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Commitments and Contingencies (Details) (USD $) |  |  |  |  |  |  | 6 Months Ended
--- | --- | --- | --- | --- | --- | --- | ---
Jun. 30, 2013 | Jun. 30, 2013 Commitments to extend credit | Dec. 31, 2012 Commitments to extend credit | Jun. 30, 2013 Commitments to originate residential first and second mortgage loans | Dec. 31, 2012 Commitments to originate residential first and second mortgage loans | Jun. 30, 2013 Standby letters of credit | Dec. 31, 2012 Standby letters of credit | Jun. 30, 2013 Standby letters of credit Minimum | Jun. 30, 2013 Standby letters of credit Maximum
Contractual amount of off-balance-sheet financial instruments |  |  |  |  |  |  |  |  |
Amounts accrued for estimated losses for the financial instruments | $ 0 |  |  |  |  |  |  |  |
Total contractual amount of off-balance-sheet financial instruments |  | $ 132,996,000 | $ 118,412,000 | $ 4,299,000 | $ 5,171,000 | $ 2,512,000 | $ 2,995,000 |  |
Remaining term of standby letters of credit |  |  |  |  |  |  |  | 1 month | 5 years

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