CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Statement of Comprehensive Income [Abstract]
Net income	$ 18,912	$ 14,845	$ 12,972
Other comprehensive income (loss):
Net unrealized gain (loss) on available-for-sale securities (net of taxes of $1,450, $(516), and $285 for 2019, 2018, and 2017, respectively)	5,456	(1,939)	585
Reclassification adjustment for net realized gain on sale of available-for-sale securities included in net income (net of taxes of $(9), $(2), and $81 for 2019, 2018 and 2017, respectively)	32	6	(152)
Change in nonqualified pension plan unrecognized net gain (loss) and unrecognized prior service cost (net of taxes of $(26), $21, and $(53) for 2019, 2018, and 2017, respectively)	(96)	81	(158)
Other comprehensive income (loss)	5,392	(1,852)	275
TOTAL COMPREHENSIVE INCOME	24,304	12,993	13,247
COMPONENTS OF ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS), NET OF TAX, AS OF YEAR-END:
Net unrealized gain (loss) on securities available-for-sale	857	(4,631)	(2,200)
Net unfunded liability for nonqualified pension plan	(184)	(88)	(142)
Balance at year-end	$ 673	$ (4,719)	$ (2,342)