CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Statement of Comprehensive Income [Abstract]
Net income	$ 6,930	$ 3,654	$ 13,896	$ 9,589
Other comprehensive income (loss):
Unrealized holding gains (losses) on securities available for sale	(1,583)	(522)	(6,422)	5,498
Reclassification adjustment for gains realized in net income	0	0	0	(12)
Net unrealized gains (losses)	(1,583)	(522)	(6,422)	5,486
Tax effect	(404)	(198)	(1,637)	2,069
Net of tax amount	(1,179)	(324)	(4,785)	3,417
Change in funded status of defined benefit pension plan and other benefit plans:
Reclassification adjustment for amortization of prior service costs	(55)	(55)	(165)	(165)
Reclassification adjustment for amortization of net actuarial loss	72	88	218	264
Total before tax effect	17	33	53	99
Tax effect	4	12	13	37
Net of tax amount	13	21	40	62
Total other comprehensive income (loss)	(1,166)	(303)	(4,745)	3,479
Comprehensive income	$ 5,764	$ 3,351	$ 9,151	$ 13,068