Parent-only Financial Statements, Condensed Balance Sheets (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Assets [Abstract]
Cash and due from banks	$ 128,090	$ 100,054
Total assets	770,511	703,594
Liabilities and Shareholders' Equity [Abstract]
Borrowings	0	5,600
Total liabilities	682,045	634,418
Total shareholders' equity	88,466	69,176	$ 55,136	$ 45,314
Total liabilities and shareholders' equity	770,511	703,594
Parent Company [Member]
Assets [Abstract]
Cash and due from banks	295	64
Investment in bank subsidiary	87,377	73,718
Goodwill	1,011	1,011
Other assets	39	0
Total assets	88,722	74,793
Liabilities and Shareholders' Equity [Abstract]
Borrowings	0	5,600
Other liabilities	256	17
Total liabilities	256	5,617
Total shareholders' equity	88,466	69,176
Total liabilities and shareholders' equity	$ 88,722	$ 74,793