| 
           LOANS AND ALLOWANCE FOR LOAN LOSSES (Purchased Impaired Commercial and Consumer Loan Portfolios by Class) (Details) (USD $) In Thousands, unless otherwise specified 
         | 
        
           Sep. 30, 2014 
         | 
        
           Dec. 31, 2013 
         | 
        
           Sep. 30, 2013 
         | 
        
           Dec. 31, 2012 
         | 
      
      
        | Schedule of purchased impaired commercial and consumer loan portfolios, by class | 
         
 | 
         
 | 
         
 | 
         
 | 
      
      
        | Current | 
        $ 4,972,573
 | 
        $ 2,994,187
 | 
         
 | 
         
 | 
      
      
        | Fair value of loans acquired with a deterioration of credit quality | 
        119,743
 | 
        3,622
 | 
        3,951
 | 
         
 | 
      
      
        | 
           Commercial Construction [Member] 
         | 
         
 | 
         
 | 
         
 | 
         
 | 
      
      
        | Schedule of purchased impaired commercial and consumer loan portfolios, by class | 
         
 | 
         
 | 
         
 | 
         
 | 
      
      
        | Current | 
        298,449
 | 
        212,079
 | 
         
 | 
         
 | 
      
      
        | Fair value of loans acquired with a deterioration of credit quality | 
        4,455
 | 
          
 | 
         
 | 
         
 | 
      
      
        | 
           Commercial Real Estate - Owner Occupied [Member] 
         | 
         
 | 
         
 | 
         
 | 
         
 | 
      
      
        | Schedule of purchased impaired commercial and consumer loan portfolios, by class | 
         
 | 
         
 | 
         
 | 
         
 | 
      
      
        | Current | 
        821,891
 | 
        497,955
 | 
         
 | 
         
 | 
      
      
        | Fair value of loans acquired with a deterioration of credit quality | 
        27,710
 | 
          
 | 
         
 | 
         
 | 
      
      
        | 
           Commercial Real Estate - Non-Owner Occupied [Member] 
         | 
         
 | 
         
 | 
         
 | 
         
 | 
      
      
        | Schedule of purchased impaired commercial and consumer loan portfolios, by class | 
         
 | 
         
 | 
         
 | 
         
 | 
      
      
        | Current | 
        1,376,699
 | 
        753,507
 | 
         
 | 
         
 | 
      
      
        | Fair value of loans acquired with a deterioration of credit quality | 
        38,831
 | 
          
 | 
         
 | 
         
 | 
      
      
        | 
           Raw Land and Lots [Member] 
         | 
         
 | 
         
 | 
         
 | 
         
 | 
      
      
        | Schedule of purchased impaired commercial and consumer loan portfolios, by class | 
         
 | 
         
 | 
         
 | 
         
 | 
      
      
        | Current | 
        196,202
 | 
        181,045
 | 
         
 | 
         
 | 
      
      
        | Fair value of loans acquired with a deterioration of credit quality | 
        8,804
 | 
        2,457
 | 
         
 | 
         
 | 
      
      
        | 
           Single Family Investment Real Estate [Member] 
         | 
         
 | 
         
 | 
         
 | 
         
 | 
      
      
        | Schedule of purchased impaired commercial and consumer loan portfolios, by class | 
         
 | 
         
 | 
         
 | 
         
 | 
      
      
        | Current | 
        382,149
 | 
        233,053
 | 
         
 | 
         
 | 
      
      
        | Fair value of loans acquired with a deterioration of credit quality | 
        19,337
 | 
        275
 | 
         
 | 
         
 | 
      
      
        | 
           Commercial and Industrial [Member] 
         | 
         
 | 
         
 | 
         
 | 
         
 | 
      
      
        | Schedule of purchased impaired commercial and consumer loan portfolios, by class | 
         
 | 
         
 | 
         
 | 
         
 | 
      
      
        | Current | 
        370,890
 | 
        211,134
 | 
         
 | 
         
 | 
      
      
        | Fair value of loans acquired with a deterioration of credit quality | 
        4,642
 | 
          
 | 
         
 | 
         
 | 
      
      
        | 
           Other Commercial [Member] 
         | 
         
 | 
         
 | 
         
 | 
         
 | 
      
      
        | Schedule of purchased impaired commercial and consumer loan portfolios, by class | 
         
 | 
         
 | 
         
 | 
         
 | 
      
      
        | Current | 
        74,415
 | 
        52,226
 | 
         
 | 
         
 | 
      
      
        | Fair value of loans acquired with a deterioration of credit quality | 
        2,242
 | 
          
