Retirement Plans (Schedule of Weighted-Average Allocation of Plan Assets by Asset Category and of Weighted-Average Target Investment Allocation Ranges fro the Plans) (Details)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Defined Benefit Plan, Target Plan Asset Allocations	100.00%
Defined Benefit Plan, Actual Plan Asset Allocations	100.00%	100.00%
Equity securities
Defined Benefit Plan, Target Plan Asset Allocations	31.80%
Defined Benefit Plan, Actual Plan Asset Allocations	33.50%	31.20%
Debt securities
Defined Benefit Plan, Target Plan Asset Allocations	50.00%
Defined Benefit Plan, Actual Plan Asset Allocations	45.50%	47.90%
Other
Defined Benefit Plan, Target Plan Asset Allocations	18.20%
Defined Benefit Plan, Actual Plan Asset Allocations	21.00%	20.90%