Quarterly report pursuant to Section 13 or 15(d)

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

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LOANS (Analysis of Allowance For Loan Losses By Portfolio Segment) (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2015
Jun. 30, 2014
Jun. 30, 2015
Jun. 30, 2014
Dec. 31, 2014
Allowance For Loan Losses          
Balance, beginning of year $ 37,356 $ 31,728 $ 35,629 [1] $ 30,663  
Charge-offs (1,471) (1,375) (2,368) (2,682)  
Recoveries 73 193 292 251  
Provision 4,062 2,438 6,467 4,752  
Balance, end of year 40,020 32,984 40,020 32,984  
Individually Evaluated for Impairment 6,384   6,384   $ 5,094
Collectively Evaluated for Impairment 33,636   33,636   30,535
Ending Balance 3,863,734   3,863,734   3,359,858 [1]
Individually Evaluated for Impairment 47,067   47,067   26,725
Collectively Evaluated for Impairment 3,816,667   3,816,667   3,333,133
Commercial Financial and Agricultural Financing Receivable [Member]          
Allowance For Loan Losses          
Balance, beginning of year 16,857 13,505 16,079 13,576  
Charge-offs (1,151) (142) (1,228) (1,364)  
Recoveries 6 1 25 46  
Provision 3,340 273 4,176 1,379  
Balance, end of year 19,052 13,637 19,052 13,637  
Individually Evaluated for Impairment 3,235   3,235   1,344
Collectively Evaluated for Impairment 15,817   15,817   14,735
Ending Balance 1,630,134   1,630,134   1,495,092
Individually Evaluated for Impairment 26,030   26,030   10,350
Collectively Evaluated for Impairment 1,604,104   1,604,104   1,484,742
Residential Real Estate Mortgage Loans [Member]          
Allowance For Loan Losses          
Balance, beginning of year 13,546 10,837 12,112 10,065  
Charge-offs (208) (890) (641) (894)  
Recoveries 2 10 103 14  
Provision 831 1,566 2,597 2,338  
Balance, end of year 14,171 11,523 14,171 11,523  
Individually Evaluated for Impairment 1,252   1,252   1,636
Collectively Evaluated for Impairment 12,919   12,919   10,476
Ending Balance 1,950,063   1,950,063   1,598,735
Individually Evaluated for Impairment 14,564   14,564   10,029
Collectively Evaluated for Impairment 1,935,499   1,935,499   1,588,706
Consumer Portfolio Segment [Member]          
Allowance For Loan Losses          
Balance, beginning of year 1,064 1,045 1,043 944  
Charge-offs (19) (18) (24) (76)  
Recoveries 0 2 0 3  
Provision 78 61 104 219  
Balance, end of year 1,123 1,090 1,123 1,090  
Individually Evaluated for Impairment 664   664   666
Collectively Evaluated for Impairment 459   459   377
Ending Balance 63,930   63,930   57,262
Individually Evaluated for Impairment 685   685   666
Collectively Evaluated for Impairment 63,245   63,245   56,596
Construction Loans [Member] | Commercial Real Estate Portfolio Segment [Member]          
Allowance For Loan Losses          
Balance, beginning of year 5,889 6,341 6,395 6,078  
Charge-offs (93) (325) (475) (348)  
Recoveries 65 180 164 188  
Provision (187) 538 (410) 816  
Balance, end of year 5,674 $ 6,734 5,674 $ 6,734  
Individually Evaluated for Impairment 1,233   1,233   1,448
Collectively Evaluated for Impairment 4,441   4,441   4,947
Ending Balance 219,607   219,607   208,769
Individually Evaluated for Impairment 5,788   5,788   5,680
Collectively Evaluated for Impairment $ 213,819   $ 213,819   $ 203,089
[1] derived from audited financial statements