Investment Securities (Details 4) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Fair Value
Fair Value, Less than 12 Months	$ 118,948	$ 135,804
Fair Value, 12 Months or More	9,062	2,869
Fair Value, Total	128,010	138,673
Unrealized Losses
Unrealized Losses, Less than 12 Months	3,878	4,170
Unrealized Losses, 12 Months or More	1,039	854
Unrealized Losses, Total	4,917	5,024
U.S. Government agencies and corporations
Fair Value
Fair Value, Less than 12 Months	4,818	7,643
Fair Value, Total	4,818	7,643
Unrealized Losses
Unrealized Losses, Less than 12 Months	182	180
Unrealized Losses, Total	182	180
Obligations of states and political subdivisions
Fair Value
Fair Value, Less than 12 Months	40,122	41,668
Fair Value, 12 Months or More	449
Fair Value, Total	40,571	41,668
Unrealized Losses
Unrealized Losses, Less than 12 Months	1,901	2,031
Unrealized Losses, 12 Months or More	8
Unrealized Losses, Total	1,909	2,031
U.S. Government-sponsored mortgage-backed securities
Fair Value
Fair Value, Less than 12 Months	55,549	68,386
Fair Value, 12 Months or More	7,786	2,044
Fair Value, Total	63,335	70,430
Unrealized Losses
Unrealized Losses, Less than 12 Months	1,277	1,487
Unrealized Losses, 12 Months or More	239	59
Unrealized Losses, Total	1,516	1,546
U.S. Government-sponsored collateralized mortgage obligations
Fair Value
Fair Value, Less than 12 Months	7,299	9,350
Fair Value, Total	7,299	9,350
Unrealized Losses
Unrealized Losses, Less than 12 Months	126	155
Unrealized Losses, Total	126	155
U.S. Government-guaranteed small business administration pools
Fair Value
Fair Value, Less than 12 Months	11,160	8,757
Fair Value, Total	11,160	8,757
Unrealized Losses
Unrealized Losses, Less than 12 Months	392	317
Unrealized Losses, Total	392	317
Trust preferred securities
Fair Value
Fair Value, 12 Months or More	827	825
Fair Value, Total	827	825
Unrealized Losses
Unrealized Losses, 12 Months or More	792	795
Unrealized Losses, Total	$ 792	$ 795