CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Statement of Comprehensive Income [Abstract]
Net income	$ 12,482	$ 11,474	$ 9,869
Other comprehensive income (loss):
Net unrealized gain (loss) on available-for-sale securities (net of tax expense (benefit) of $(1,242), $(169), and $1,476 for 2016, 2015, and 2014, respectively)	(2,390)	(329)	2,865
Reclassification adjustment for net realized gain on sale of available-for-sale securities included in net income (net of taxes of $370, $168, and $51 for 2016, 2015 and 2014, respectively)	(712)	(327)	(98)
Change in nonqualified pension plan unrecognized net gain (loss) and unrecognized prior service cost (net of tax expense (benefit) of $128, $55, and $(133) for 2016, 2015, and 2014, respectively)	249	107	(260)
Other comprehensive income (loss)	(2,853)	(549)	2,507
TOTAL COMPREHENSIVE INCOME	9,629	10,925	12,376
COMPONENTS OF ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS), NET OF TAX, AS OF YEAR-END:
Net unrealized gain (loss) on securities available-for-sale	(2,633)	469	1,125
Net unfunded liability for nonqualified pension plan	16	(233)	(340)
Balance at year-end	$ (2,617)	$ 236	$ 785