	4.87%
Compensation Increase for:
Benefit Obligation	3.00%	3.00%	3.00%
Benefit Cost	3.00%	3.00%	3.00%
Other Benefits Plan [Member]
Weighted Average Assumptions:
Expected Return on Plan Assets	7.50%	7.50%	7.50%
Discount Rate for:
Benefit Obligation	4.06%	4.26%	3.91%
Benefit Cost	4.26%	3.91%	4.87%
Compensation Increase for:
Benefit Obligation	3.00%	3.00%	3.00%
Benefit Cost	3.00%	3.00%	3.00%