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, 2016
Jun. 30, 2015
Jun. 30, 2016
Jun. 30, 2015
Dec. 31, 2015
Allowance for loan losses:          
Balance, beginning of year $ 45,145 $ 37,356 $ 43,419 [1] $ 35,629  
Charge-offs (1,989) (1,471) (2,438) (2,368)  
Recoveries 42 73 158 292  
Provision 3,800 4,062 5,859 6,467  
Balance, end of year 46,998 40,020 46,998 40,020  
Individually Evaluated for Impairment 5,876   5,876   $ 5,683
Collectively Evaluated for Impairment 41,122   41,122   37,736
Ending Balance 4,539,338   4,539,338   4,216,375 [1]
Individually Evaluated for Impairment 45,039   45,039   33,491
Collectively Evaluated for Impairment 4,494,299   4,494,299   4,182,884
Commercial Financial and Agricultural Financing Receivable [Member]          
Allowance for loan losses:          
Balance, beginning of year 22,839 16,857 21,495 16,079  
Charge-offs (1,412) (1,151) (1,462) (1,228)  
Recoveries 1 6 4 25  
Provision 2,227 3,340 3,618 4,176  
Balance, end of year 23,655 19,052 23,655 19,052  
Individually Evaluated for Impairment 2,855   2,855   2,698
Collectively Evaluated for Impairment 20,800   20,800   18,797
Ending Balance 1,895,870   1,895,870   1,760,479
Individually Evaluated for Impairment 17,665   17,665   11,513
Collectively Evaluated for Impairment 1,878,205   1,878,205   1,748,966
Construction Loans [Member] | Commercial Real Estate Portfolio Segment [Member]          
Allowance for loan losses:          
Balance, beginning of year 5,005 5,889 5,432 6,395  
Charge-offs (355) (93) (736) (475)  
Recoveries 39 65 55 164  
Provision 590 (187) 528 (410)  
Balance, end of year 5,279 5,674 5,279 5,674  
Individually Evaluated for Impairment 1,319   1,319   1,223
Collectively Evaluated for Impairment 3,960   3,960   4,209
Ending Balance 251,144   251,144   243,267
Individually Evaluated for Impairment 4,972   4,972   4,052
Collectively Evaluated for Impairment 246,172   246,172   239,215
Residential Real Estate Mortgage Loans [Member]          
Allowance for loan losses:          
Balance, beginning of year 16,901 13,546 16,061 12,112  
Charge-offs (191) (208) (191) (641)  
Recoveries 2 2 99 103  
Provision 888 831 1,631 2,597  
Balance, end of year 17,600 14,171 17,600 14,171  
Individually Evaluated for Impairment 1,675   1,675   1,730
Collectively Evaluated for Impairment 15,925   15,925   14,331
Ending Balance 2,337,583   2,337,583   2,157,582
Individually Evaluated for Impairment 22,371   22,371   17,880
Collectively Evaluated for Impairment 2,315,212   2,315,212   2,139,702
Consumer Portfolio Segment [Member]          
Allowance for loan losses:          
Balance, beginning of year 400 1,064 431 1,043  
Charge-offs (31) (19) (49) (24)  
Recoveries 0 0 0 0  
Provision 95 78 82 104  
Balance, end of year 464 $ 1,123 464 $ 1,123  
Individually Evaluated for Impairment 27   27   32
Collectively Evaluated for Impairment 437   437   399
Ending Balance 54,741   54,741   55,047
Individually Evaluated for Impairment 31   31   46
Collectively Evaluated for Impairment $ 54,710   $ 54,710   $ 55,001
[1] Derived from audited financial statements.