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Securities (Details Textual) (USD $) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2013 Contract | Dec. 31, 2012 Contract
Securities (Textual) [Abstract] |  |
Number of U.S. agency and mortgage-backed securities | 16 | 12
Number of obligations of state and political subdivisions in an unrealized loss position | 12 | 9
Percentage of investment portfolio | 100.00% | 100.00%
Weighted-average period of re-pricing of portfolio | 4 years 3 months 18 days | 3 years 7 months 6 days
Impairment recognized | $ 0 |

X
- Definition Impairment losses related to federal home loan stock. + References No definition available. + Details
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- Definition Number obligation of state and political subdivisions in unrealized loss position. + References No definition available. + Details
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- Definition Number of securities in unrealized loss position. + References No definition available. + Details
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- Details
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- Definition Weighted average period of pricing of portfolio. + References No definition available. + Details
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