Net Periodic Benefit Costs (Schedule Of Net Periodic Cost) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Defined Benefit Plan Disclosure [Line Items]
Contributions to the defined benefit pension plan			$ 165
Pension [Member]
Defined Benefit Plan Disclosure [Line Items]
Interest cost	$ 52	$ 52	103	$ 103
Expected return on plan assets	(77)	(76)	(154)	(153)
Amortization of the net loss	18	4	35	10
Net periodic cost (benefit)	(7)	(20)	(16)	(40)
Contributions to the defined benefit pension plan			165
Supplemental Executive Retirement Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	49	42	97	84
Interest cost	37	40	74	80
Amortization of prior service cost	9	7	16	15
Amortization of the net loss	34	21	65	42
Net periodic cost (benefit)	$ 129	$ 110	$ 252	$ 221