Federal Home Loan Bank Advances (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Summary of FHLB advances
2012, Amount		$ 51,269
2013, Amount		21,443
2014, Amount		104
2015, Amount		5,084
2016, Amount		67
2017, Amount	50,000	50,052
Thereafter, Amount		136
Total Federal Home Loan Bank advances, Amount	$ 50,000	$ 128,155
2012, Weighted average rate		0.26%
2013, Weighted average rate		2.39%
2014, Weighted average rate		3.70%
2015, Weighted average rate		2.62%
2016, Weighted average rate		3.70%
2017, Weighted average rate	4.20%	4.20%
Thereafter, Weighted average rate		3.70%
Total Federal Home Loan Bank advances, Weighted average rate	4.20%	2.26%