Annual report pursuant to Section 13 and 15(d)

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

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LOANS AND ALLOWANCE FOR LOAN LOSSES (Narrative) (Details) (USD $)
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Loans $ 3,039,368,000 $ 2,966,847,000 $ 2,818,583,000
Net interest income 151,626,000 154,355,000 156,360,000
Loans and interest accrued 90 days past due 6,746,000 8,843,000  
Average investment in impaired loans 128,479,000 166,817,000 264,500,000
Interest income recorded on impaired loans 4,321,000 6,570,000 10,600,000
Period for restructured loan to be considered default 90 days    
Recorded Investment 112,621,000 155,375,000  
Loans considered to be trouble debt restructurings 41,824,000 63,459,000  
Nonaccrual loans excluded from impaired loan 0 0  
Nonaccrual Loans [Member]
     
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Loans 15,000,000 26,200,000 44,800,000
Net interest income $ 778,000 $ 1,300,000 $ 1,300,000