 | 
         
 | 
         
 | 
      
      
        | 
           Indirect Auto [Member] 
         | 
         
 | 
         
 | 
         
 | 
         
 | 
      
      
        | Schedule of purchased impaired commercial and consumer loan portfolios, by class | 
         
 | 
         
 | 
         
 | 
         
 | 
      
      
        | Current | 
        192,789
 | 
        171,998
 | 
         
 | 
         
 | 
      
      
        | Fair value of loans acquired with a deterioration of credit quality | 
          
 | 
        7
 | 
         
 | 
         
 | 
      
      
        | 
           Mortgage [Member] 
         | 
         
 | 
         
 | 
         
 | 
         
 | 
      
      
        | Schedule of purchased impaired commercial and consumer loan portfolios, by class | 
         
 | 
         
 | 
         
 | 
         
 | 
      
      
        | Current | 
        450,764
 | 
        225,649
 | 
         
 | 
         
 | 
      
      
        | Fair value of loans acquired with a deterioration of credit quality | 
        9,367
 | 
          
 | 
         
 | 
         
 | 
      
      
        | 
           Consumer Construction [Member] 
         | 
         
 | 
         
 | 
         
 | 
         
 | 
      
      
        | Schedule of purchased impaired commercial and consumer loan portfolios, by class | 
         
 | 
         
 | 
         
 | 
         
 | 
      
      
        | Current | 
        74,846
 | 
        48,776
 | 
         
 | 
         
 | 
      
      
        | Fair value of loans acquired with a deterioration of credit quality | 
        534
 | 
          
 | 
         
 | 
         
 | 
      
      
        | 
           HELOCs [Member] 
         | 
         
 | 
         
 | 
         
 | 
         
 | 
      
      
        | Schedule of purchased impaired commercial and consumer loan portfolios, by class | 
         
 | 
         
 | 
         
 | 
         
 | 
      
      
        | Current | 
        487,551
 | 
        277,013
 | 
         
 | 
         
 | 
      
      
        | Fair value of loans acquired with a deterioration of credit quality | 
        2,121
 | 
        787
 | 
         
 | 
         
 | 
      
      
        | 
           Other Consumer [Member] 
         | 
         
 | 
         
 | 
         
 | 
         
 | 
      
      
        | Schedule of purchased impaired commercial and consumer loan portfolios, by class | 
         
 | 
         
 | 
         
 | 
         
 | 
      
      
        | Current | 
        182,655
 | 
        69,174
 | 
         
 | 
         
 | 
      
      
        | Fair value of loans acquired with a deterioration of credit quality | 
        1,700
 | 
        96
 | 
         
 | 
         
 | 
      
      
        | 
           Purchased Impaired [Member] 
         | 
         
 | 
         
 | 
         
 | 
         
 | 
      
      
        | Schedule of purchased impaired commercial and consumer loan portfolios, by class | 
         
 | 
         
 | 
         
 | 
         
 | 
      
      
        | 30-89 Days Past Due | 
        11,729
 | 
        40
 | 
         
 | 
         
 | 
      
      
        | Greater than 90 Days | 
        11,493
 | 
        31
 | 
         
 | 
         
 | 
      
      
        | Current | 
        96,521
 | 
        3,551
 | 
         
 | 
         
 | 
      
      
        | Fair value of loans acquired with a deterioration of credit quality | 
        119,743
 | 
        3,622
 | 
        3,951
 | 
        4,565
 | 
      
      
        | 
           Purchased Impaired [Member] | Commercial Construction [Member] 
         | 
         
 | 
         
 | 
         
 | 
         
 | 
      
      
        | Schedule of purchased impaired commercial and consumer loan portfolios, by class | 
         
 | 
         
 | 
         
 | 
         
 | 
      
      
        | 30-89 Days Past Due | 
        382
 | 
         
 | 
         
 | 
         
 | 
      
      
        | Greater than 90 Days | 
        698
 | 
         
 | 
         
 | 
         
 | 
      
      
        | Current | 
        3,375
 | 
         
 | 
         
 | 
         
 | 
      
      
        | Fair value of loans acquired with a deterioration of credit quality | 
        4,455
 | 
         
 | 
         
 | 
         
 | 
      
      
        | 
           Purchased Impaired [Member] | Commercial Real Estate - Owner Occupied [Member] 
         | 
         
 | 
         
 | 
         
 | 
         
 | 
      
      
        | Schedule of purchased impaired commercial and consumer loan portfolios, by class | 
         
