Quarterly report pursuant to Section 13 or 15(d)

LOANS AND ALLOWANCE FOR LOAN LOSSES (Narrative) (Details)

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LOANS AND ALLOWANCE FOR LOAN LOSSES (Narrative) (Details) (USD $)
9 Months Ended 12 Months Ended
Sep. 30, 2013
loan
Sep. 30, 2012
loan
Dec. 31, 2012
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Loans $ 3,002,246,000 $ 2,908,510,000 $ 2,966,847,000
Loans and interest accrued 90 days past due 7,326,000 9,100,000 8,843,000
Individually evaluated for impairment 3,317,000   6,570,000
Restructured loans that defaulted in the current period 43,000 1,400,000  
Period for restructured loan to be considered default 90 days    
Recorded Investment 119,247,000   155,375,000
Loans considered to be trouble debt restructurings 47,900,000   63,459,000
Number of restructured loans that defaulted in current period 1 3  
Nonaccrual loans excluded from impaired loan 0 0  
Nonaccrual Loans [Member]
     
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Loans $ 19,900,000 $ 32,200,000 $ 26,200,000