COMPREHENSIVE INCOME - Components of comprehensive income (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Net income	$ 4,083	$ 4,077	$ 4,112
Statements of Comprehensive Income
Net income	4,083	4,077	4,112
Other comprehensive income
Net unrealized gains on securities available-for-sale	(3,743)	2,632	5,973
Reclassification of net realized gains in net income		(11)	(279)
Unrealized gains on securities available-for-sale	(3,743)	2,353	5,962
Income tax expense	1,273	(800)	(2,027)
Unrealized gains on securities available-for-sale, net of tax	(2,470)	1,553	3,935
Pension plan income (loss)	1,635	2,407	(1,319)
Income tax (expense) benefit	(556)	(818)	448
Pension plan income (loss), net of tax	1,079	1,589	(871)
Other comprehensive income, net of tax	(1,391)	3,142	3,064
Comprehensive income	$ 2,692	$ 7,219	$ 7,176