Condensed Financial Information Parent Company (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
ASSETS
Cash	$ 19,125	$ 15,351	$ 18,496	$ 10,569
Other assets	17,174	14,652
Total assets	711,101	655,184
LIABILITIES
Other liabilities	9,787	9,307
Subordinated debt (Note 7)	5,155	5,155
Total liabilities	649,471	597,514
SHAREHOLDERS’ EQUITY
Common stock	23,641	23,641
Additional paid-in capital	20,928	20,878
Retained earnings	24,403	21,485
Accumulated other comprehensive loss	(1,825)	(2,961)
Treasury stock	(5,517)	(5,373)
Total shareholders’ equity	61,630	57,670	56,684	55,852
Total liabilities and shareholders’ equity	711,101	655,184
Parent Company
ASSETS
Cash	261	320	$ 122	$ 96
Investment in bank subsidiary	58,028	53,759
Subordinated note from subsidiary bank	6,000	6,000
Other assets	3,489	3,700
Total assets	67,778	63,779
LIABILITIES
Other liabilities	993	954
Subordinated debt (Note 7)	5,155	5,155
Total liabilities	6,148	6,109
SHAREHOLDERS’ EQUITY
Common stock	23,641	23,641
Additional paid-in capital	20,928	20,878
Retained earnings	24,403	21,485
Accumulated other comprehensive loss	(1,825)	(2,961)
Treasury stock	(5,517)	(5,373)
Total shareholders’ equity	61,630	57,670
Total liabilities and shareholders’ equity	$ 67,778	$ 63,779