CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Statement of Comprehensive Income [Abstract]
Net income	$ 9,869	$ 8,780	$ 8,270
Other comprehensive income (loss):
Net unrealized gain (loss) on available-for-sale securities (net of taxes of $1,476, $2,940, and $473 for 2014, 2013, and 2012, respectively)	2,865	(5,706)	918
Change in nonqualified pension plan unrecognized net gain (loss) and unrecognized prior service cost (net of taxes of $133, $38, and $1 for 2014, 2013, and 2012, respectively)	(260)	73	(2)
Reclassification adjustment for:
Net realized gain on sale of available-for-sale securities included in net income (net of taxes of $51, $418, and $630 for 2014, 2013 and 2012, respectively)	(98)	(810)	(1,223)
Other comprehensive income (loss)	2,507	(6,443)	(307)
TOTAL COMPREHENSIVE INCOME	12,376	2,337	7,963
COMPONENTS OF ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS), NET OF TAX, AS OF YEAR-END:
Net unrealized gain (loss) on securities available-for-sale	1,125	(1,642)	4,875
Net unfunded liability for nonqualified pension plan	(340)	(80)	(154)
Balance at year-end	$ 785	$ (1,722)	$ 4,721