Securities (Details 1) (USD $) In Thousands, unless otherwise specified	6 Months Ended	12 Months Ended
	Jun. 30, 2013	Dec. 31, 2012
Securities in an Unrealized Loss Position for Less than 12 Months
AFS Fair Value	$ 70,045	$ 26,330
AFS Unrealized Losses	1,346	330
Securities in an Unrealized Loss Position for More than 12 Months
AFS Fair Value	631	770
AFS Unrealized Losses	418	285
Total AFS Fair Value	70,676	27,100
Total AFS Unrealized Losses	1,764	615
US Government-sponsored enterprises securities
Securities in an Unrealized Loss Position for Less than 12 Months
AFS Fair Value	5,419	0
AFS Unrealized Losses	81
Securities in an Unrealized Loss Position for More than 12 Months
AFS Fair Value
AFS Unrealized Losses
Total AFS Fair Value	5,419
Total AFS Unrealized Losses	81
Mortgage-backed securities
Securities in an Unrealized Loss Position for Less than 12 Months
AFS Fair Value	64,626	26,330
AFS Unrealized Losses	1,265	330
Securities in an Unrealized Loss Position for More than 12 Months
AFS Fair Value
AFS Unrealized Losses
Total AFS Fair Value	64,626	26,330
Total AFS Unrealized Losses	1,265	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	31	30
AFS Unrealized Losses	18	25
Total AFS Fair Value	31	30
Total AFS Unrealized Losses	18	25
States and local governments
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
AFS Unrealized Losses
Total AFS Fair Value
Total AFS Unrealized Losses