Investment Securities, Held-to-maturity Securities, Maturity (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
Amortized Cost [Abstract]
Due in one year through five years	$ 76,333
Due in five years through ten years	1,593
Amortized Cost	77,926	86,215
Fair Value [Abstract]
Due in one year through five years	81,192
Due in five years through ten years	1,703
Fair Value	82,895	90,305
Mortgage-backed securities and collateralized mortgage obligations-residential [Member]
Fair Value [Abstract]
Fair Value	71,588	78,876
Corporate bonds [Member]
Fair Value [Abstract]
Fair Value	$ 11,307	$ 11,429