Pension Plans And Postretirement Obligations (Components Of Net Periodic Cost (Gain)) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 56		$ 56
Interest cost	191	$ 201	391	$ 413
Expected return on plan assets	(223)	(216)	(447)	(441)
Amortization of prior service cost	14	14	28	28
Recognized actuarial loss	237	178	474	355
Net periodic benefit cost (benefit)	275	177	502	355
Postretirement Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	27	3	30	6
Interest cost	23	27	49	59
Expected return on plan assets	(8)	(7)	(16)	(15)
Amortization of prior service cost	(34)	(49)	(23)	(98)
Recognized actuarial loss	62	6	42	12
Net periodic benefit cost (benefit)	$ 70	$ (20)	$ 82	$ (36)