Investment Securities, Held-to-maturity Securities, Maturity (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Amortized Cost [Abstract]
Due in one year through five years	$ 72,733
Due in five years through ten years	1,446
Amortized Cost	74,179	86,215
Fair Value [Abstract]
Due in one year through five years	77,152
Due in five years through ten years	1,541
Fair Value	78,693	90,305
Mortgage-backed securities and collateralized mortgage obligations-residential [Member]
Amortized Cost [Abstract]
Amortized Cost	64,223	76,270
Fair Value [Abstract]
Fair Value	67,556	78,876
Corporate bonds [Member]
Amortized Cost [Abstract]
Amortized Cost	9,956	9,945
Fair Value [Abstract]
Fair Value	$ 11,137	$ 11,429