Quarterly report pursuant to Section 13 or 15(d)

LOANS (Loans By Credit Quality Indicator) (Detail)

v2.4.0.8
LOANS (Loans By Credit Quality Indicator) (Detail) (USD $)
In Thousands, unless otherwise specified
Sep. 30, 2013
Dec. 31, 2012
Financing Receivable Recorded Investment [Line Items]    
Loans $ 2,731,973 $ 2,363,182
Commercial, financial and agricultural Financing Receivable [Member]
   
Financing Receivable Recorded Investment [Line Items]    
Loans 1,222,953 1,030,990
Commercial Real Estate Construction Financing Receivable [Member]
   
Financing Receivable Recorded Investment [Line Items]    
Loans 156,595 158,361
Commercial Mortgage Loans Owner Occupied [Member]
   
Financing Receivable Recorded Investment [Line Items]    
Loans 667,401 568,041
One To Four Family Mortgage Loans [Member]
   
Financing Receivable Recorded Investment [Line Items]    
Loans 262,144 235,909
Other Real Estate Mortgage Loans [Member]
   
Financing Receivable Recorded Investment [Line Items]    
Loans 379,490 323,599
Residential Real Estate Mortgage Loans [Member]
   
Financing Receivable Recorded Investment [Line Items]    
Loans 1,309,035 1,127,549
Consumer Portfolio Segment [Member]
   
Financing Receivable Recorded Investment [Line Items]    
Loans 43,390 46,282
Pass [Member]
   
Financing Receivable Recorded Investment [Line Items]    
Loans 2,636,242 2,262,448
Pass [Member] | Commercial, financial and agricultural Financing Receivable [Member]
   
Financing Receivable Recorded Investment [Line Items]    
Loans 1,183,674 1,004,043
Pass [Member] | Commercial Real Estate Construction Financing Receivable [Member]
   
Financing Receivable Recorded Investment [Line Items]    
Loans 142,093 121,168
Pass [Member] | Commercial Mortgage Loans Owner Occupied [Member]
   
Financing Receivable Recorded Investment [Line Items]    
Loans 653,524 555,536
Pass [Member] | One To Four Family Mortgage Loans [Member]
   
Financing Receivable Recorded Investment [Line Items]    
Loans 248,425 223,152
Pass [Member] | Other Real Estate Mortgage Loans [Member]
   
Financing Receivable Recorded Investment [Line Items]    
Loans 365,911 312,473
Pass [Member] | Residential Real Estate Mortgage Loans [Member]
   
Financing Receivable Recorded Investment [Line Items]    
Loans 1,267,860 1,091,161
Pass [Member] | Consumer Portfolio Segment [Member]
   
Financing Receivable Recorded Investment [Line Items]    
Loans 42,615 46,076
Special Mention [Member]
   
Financing Receivable Recorded Investment [Line Items]    
Loans 57,599 59,209
Special Mention [Member] | Commercial, financial and agricultural Financing Receivable [Member]
   
Financing Receivable Recorded Investment [Line Items]    
Loans 33,412 19,172
Special Mention [Member] | Commercial Real Estate Construction Financing Receivable [Member]
   
Financing Receivable Recorded Investment [Line Items]    
Loans 3,492 22,771
Special Mention [Member] | Commercial Mortgage Loans Owner Occupied [Member]
   
Financing Receivable Recorded Investment [Line Items]    
Loans 9,463 4,142
Special Mention [Member] | One To Four Family Mortgage Loans [Member]
   
Financing Receivable Recorded Investment [Line Items]    
Loans 1,393 6,379
Special Mention [Member] | Other Real Estate Mortgage Loans [Member]
   
Financing Receivable Recorded Investment [Line Items]    
Loans 9,788 6,674
Special Mention [Member] | Residential Real Estate Mortgage Loans [Member]
   
Financing Receivable Recorded Investment [Line Items]    
Loans 20,644 17,195
Special Mention [Member] | Consumer Portfolio Segment [Member]
   
Financing Receivable Recorded Investment [Line Items]    
Loans 51 71
Substandard [Member]
   
Financing Receivable Recorded Investment [Line Items]    
Loans 38,132 41,525
Substandard [Member] | Commercial, financial and agricultural Financing Receivable [Member]
   
Financing Receivable Recorded Investment [Line Items]    
Loans 5,867 7,775
Substandard [Member] | Commercial Real Estate Construction Financing Receivable [Member]
   
Financing Receivable Recorded Investment [Line Items]    
Loans 11,010 14,422
Substandard [Member] | Commercial Mortgage Loans Owner Occupied [Member]
   
Financing Receivable Recorded Investment [Line Items]    
Loans 4,414 8,363
Substandard [Member] | One To Four Family Mortgage Loans [Member]
   
Financing Receivable Recorded Investment [Line Items]    
Loans 12,326 6,378
Substandard [Member] | Other Real Estate Mortgage Loans [Member]
   
Financing Receivable Recorded Investment [Line Items]    
Loans 3,791 4,452
Substandard [Member] | Residential Real Estate Mortgage Loans [Member]
   
Financing Receivable Recorded Investment [Line Items]    
Loans 20,531 19,193
Substandard [Member] | Consumer Portfolio Segment [Member]
   
Financing Receivable Recorded Investment [Line Items]    
Loans 724 135
Doubtful [Member]
   
Financing Receivable Recorded Investment [Line Items]    
Loans 0 0
Doubtful [Member] | Commercial, financial and agricultural Financing Receivable [Member]
   
Financing Receivable Recorded Investment [Line Items]    
Loans 0 0
Doubtful [Member] | Commercial Real Estate Construction Financing Receivable [Member]
   
Financing Receivable Recorded Investment [Line Items]    
Loans 0 0
Doubtful [Member] | Commercial Mortgage Loans Owner Occupied [Member]
   
Financing Receivable Recorded Investment [Line Items]    
Loans 0 0
Doubtful [Member] | One To Four Family Mortgage Loans [Member]
   
Financing Receivable Recorded Investment [Line Items]    
Loans 0 0
Doubtful [Member] | Other Real Estate Mortgage Loans [Member]
   
Financing Receivable Recorded Investment [Line Items]    
Loans 0 0
Doubtful [Member] | Residential Real Estate Mortgage Loans [Member]
   
Financing Receivable Recorded Investment [Line Items]    
Loans 0 0
Doubtful [Member] | Consumer Portfolio Segment [Member]
   
Financing Receivable Recorded Investment [Line Items]    
Loans $ 0 $ 0