Statements Of Consolidated Comprehensive Income - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Statements Of Consolidated Comprehensive Income [Abstract]
NET INCOME		$ 8,272	$ 7,843	$ 8,187
OTHER COMPREHENSIVE INCOME (LOSS), NET OF TAX:
Unrealized gain (loss) on available-for-sale securities		(840)	(436)	720
Defined benefit pension plans:
Amortization of prior service cost	[1]	19	19	19
Amortization of actuarial loss	[1]	139	125	64
Actuarial gains (losses)		68	(10)	(1,048)
Net change, Net-of-Tax Amount		226	134	(965)
OTHER COMPREHENSIVE LOSS, NET OF TAX		(614)	(302)	(245)
COMPREHENSIVE INCOME		$ 7,658	$ 7,541	$ 7,942

[1] Included in net periodic pension cost as described in Note 11 - "Employee Benefits and Deferred Compensation Plans"