Quarterly report pursuant to Section 13 or 15(d)

LOANS (Analysis of Allowance For Loan Losses By Portfolio Segment) (Detail)

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LOANS (Analysis of Allowance For Loan Losses By Portfolio Segment) (Detail) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 9 Months Ended
Sep. 30, 2014
Sep. 30, 2013
Sep. 30, 2014
Sep. 30, 2013
Dec. 31, 2013
Allowance For Loan Losses          
Balance, beginning of year $ 32,984 $ 28,757 $ 30,663 $ 26,258  
Charge-offs (1,421) (3,031) (4,103) (8,297)  
Recoveries 131 167 382 314  
Provision 2,748 3,034 7,500 10,652  
Balance, end of year 34,442 28,927 34,442 28,927  
Individually Evaluated for Impairment 6,326   6,326   6,270
Collectively Evaluated for Impairment 28,116   28,116   24,393
Ending Balance 3,159,772   3,159,772   2,858,868
Individually Evaluated for Impairment 26,703   26,703   31,966
Collectively Evaluated for Impairment 3,133,069   3,133,069   2,826,902
Commercial Financial and Agricultural Financing Receivable [Member]
         
Allowance For Loan Losses          
Balance, beginning of year 13,637 13,794 13,576 11,061  
Charge-offs (531) (849) (1,895) (1,838)  
Recoveries 0 13 46 50  
Provision 1,364 910 2,743 4,595  
Balance, end of year 14,470 13,868 14,470 13,868  
Individually Evaluated for Impairment 1,229   1,229   1,992
Collectively Evaluated for Impairment 13,241   13,241   11,584
Ending Balance 1,382,607   1,382,607   1,278,649
Individually Evaluated for Impairment 3,629   3,629   3,827
Collectively Evaluated for Impairment 1,378,978   1,378,978   1,274,822
Commercial Real Estate Construction Financing Receivable [Member]
         
Allowance For Loan Losses          
Balance, beginning of year 6,734 5,788 6,078 6,907  
Charge-offs (610) (394) (958) (4,271)  
Recoveries 97 124 285 226  
Provision 461 309 1,277 2,965  
Balance, end of year 6,682 5,827 6,682 5,827  
Individually Evaluated for Impairment 1,764   1,764   1,597
Collectively Evaluated for Impairment 4,918   4,918   4,481
Ending Balance 194,506   194,506   151,868
Individually Evaluated for Impairment 7,816   7,816   9,238
Collectively Evaluated for Impairment 186,690   186,690   142,630
Residential Real Estate Mortgage Loans [Member]
         
Allowance For Loan Losses          
Balance, beginning of year 11,523 8,856 10,065 7,964  
Charge-offs (149) (1,746) (1,043) (2,016)  
Recoveries 14 24 28 28  
Provision 905 1,248 3,243 2,406  
Balance, end of year 12,293 8,382 12,293 8,382  
Individually Evaluated for Impairment 2,660   2,660   1,982
Collectively Evaluated for Impairment 9,633   9,633   8,083
Ending Balance 1,531,455   1,531,455   1,380,389
Individually Evaluated for Impairment 14,585   14,585   18,202
Collectively Evaluated for Impairment 1,516,870   1,516,870   1,362,187
Consumer Portfolio Segment [Member]
         
Allowance For Loan Losses          
Balance, beginning of year 1,090 319 944 326  
Charge-offs (131) (42) (207) (172)  
Recoveries 20 6 23 10  
Provision 18 567 237 686  
Balance, end of year 997 850 997 850  
Individually Evaluated for Impairment 673   673   699
Collectively Evaluated for Impairment 324   324   245
Ending Balance 51,204   51,204   47,962
Individually Evaluated for Impairment 673   673   699
Collectively Evaluated for Impairment $ 50,531   $ 50,531   $ 47,263