Pension Plans And Other Postretirement Benefit Plans (Deferred Compensation) (Details) (Deferred Compensation, Excluding Share-based Payments and Retirement Benefits [Member], USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items]
Deferred compensation assets and liabilities	$ 8,806	$ 8,653
Executive Officer [Member]
Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items]
Deferred compensation, earlier of retirement, terminaiton, disability or death, percent	75.00%
Deferred compensation incentvie payments, percent	100.00%