Retirement Plans (Schedule Of Employer Contribution) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Expected employer contributions	$ 8,400	$ 0
SERP [Member]
Defined Benefit Plan Disclosure [Line Items]
Expected employer contributions	143	144
Other Postretirement Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Expected employer contributions	$ 84	$ 202