STATEMENTS OF COMPREHENSIVE INCOME (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
STATEMENTS OF COMPREHENSIVE INCOME [Abstract]
Net income	$ 1,862	$ 1,741	$ 5,809	$ 5,773
Designated interest rate swaps:
Changes in fair value	(99)	0	(39)	0
Income tax benefit	40	0	16	0
Unrealized holding loss on designated interest rate swaps	(59)	0	(23)	0
Amounts Included In Net Periodic Benefit Cost
Amortization of net actuarial loss	119	203	359	473
Amortization of prior service credit	(236)	(19)	(708)	(57)
Amortization of transition obligation	0	15	0	45
Adjustment to post-retirement benefit plan	0	0	0	(1,034)
Income tax benefit (expense)	47	(80)	139	228
Change in post-retirement benefit plan	(70)	119	(210)	(345)
Other comprehensive (loss) income	(129)	119	(233)	(345)
Comprehensive income	$ 1,733	$ 1,860	$ 5,576	$ 5,428