Quarterly report pursuant to Section 13 or 15(d)

Commitments and Contingencies (Details Textual)

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Commitments and Contingencies (Details Textual) (USD $)
In Millions, unless otherwise specified
3 Months Ended 12 Months Ended
Mar. 31, 2013
Dec. 31, 2012
Commitments and Contingencies (Textual) [Abstract]    
Daily average required reserves $ 15.2 $ 14.2
Deposits with other financial institutions 7.5  
Deposits with other financial institutions serves as collateral 4.2  
Uninsured deposits with other financial institutions $ 2.5