Investment Securities Contractual maturity (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Amortized Cost
One Year or Less	$ 1,067
More than One Year to Five Years	26,998
More than Five Years to Ten Years	71,630
More than Ten Years	180,016
Amortized Cost	279,711	$ 200,758
Fair Value
One Year or Less	1,068
More than One Year to Five Years	27,134
More than Five Years to Ten Years	72,307
More than Ten Years	179,764
Total	280,273	201,638
Amortized Cost
One Year or Less	0
More than One Year to Five Years	0
More than Five Years to Ten Years	0
More than Ten Years	9,642
Amortized Cost	9,642	0
Fair Value
One Year or Less	0
More than One Year to Five Years	0
More than Five Years to Ten Years	0
More than Ten Years	9,572
Total	9,572
Amortized Cost
One Year or Less	1,067
More than One Year to Five Years	26,998
More than Five Years to Ten Years	71,630
More than Ten Years	189,658
Total	289,353
Fair Value
One Year or Less	1,068
More than One Year to Five Years	27,134
More than Five Years to Ten Years	72,307
More than Ten Years	189,336
Total	289,845
Accumulated other comprehensive income (loss)	(562)	880
Accumulated other comprehensive income (loss), net of tax	332	518
Municipal bonds
Amortized Cost
One Year or Less	1,067
More than One Year to Five Years	26,998
More than Five Years to Ten Years	43,968
More than Ten Years	56,513
Amortized Cost	128,546	88,599
Fair Value
One Year or Less	1,068
More than One Year to Five Years	27,134
More than Five Years to Ten Years	44,695
More than Ten Years	57,348
Total	130,245	89,661
Collateralized mortgage obligation
Amortized Cost
One Year or Less	0
More than One Year to Five Years	0
More than Five Years to Ten Years	0
More than Ten Years	24,722
Amortized Cost	24,722	6,831
Fair Value
One Year or Less	0
More than One Year to Five Years	0
More than Five Years to Ten Years	0
More than Ten Years	24,543
Total	24,543	6,862
Other
Amortized Cost
One Year or Less	0
More than One Year to Five Years	0
More than Five Years to Ten Years	0
More than Ten Years	1,242
Amortized Cost	1,242
Fair Value
One Year or Less	0
More than One Year to Five Years	0
More than Five Years to Ten Years	0
More than Ten Years	1,242
Total	1,242
Mortgage-backed securities
Amortized Cost
One Year or Less	0
More than One Year to Five Years	0
More than Five Years to Ten Years	27,662
More than Ten Years	98,781
Amortized Cost	126,443	105,328
Fair Value
One Year or Less	0
More than One Year to Five Years	0
More than Five Years to Ten Years	27,612
More than Ten Years	97,873
Total	125,485	$ 105,115
Amortized Cost
One Year or Less	0
More than One Year to Five Years	0
More than Five Years to Ten Years	0
More than Ten Years	8,400
Amortized Cost	8,400
Fair Value
One Year or Less	0
More than One Year to Five Years	0
More than Five Years to Ten Years	0
More than Ten Years	8,330
Total	$ 8,330