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
Jun. 30, 2014
Dec. 31, 2013
Financing Receivable Recorded Investment [Line Items]    
Loans $ 3,053,989 $ 2,858,868
Commercial Financial and Agricultural Financing Receivable [Member]
   
Financing Receivable Recorded Investment [Line Items]    
Loans 1,362,757 1,278,649
Commercial Real Estate Construction Financing Receivable [Member]
   
Financing Receivable Recorded Investment [Line Items]    
Loans 178,033 151,868
Commercial Mortgage Loans Owner Occupied [Member]
   
Financing Receivable Recorded Investment [Line Items]    
Loans 708,294 710,372
One To Four Family Mortgage Loans [Member]
   
Financing Receivable Recorded Investment [Line Items]    
Loans 296,220 278,621
Other Real Estate Mortgage Loans [Member]
   
Financing Receivable Recorded Investment [Line Items]    
Loans 457,845 391,396
Residential Real Estate Mortgage Loans [Member]
   
Financing Receivable Recorded Investment [Line Items]    
Loans 1,462,359 1,380,389
Consumer Portfolio Segment [Member]
   
Financing Receivable Recorded Investment [Line Items]    
Loans 50,840 47,962
Pass [Member]
   
Financing Receivable Recorded Investment [Line Items]    
Loans 2,952,992 2,765,716
Pass [Member] | Commercial Financial and Agricultural Financing Receivable [Member]
   
Financing Receivable Recorded Investment [Line Items]    
Loans 1,320,071 1,238,109
Pass [Member] | Commercial Real Estate Construction Financing Receivable [Member]
   
Financing Receivable Recorded Investment [Line Items]    
Loans 164,167 139,239
Pass [Member] | Commercial Mortgage Loans Owner Occupied [Member]
   
Financing Receivable Recorded Investment [Line Items]    
Loans 690,258 696,687
Pass [Member] | One To Four Family Mortgage Loans [Member]
   
Financing Receivable Recorded Investment [Line Items]    
Loans 287,379 265,019
Pass [Member] | Other Real Estate Mortgage Loans [Member]
   
Financing Receivable Recorded Investment [Line Items]    
Loans 441,072 379,419
Pass [Member] | Residential Real Estate Mortgage Loans [Member]
   
Financing Receivable Recorded Investment [Line Items]    
Loans 1,418,709 1,341,125
Pass [Member] | Consumer Portfolio Segment [Member]
   
Financing Receivable Recorded Investment [Line Items]    
Loans 50,045 47,243
Special Mention [Member]
   
Financing Receivable Recorded Investment [Line Items]    
Loans 72,304 59,255
Special Mention [Member] | Commercial Financial and Agricultural Financing Receivable [Member]
   
Financing Receivable Recorded Investment [Line Items]    
Loans 38,801 34,883
Special Mention [Member] | Commercial Real Estate Construction Financing Receivable [Member]
   
Financing Receivable Recorded Investment [Line Items]    
Loans 5,260 3,392
Special Mention [Member] | Commercial Mortgage Loans Owner Occupied [Member]
   
Financing Receivable Recorded Investment [Line Items]    
Loans 15,830 11,545
Special Mention [Member] | One To Four Family Mortgage Loans [Member]
   
Financing Receivable Recorded Investment [Line Items]    
Loans 589 1,253
Special Mention [Member] | Other Real Estate Mortgage Loans [Member]
   
Financing Receivable Recorded Investment [Line Items]    
Loans 11,824 8,179
Special Mention [Member] | Residential Real Estate Mortgage Loans [Member]
   
Financing Receivable Recorded Investment [Line Items]    
Loans 28,243 20,977
Special Mention [Member] | Consumer Portfolio Segment [Member]
   
Financing Receivable Recorded Investment [Line Items]    
Loans 0 3
Substandard [Member]
   
Financing Receivable Recorded Investment [Line Items]    
Loans 28,693 33,897
Substandard [Member] | Commercial Financial and Agricultural Financing Receivable [Member]
   
Financing Receivable Recorded Investment [Line Items]    
Loans 3,885 5,657
Substandard [Member] | Commercial Real Estate Construction Financing Receivable [Member]
   
Financing Receivable Recorded Investment [Line Items]    
Loans 8,606 9,237
Substandard [Member] | Commercial Mortgage Loans Owner Occupied [Member]
   
Financing Receivable Recorded Investment [Line Items]    
Loans 2,206 2,140
Substandard [Member] | One To Four Family Mortgage Loans [Member]
   
Financing Receivable Recorded Investment [Line Items]    
Loans 8,252 12,349
Substandard [Member] | Other Real Estate Mortgage Loans [Member]
   
Financing Receivable Recorded Investment [Line Items]    
Loans 4,949 3,798
Substandard [Member] | Residential Real Estate Mortgage Loans [Member]
   
Financing Receivable Recorded Investment [Line Items]    
Loans 15,407 18,287
Substandard [Member] | Consumer Portfolio Segment [Member]
   
Financing Receivable Recorded Investment [Line Items]    
Loans 795 716
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