Securities Amortized cost and fair value of securities available for sale by contractual maturity (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014
Amortized Cost
Due in one year or less	$ 4,927
Due after one year through five years	33,682
Due after five years through ten years	43,231
Due after ten years	23,392
Total	324,040
Fair Value
Due in one year or less	5,004
Due after one year through five years	34,928
Due after five years through ten years	43,176
Due after ten years	23,073
Total	329,667
Mortgage-backed securities [Member]
Amortized Cost
Total	193,492
Fair Value
Total	197,682
Other asset backed securities [Member]
Amortized Cost
Total	25,248
Fair Value
Total	25,718
Corporate preferred stock [Member]
Amortized Cost
Total	68
Fair Value
Total	$ 86