Employee Benefit Plans (Components Of Net Periodic Benefit Cost) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 171	$ 155	$ 342	$ 309
Interest cost	359	381	718	762
Expected return on plan assets	(638)	(571)	(1,276)	(1,226)
Amortization of prior service cost	(1)	(1)	(2)	(1)
Amortization of net loss	111	1	222	64
Net periodic benefit cost (benefit)	2	(35)	4	(92)
Postretirement Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	8	4	16	7
Interest cost	118	144	236	289
Amortization of prior service cost	26	25	52	50
Amortization of net loss	37	(1)	74	87
Net periodic benefit cost (benefit)	$ 189	$ 172	$ 378	$ 433