CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Statement of Comprehensive Income [Abstract]
Net income	$ 1,956	$ 6,930	$ 11,405	$ 13,896
Other comprehensive income (loss):
Unrealized holding gains (losses) on securities available for sale	3,573	(1,583)	10,885	(6,422)
Reclassification adjustment for gains realized in net income	0	0	(19)	0
Net unrealized gains (losses)	3,573	(1,583)	10,866	(6,422)
Tax effect	911	(404)	2,771	(1,637)
Net of tax amount	2,662	(1,179)	8,095	(4,785)
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	72	218	218
Total before tax effect	17	17	53	53
Tax effect	4	4	13	13
Net of tax amount	13	13	40	40
Total other comprehensive income (loss)	2,675	(1,166)	8,135	(4,745)
Comprehensive income	$ 4,631	$ 5,764	$ 19,540	$ 9,151