Securities (Details 3) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2011
Fair Value
Less than Twelve Months, Fair Value	$ 2,882
Twelve Months or More than Twelve Months, Fair Value	0
Total, Fair Value	2,882
Unrealized Loss
Less than Twelve Months, Unrealized Loss	16
Twelve Months or Less than Twelve Months, Unrealized Loss	0
Total, Unrealized Loss	16
Collateralized mortgage obligations [Member]
Fair Value
Less than Twelve Months, Fair Value	2,882
Twelve Months or More than Twelve Months, Fair Value	0
Total, Fair Value	2,882
Unrealized Loss
Less than Twelve Months, Unrealized Loss	16
Twelve Months or Less than Twelve Months, Unrealized Loss	0
Total, Unrealized Loss	$ 16