Securities (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2017 USD ($) Security	Mar. 31, 2016 USD ($)	Dec. 31, 2016 USD ($) Security
Amortized cost and fair value of securities available-for-sale [Abstract]
Amortized Cost	$ 197,185		$ 202,000
Gross Unrealized Gains	729		532
Gross unrealized losses	(2,716)		(3,167)
Securities available-for-sale, at fair value	195,198		199,365
Available-for-sale Securities, Realized Gains (Losses) [Abstract]
Realized gains on sales of securities	0	$ 548
Realized losses on sales of securities	0	(39)
Net realized gain	0	$ 509
Securities Available-for-Sale, Gross Unrealized Losses [Abstract]
Less Than Twelve Months	2,715		3,166
More Than Twelve Months	1		1
Gross Unrealized Losses	2,716		3,167
Securities Available-for-Sale, Fair Value [Abstract]
Less than Twelve Months	139,550		129,682
More Than Twelve Months	100		100
Total	$ 139,650		$ 129,782
Available-for-sale securities with continuous unrealized loss position, number of securities [Abstract]
Cause	caused by increases in market interest rates.
Number of Securities | Security	89		98
U.S. Treasury Securities [Member]
Amortized cost and fair value of securities available-for-sale [Abstract]
Amortized Cost			$ 20,000
Gross Unrealized Gains			0
Gross unrealized losses			0
Securities available-for-sale, at fair value			20,000
Securities Available-for-Sale, Gross Unrealized Losses [Abstract]
Gross Unrealized Losses			0
Obligations of U.S. Government Agencies [Member]
Amortized cost and fair value of securities available-for-sale [Abstract]
Amortized Cost	$ 29,483		9,361
Gross Unrealized Gains	0		0
Gross unrealized losses	(117)		(166)
Securities available-for-sale, at fair value	29,366		9,195
Securities Available-for-Sale, Gross Unrealized Losses [Abstract]
Less Than Twelve Months	117		166
More Than Twelve Months	0		0
Gross Unrealized Losses	117		166
Securities Available-for-Sale, Fair Value [Abstract]
Less than Twelve Months	29,066		9,195
More Than Twelve Months	0		0
Total	$ 29,066		$ 9,195
Available-for-sale securities with continuous unrealized loss position, number of securities [Abstract]
Number of Securities | Security	9		6
Obligations of states and political subdivisions [Member]
Amortized cost and fair value of securities available-for-sale [Abstract]
Amortized Cost	$ 76,058		$ 78,645
Gross Unrealized Gains	539		358
Gross unrealized losses	(754)		(1,016)
Securities available-for-sale, at fair value	75,843		77,987
Securities Available-for-Sale, Gross Unrealized Losses [Abstract]
Less Than Twelve Months	754		1,016
More Than Twelve Months	0		0
Gross Unrealized Losses	754		1,016
Securities Available-for-Sale, Fair Value [Abstract]
Less than Twelve Months	30,520		38,020
More Than Twelve Months	0		0
Total	$ 30,520		$ 38,020
Available-for-sale securities with continuous unrealized loss position, number of securities [Abstract]
Number of Securities | Security	44		56
Mortgage-backed securities [Member]
Amortized cost and fair value of securities available-for-sale [Abstract]
Amortized Cost	$ 83,347		$ 85,649
Gross Unrealized Gains	7		18
Gross unrealized losses	(1,837)		(1,973)
Securities available-for-sale, at fair value	81,517		83,694
Securities Available-for-Sale, Gross Unrealized Losses [Abstract]
Less Than Twelve Months	1,837		1,973
More Than Twelve Months	0		0
Gross Unrealized Losses	1,837		1,973
Securities Available-for-Sale, Fair Value [Abstract]
Less than Twelve Months	78,173		80,680
More Than Twelve Months	0		0
Total	$ 78,173		$ 80,680
Available-for-sale securities with continuous unrealized loss position, number of securities [Abstract]
Number of Securities | Security	23		23
Money market investments [Member]
Amortized cost and fair value of securities available-for-sale [Abstract]
Amortized Cost	$ 699		$ 647
Gross Unrealized Gains	0		0
Gross unrealized losses	0		0
Securities available-for-sale, at fair value	699		647
Securities Available-for-Sale, Gross Unrealized Losses [Abstract]
Gross Unrealized Losses	0		0
Corporate Bond and Other Securities [Member]
Amortized cost and fair value of securities available-for-sale [Abstract]
Amortized Cost	7,498		7,598
Gross Unrealized Gains	135		92
Gross unrealized losses	(8)		(12)
Securities available-for-sale, at fair value	7,625		7,678
Securities Available-for-Sale, Gross Unrealized Losses [Abstract]
Less Than Twelve Months	7		11
More Than Twelve Months	1		1
Gross Unrealized Losses	8		12
Securities Available-for-Sale, Fair Value [Abstract]
Less than Twelve Months	1,791		1,787
More Than Twelve Months	100		100
Total	$ 1,891		$ 1,887
Available-for-sale securities with continuous unrealized loss position, number of securities [Abstract]
Number of Securities | Security	13		13
Common Stock [Member]
Amortized cost and fair value of securities available-for-sale [Abstract]
Amortized Cost	$ 100		$ 100
Gross Unrealized Gains	48		64
Gross unrealized losses	0		0
Securities available-for-sale, at fair value	148		164
Securities Available-for-Sale, Gross Unrealized Losses [Abstract]
Gross Unrealized Losses	$ 0		$ 0