Retirement Plans (Estimated Amounts That Will Be Amortized From Accumulated Other Comprehensive Income Into Net Periodic Benefit Cost) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014
Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Actuarial gain (loss)	$ 7,845
Prior service cost (credit)	0
Estimated amounts to be amortized	7,845
SERP [Member]
Defined Benefit Plan Disclosure [Line Items]
Actuarial gain (loss)	28
Prior service cost (credit)	0
Estimated amounts to be amortized	28
Other Postretirement Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Actuarial gain (loss)	(690)
Prior service cost (credit)	0
Estimated amounts to be amortized	$ (690)