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DISCLOSURES ABOUT FAIR VALUE OF FINANCIAL INSTRUMENTS - Quantitative information about Level 3 fair value measurements (Details 4) (USD $)
In Thousands, unless otherwise specified
9 Months Ended 9 Months Ended 9 Months Ended
Sep. 30, 2012
Dec. 31, 2011
Sep. 30, 2012
Fair Value Measurements Using Significant Unobservable Inputs (Level 3)
Fair Value, Measurements, Recurring
Dec. 31, 2011
Fair Value Measurements Using Significant Unobservable Inputs (Level 3)
Fair Value, Measurements, Recurring
Sep. 30, 2012
Fair Value Measurements Using Significant Unobservable Inputs (Level 3)
Fair Value, Measurements, Recurring
Impaired loans
Sep. 30, 2012
Fair Value Measurements Using Significant Unobservable Inputs (Level 3)
Fair Value, Measurements, Recurring
Impaired loans
Maximum
Sep. 30, 2012
Fair Value Measurements Using Significant Unobservable Inputs (Level 3)
Fair Value, Measurements, Recurring
Impaired loans
Minimum
Sep. 30, 2012
Fair Value Measurements Using Significant Unobservable Inputs (Level 3)
Fair Value, Measurements, Recurring
Impaired loans
Valuation Techniques
Sep. 30, 2012
Fair Value Measurements Using Significant Unobservable Inputs (Level 3)
Fair Value, Measurements, Recurring
Real estate held for sale
Sep. 30, 2012
Fair Value Measurements Using Significant Unobservable Inputs (Level 3)
Fair Value, Measurements, Recurring
Real estate held for sale
Maximum
Sep. 30, 2012
Fair Value Measurements Using Significant Unobservable Inputs (Level 3)
Fair Value, Measurements, Recurring
Real estate held for sale
Minimum
Sep. 30, 2012
Fair Value Measurements Using Significant Unobservable Inputs (Level 3)
Fair Value, Measurements, Recurring
Real estate held for sale
Valuation Techniques
Sep. 30, 2012
Fair Value Measurements Using Significant Unobservable Inputs (Level 3)
Fair Value, Measurements, Recurring
Trust Preferred Securities Subject to Mandatory Redemption
Sep. 30, 2012
Fair Value Measurements Using Significant Unobservable Inputs (Level 3)
Fair Value, Measurements, Recurring
Trust Preferred Securities Subject to Mandatory Redemption
Maximum
Sep. 30, 2012
Fair Value Measurements Using Significant Unobservable Inputs (Level 3)
Fair Value, Measurements, Recurring
Trust Preferred Securities Subject to Mandatory Redemption
Minimum
Sep. 30, 2012
Fair Value Measurements Using Significant Unobservable Inputs (Level 3)
Fair Value, Measurements, Recurring
Trust Preferred Securities Subject to Mandatory Redemption
Valuation Techniques
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                                
Impaired loans         $ 4,643                      
Real estate, held for sale 1,221 2,487             936              
Available-for-sale securities                                
Investment securities available for sale $ 112,201 $ 104,689 $ 1,182 $ 1,090                 $ 1,182      
Valuation Techniques               Comparative sales based on independent appraisal       Comparative sales based on independent appraisal       Discounted cash flows
Marketability Discount           20.00% 10.00%     20.00% 10.00%          
*Default probability                           4.93% 2.81%  
*Loss, given default                               100.00%
*Asset correlation                           50.00% 30.00%  
Recovery rate                               0.00%
*Prepayment rate                               0.00%