Condensed Financial Statements of Parent Company, Statements of Income (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Income [Abstract]
Other income	$ 291	$ 155
Total interest and dividend income	38,257	32,934
Expenses [Abstract]
Salaries and benefits	22,580	20,863
Legal expenses	2,296	2,069
Merger expenses	655	241
Other operating expenses	2,487	2,717
Total noninterest expense	38,500	39,195
Income (loss) before income taxes	5,198	(126)
Income tax benefit	279	(97)
Net income (loss)	4,919	(29)
Parent Company [Member]
Income [Abstract]
Dividends from subsidiaries	2,500	2,050
Other income	233	200
Total interest and dividend income	2,733	2,250
Expenses [Abstract]
Salaries and benefits	453	445
Legal expenses	143	285
Service fees	166	210
Merger expenses	655	241
Other operating expenses	153	75
Total noninterest expense	1,570	1,256
Income (loss) before income taxes	1,163	994
Income tax benefit	(143)	(360)
Net income before equity in undistributed net income of subsidiaries	1,306	1,354
Equity in undistributed net income (loss) of subsidiaries	3,613	(1,383)
Net income (loss)	$ 4,919	$ (29)