Annual report pursuant to Section 13 and 15(d)

LOANS (Loans By Performance Status) (Detail)

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LOANS (Loans By Performance Status) (Detail) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2013
Dec. 31, 2012
Financing Receivable Recorded Investment [Line Items]    
Loans $ 2,858,868 $ 2,363,182
Commercial Financial and Agricultural Financing Receivable [Member]
   
Financing Receivable Recorded Investment [Line Items]    
Loans 1,278,649 1,030,990
Commercial Real Estate Construction Financing Receivable [Member]
   
Financing Receivable Recorded Investment [Line Items]    
Loans 151,868 158,361
Commercial Mortgage Loans Owner Occupied [Member]
   
Financing Receivable Recorded Investment [Line Items]    
Loans 710,372 568,041
One To Four Family Mortgage Loans [Member]
   
Financing Receivable Recorded Investment [Line Items]    
Loans 278,621 235,909
Other Real Estate Mortgage Loans [Member]
   
Financing Receivable Recorded Investment [Line Items]    
Loans 391,396 323,599
Residential Real Estate Mortgage Loans [Member]
   
Financing Receivable Recorded Investment [Line Items]    
Loans 1,380,389 1,127,549
Consumer Portfolio Segment [Member]
   
Financing Receivable Recorded Investment [Line Items]    
Loans 47,962 46,282
Performing Financing Receivable [Member]
   
Financing Receivable Recorded Investment [Line Items]    
Loans 2,849,132 2,352,824
Performing Financing Receivable [Member] | Commercial Financial and Agricultural Financing Receivable [Member]
   
Financing Receivable Recorded Investment [Line Items]    
Loans 1,276,935 1,030,714
Performing Financing Receivable [Member] | Commercial Real Estate Construction Financing Receivable [Member]
   
Financing Receivable Recorded Investment [Line Items]    
Loans 148,118 151,901
Performing Financing Receivable [Member] | Commercial Mortgage Loans Owner Occupied [Member]
   
Financing Receivable Recorded Investment [Line Items]    
Loans 708,937 565,255
Performing Financing Receivable [Member] | One To Four Family Mortgage Loans [Member]
   
Financing Receivable Recorded Investment [Line Items]    
Loans 276,725 235,456
Performing Financing Receivable [Member] | Other Real Estate Mortgage Loans [Member]
   
Financing Receivable Recorded Investment [Line Items]    
Loans 391,153 323,359
Performing Financing Receivable [Member] | Residential Real Estate Mortgage Loans [Member]
   
Financing Receivable Recorded Investment [Line Items]    
Loans 1,376,815 1,124,070
Performing Financing Receivable [Member] | Consumer Portfolio Segment [Member]
   
Financing Receivable Recorded Investment [Line Items]    
Loans 47,264 46,139
Nonperforming Financing Receivable [Member]
   
Financing Receivable Recorded Investment [Line Items]    
Loans 9,736 10,358
Nonperforming Financing Receivable [Member] | Commercial Financial and Agricultural Financing Receivable [Member]
   
Financing Receivable Recorded Investment [Line Items]    
Loans 1,714 276
Nonperforming Financing Receivable [Member] | Commercial Real Estate Construction Financing Receivable [Member]
   
Financing Receivable Recorded Investment [Line Items]    
Loans 3,750 6,460
Nonperforming Financing Receivable [Member] | Commercial Mortgage Loans Owner Occupied [Member]
   
Financing Receivable Recorded Investment [Line Items]    
Loans 1,435 2,786
Nonperforming Financing Receivable [Member] | One To Four Family Mortgage Loans [Member]
   
Financing Receivable Recorded Investment [Line Items]    
Loans 1,896 453
Nonperforming Financing Receivable [Member] | Other Real Estate Mortgage Loans [Member]
   
Financing Receivable Recorded Investment [Line Items]    
Loans 243 240
Nonperforming Financing Receivable [Member] | Residential Real Estate Mortgage Loans [Member]
   
Financing Receivable Recorded Investment [Line Items]    
Loans 3,574 3,479
Nonperforming Financing Receivable [Member] | Consumer Portfolio Segment [Member]
   
Financing Receivable Recorded Investment [Line Items]    
Loans $ 698 $ 143