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Line of Business Results (Details Textual)
6 Months Ended
Jun. 30, 2012
Branch
Line of Business Results (Textual) [Abstract]  
Number of state branch network 14
Number of business units 2
Federal income tax rate 35.00%
State income tax rate 2.20%
Percentage of debt service provided by rental income from nonaffiliated third parties 50.00%