Employee Benefit Plans (Weighted Assumptions) (Details)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
RELS Pension Plan [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Weighted average discount rate	4.09%
Discount rate	4.44%
SERP Plans
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Weighted average discount rate	3.85%	4.72%	3.89%
Discount rate	4.20%	3.85%
Restoration Plan
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Weighted average discount rate	3.98%	4.82%	4.02%
Discount rate	4.32%	3.98%