Securities (Details 2) (USD $)	Mar. 31, 2014	Dec. 31, 2013
Securities available for sale, Amortized cost
Due within 1 year	$ 67,648,000
Due after 1 but within 5 years	127,055,000
Due after 5 but within 10 years	32,945,000
Due after 10 years	36,680,000
Mortgage-backed securities	175,020,000
Corporate equity securities	756,000
Total securities available for sale	440,104,000	493,066,000
Securities available for sale, Fair value
Due within 1 year	67,833,000
Due after 1 but within 5 years	128,435,000
Due after 5 but within 10 years	33,531,000
Due after 10 years	36,063,000
Mortgage-backed securities	173,280,000
Corporate equity securities	1,042,000
Total securities available for sale, fair value	440,184,000	490,031,000
Carrying value of securities pledged to secure accounts of commercial depositors	$ 201,500,000	$ 243,500,000