Segment Information (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 2016
Segment Reporting Information [Line Items]
Net interest income from external sources	$ 6,895	$ 5,817	$ 13,644	$ 11,463
Other income from external sources	1,818	1,826	4,295	4,350
Depreciation and amortization	265	288	538	546
Income before income taxes	1,807	1,660	4,649	4,009
Income tax expense	603	551	1,434	1,326
Total assets	928,827	789,812	928,827	789,812	$ 848,728
Banking And Financial Services [Member]
Segment Reporting Information [Line Items]
Net interest income from external sources	6,895	5,817	13,644	11,463
Other income from external sources	675	781	1,405	1,567
Depreciation and amortization	258	281	525	533
Income before income taxes	1,627	1,556	3,649	3,070
Income tax expense	531	509	1,034	950
Total assets	922,510	783,239	922,510	783,239
Insurance Services [Member]
Segment Reporting Information [Line Items]
Other income from external sources	1,143	1,045	2,890	2,783
Depreciation and amortization	7	7	13	13
Income before income taxes	180	104	1,000	939
Income tax expense	72	42	400	376
Total assets	$ 6,317	$ 6,573	$ 6,317	$ 6,573
Statutory tax rate	40.00%	40.00%	40.00%	40.00%