Investments (Details 3) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012	Sep. 30, 2012
Held to Maturity, Amortized Cost
Within one year	$ 755
After one year, but within five	3,211
After five years, but within ten	10,844
After ten Years	40,398
Total	55,208
Held to Maturity, Fair Value
Within one year	769
After one year, but within five	3,311
After five years, but within ten	10,873
After ten Years	37,930
Fair Value	52,883	36,218
Available for sale, Amortized Cost
After one year, but within five	25,439
After five years, but within ten	48,330
After ten Years	37,999
Total	111,768
Available for sale, Fair Value
After one year, but within five	25,261
After five years, but within ten	47,239
After ten Years	37,329
Fair Value	109,829	79,502
Carrying value of investment securities pledged	$ 159,537		$ 84,301