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Federal Home Loan Bank Borrowings (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Federal Home Loan Bank (FHLB) borrowings and advances
Open Repo Plus, Maturing Overnight, Amount		$ 15,660
Advances, Maturing 2015, Amount	4,000	4,000
Advances, Maturing 2016, Amount	6,000	5,000
Advances, Maturing 2017, Amount	5,000	4,000
Advances, Maturing 2018, Amount	1,000
Advances from Federal Home Loan Bank	16,000	13,000
Total FHLB borrowings, Amount	$ 16,000	$ 28,660
Open Repo Plus Maturity Overnight, Weighted Average Rate	0.00%	0.25%
Advances Maturing 2015, Weighted Average Rate	0.52%	0.52%
Advances Maturing 2016, Weighted Average Rate	0.71%	0.74%
Advances Maturing 2017, Weighted Average Rate	0.91%	0.92%
Advances Maturing 2018, Weighted Average Rate	1.13%
Total advances, Weighted Average Rate	0.75%	0.73%
Aggregate FHLB borrowings, Weighted Average Rate	0.75%	0.47%

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Describes the weighted average interest rate applicable to the specific advances from the Federal Home Loan Bank, by branch, as of the Balance Sheet date.

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Including both current and noncurrent portions, Federal Home Loan Bank borrowings initially due beyond one year or beyond the normal operating cycle if longer.

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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 from three to four years of the Balance Sheet date.

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