Federal Home Loan Bank Borrowings (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Aggregate Annual Maturities and Weighted-Average Interest Rates of Federal Home Loan Bank
Scheduled maturity, 2012	$ 50,726
Scheduled maturity, 2013	50,206
Scheduled maturity, 2014	16,144
Scheduled maturity, 2015	916
Scheduled maturity, 2016	121
Scheduled maturity, 2017 and thereafter	23,764
Scheduled maturity, Total	$ 141,877	$ 168,200
Weighted average rate, 2012	4.48%
Weighted average rate, 2013	3.27%
Weighted average rate, 2014	3.40%
Weighted average rate, 2015	4.69%
Weighted average rate, 2016	4.35%
Weighted average rate, 2017 and thereafter	4.09%
Weighted average interest rate	3.87%	3.58%

The calculated weighted average interest rate for Federal Home Loan Bank advances outstanding as of the Balance Sheet date.

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Amount of federal home loan bank advances. Advances are loans from the federal home loan bank system to a member (shareholder).

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The weighted average interest rate applicable to the Federal Home Loan Bank advances which are due after five years of the Balance Sheet date.

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The weighted average interest rate applicable to the Federal Home Loan Bank advances which are due from four to five years of the Balance Sheet date.

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The weighted average interest rate applicable to the Federal Home Loan Bank advances which are due within one year of the Balance Sheet date.

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The weighted average interest rate applicable to the Federal Home Loan Bank advances which are due from one to two years of the Balance Sheet date.

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The weighted average interest rate applicable to the Federal Home Loan Bank advances which are due from three to four years of the Balance Sheet date.

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Amount of federal home loan bank advances maturing after the fifth fiscal year following the latest fiscal year.

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Amount of federal home loan bank advances maturing in the second fiscal year following the latest fiscal year.

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