Securities (Details 3) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015 item	Dec. 31, 2014 item
Fair value
Less than 12 months	$ 32,169	$ 53,672
12 months or more	46,873	82,470
Total	79,042	136,142
Unrealized losses
Less than 12 months	129	174
12 months or more	926	1,875
Total	1,055	2,049
Number of securities	49	80
Government sponsored enterprise obligations
Fair value
Less than 12 months	10,698	36,979
12 months or more	9,141	26,848
Total	19,839	63,827
Unrealized losses
Less than 12 months	11	30
12 months or more	240	532
Total	251	562
Mortgage-backed securities - government agencies
Fair value
Less than 12 months	13,832	4,038
12 months or more	35,065	49,325
Total	48,897	53,363
Unrealized losses
Less than 12 months	82	77
12 months or more	663	1,268
Total	745	1,345
Obligations of states and political subdivisions
Fair value
Less than 12 months	7,639	12,655
12 months or more	2,667	6,297
Total	10,306	18,952
Unrealized losses
Less than 12 months	36	67
12 months or more	23	75
Total	$ 59	$ 142