Securities (Details 1) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Securities in an Unrealized Loss Position for Less than 12 Months
AFS Fair Value	$ 35,219	$ 26,330
AFS Unrealized Losses	553	330
Securities in an Unrealized Loss Position for More than 12 Months
AFS Fair Value	824	770
AFS Unrealized Losses	220	285
Total AFS Fair Value	36,043	27,100
Total AFS Unrealized Losses	773	615
US Government-sponsored enterprises securities
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
Mortgage-backed securities
Securities in an Unrealized Loss Position for Less than 12 Months
AFS Fair Value	35,219	26,330
AFS Unrealized Losses	553	330
Securities in an Unrealized Loss Position for More than 12 Months
AFS Fair Value
AFS Unrealized Losses
Total AFS Fair Value	35,219	26,330
Total AFS Unrealized Losses	553	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	800	740
AFS Unrealized Losses	200	260
Total AFS Fair Value	800	740
Total AFS Unrealized Losses	200	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	24	30
AFS Unrealized Losses	20	25
Total AFS Fair Value	24	30
Total AFS Unrealized Losses	20	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