CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Statement of Comprehensive Income [Abstract]
Net income	$ 4,468	$ 4,439
Other comprehensive income (loss):
Unrealized holding gains (losses) on securities available for sale	3,430	(4,439)
Tax effect	874	(1,132)
Net of tax amount	2,556	(3,307)
Change in funded status of defined benefit pension plan and other benefit plans:
Reclassification adjustment for amortization of prior service costs	(55)	(55)
Reclassification adjustment for amortization of net actuarial loss	73	73
Total before tax effect	18	18
Tax effect	5	5
Net of tax amount	13	13
Total other comprehensive income (loss)	2,569	(3,294)
Comprehensive income	$ 7,037	$ 1,145