Pension Plans And Other Postretirement Benefits (Summary Of Projected Benefit Obligation And Plan Assets) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Defined Benefit Plan Disclosure [Line Items]
Employer contributions	$ 400	$ 400
Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Benefit obligation, beginning of year	18,493	19,908
Interest cost	806	756
Actuarial losses (income)	2,918	(1,240)
Benefit payments	(979)	(931)
Benefit obligation, end of year	21,238	18,493
Fair value of plan assets, beginning of year	13,116	12,443
Actual return on plan	825	1,084
Employer contributions	219	520
Fair value of plan assets, end of year	13,181	13,116
Unfunded status at end of year	(8,057)	(5,377)
Postretirement Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Benefit obligation, beginning of year	2,842	3,655
Service cost	12	13
Interest cost	119	112
Actuarial losses (income)	32	(805)
Benefit payments	(141)	(133)
Benefit obligation, end of year	2,864	2,842
Fair value of plan assets, beginning of year	2,206	2,221
Actual return on plan	(57)	(16)
Employer contributions	85	134
Fair value of plan assets, end of year	2,093	2,206
Unfunded status at end of year	$ (771)	$ (636)