Securities (Details 1) (USD $) In Thousands, unless otherwise specified	9 Months Ended	12 Months Ended
	Sep. 30, 2013	Dec. 31, 2012
Securities in an Unrealized Loss Position for Less than 12 Months
AFS Fair Value	$ 83,830	$ 26,330
AFS Unrealized Losses	3,161	330
Securities in an Unrealized Loss Position for More than 12 Months
AFS Fair Value	3,668	770
AFS Unrealized Losses	678	285
Total AFS Fair Value	87,498	27,100
Total AFS Unrealized Losses	3,839	615
US Government-sponsored enterprises securities
Securities in an Unrealized Loss Position for Less than 12 Months
AFS Fair Value	8,334
AFS Unrealized Losses	166
Securities in an Unrealized Loss Position for More than 12 Months
AFS Fair Value
AFS Unrealized Losses
Total AFS Fair Value	8,334
Total AFS Unrealized Losses	166
Mortgage-backed securities
Securities in an Unrealized Loss Position for Less than 12 Months
AFS Fair Value	74,011	26,330
AFS Unrealized Losses	2,986	330
Securities in an Unrealized Loss Position for More than 12 Months
AFS Fair Value	3,042
AFS Unrealized Losses	263
Total AFS Fair Value	77,053	26,330
Total AFS Unrealized Losses	3,249	330
Corporate bonds
Securities in an Unrealized Loss Position for Less than 12 Months
AFS Fair Value
AFS Unrealized Losses
Securities in an Unrealized Loss Position for More than 12 Months
AFS Fair Value	600	740
AFS Unrealized Losses	400	260
Total AFS Fair Value	600	740
Total AFS Unrealized Losses	400	260
Equities
Securities in an Unrealized Loss Position for Less than 12 Months
AFS Fair Value
AFS Unrealized Losses
Securities in an Unrealized Loss Position for More than 12 Months
AFS Fair Value	26	30
AFS Unrealized Losses	15	25
Total AFS Fair Value	26	30
Total AFS Unrealized Losses	15	25
States and local governments
Securities in an Unrealized Loss Position for Less than 12 Months
AFS Fair Value	1,485
AFS Unrealized Losses	9
Securities in an Unrealized Loss Position for More than 12 Months
AFS Fair Value
AFS Unrealized Losses
Total AFS Fair Value	1,485
Total AFS Unrealized Losses	$ 9