Securities (Details 1) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Amortized Cost
Due in one year or less	$ 4,157
Due after one but within five years	38,385
Due after five but within ten years	89,483
Due after ten years	79,020
Total of securities having specified maturity period	211,045
Mortgage-backed securities and equities	671,418
TOTAL	882,463	880,946
Fair Value
Due in one year or less	4,214
Due after one but within five years	39,879
Due after five but within ten years	94,057
Due after ten years	87,829
Total of securities having specified maturities period	225,979
Mortgage-backed securities and equities	680,362
Fair Value	$ 906,341	$ 897,053