Net Periodic Benefit Costs (Schedule Of Net Periodic Cost) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Defined Benefit Plan Disclosure [Line Items]
Contributions to the defined benefit pension plan			$ 165	$ 110
Pension [Member]
Defined Benefit Plan Disclosure [Line Items]
Interest cost	$ 51	$ 52	153	155
Expected return on plan assets	(77)	(76)	(231)	(229)
Amortization of the net loss	18	5	54	15
Net periodic cost (benefit)	(8)	(19)	(24)	(59)
Contributions to the defined benefit pension plan			165
Supplemental Executive Retirement Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	49	40	147	124
Interest cost	37	37	111	117
Amortization of prior service cost	8	7	24	22
Amortization of the net loss	33	20	97	62
Net periodic cost (benefit)	$ 127	$ 104	$ 379	$ 325