 | 
         
 | 
         
 | 
         
 | 
      
      
        | 30-89 Days Past Due | 
        1,218
 | 
         
 | 
         
 | 
         
 | 
      
      
        | Greater than 90 Days | 
        989
 | 
         
 | 
         
 | 
         
 | 
      
      
        | Current | 
        25,503
 | 
         
 | 
         
 | 
         
 | 
      
      
        | Fair value of loans acquired with a deterioration of credit quality | 
        27,710
 | 
         
 | 
         
 | 
         
 | 
      
      
        | 
           Purchased Impaired [Member] | Commercial Real Estate - Non-Owner Occupied [Member] 
         | 
         
 | 
         
 | 
         
 | 
         
 | 
      
      
        | Schedule of purchased impaired commercial and consumer loan portfolios, by class | 
         
 | 
         
 | 
         
 | 
         
 | 
      
      
        | 30-89 Days Past Due | 
        2,531
 | 
         
 | 
         
 | 
         
 | 
      
      
        | Greater than 90 Days | 
        1,776
 | 
         
 | 
         
 | 
         
 | 
      
      
        | Current | 
        34,524
 | 
         
 | 
         
 | 
         
 | 
      
      
        | Fair value of loans acquired with a deterioration of credit quality | 
        38,831
 | 
         
 | 
         
 | 
         
 | 
      
      
        | 
           Purchased Impaired [Member] | Raw Land and Lots [Member] 
         | 
         
 | 
         
 | 
         
 | 
         
 | 
      
      
        | Schedule of purchased impaired commercial and consumer loan portfolios, by class | 
         
 | 
         
 | 
         
 | 
         
 | 
      
      
        | 30-89 Days Past Due | 
        663
 | 
          
 | 
         
 | 
         
 | 
      
      
        | Greater than 90 Days | 
          
 | 
          
 | 
         
 | 
         
 | 
      
      
        | Current | 
        8,141
 | 
        2,457
 | 
         
 | 
         
 | 
      
      
        | Fair value of loans acquired with a deterioration of credit quality | 
        8,804
 | 
        2,457
 | 
         
 | 
         
 | 
      
      
        | 
           Purchased Impaired [Member] | Single Family Investment Real Estate [Member] 
         | 
         
 | 
         
 | 
         
 | 
         
 | 
      
      
        | Schedule of purchased impaired commercial and consumer loan portfolios, by class | 
         
 | 
         
 | 
         
 | 
         
 | 
      
      
        | 30-89 Days Past Due | 
        1,903
 | 
          
 | 
         
 | 
         
 | 
      
      
        | Greater than 90 Days | 
        2,745
 | 
          
 | 
         
 | 
         
 | 
      
      
        | Current | 
        14,689
 | 
        275
 | 
         
 | 
         
 | 
      
      
        | Fair value of loans acquired with a deterioration of credit quality | 
        19,337
 | 
        275
 | 
         
 | 
         
 | 
      
      
        | 
           Purchased Impaired [Member] | Commercial and Industrial [Member] 
         | 
         
 | 
         
 | 
         
 | 
         
 | 
      
      
        | Schedule of purchased impaired commercial and consumer loan portfolios, by class | 
         
 | 
         
 | 
         
 | 
         
 | 
      
      
        | 30-89 Days Past Due | 
        592
 | 
         
 | 
         
 | 
         
 | 
      
      
        | Greater than 90 Days | 
        277
 | 
         
 | 
         
 | 
         
 | 
      
      
        | Current | 
        3,773
 | 
         
 | 
         
 | 
         
 | 
      
      
        | Fair value of loans acquired with a deterioration of credit quality | 
        4,642
 | 
         
 | 
         
 | 
         
 | 
      
      
        | 
           Purchased Impaired [Member] | Other Commercial [Member] 
         | 
         
 | 
         
 | 
         
 | 
         
 | 
      
      
        | Schedule of purchased impaired commercial and consumer loan portfolios, by class | 
         
 | 
         
 | 
         
 | 
         
 | 
      
      
        | 30-89 Days Past Due | 
        514
 | 
         
 | 
         
 | 
         
 | 
      
      
        | Greater than 90 Days | 
        791
 | 
         
 | 
         
 | 
         
 | 
      
      
        | Current | 
        937
 | 
         
 | 
         
 | 
         
 | 
      
      
        | Fair value of loans acquired with a deterioration of credit quality | 
        2,242
 | 
         
 | 
         
 | 
         
 | 
      
      
        | 
           Purchased Impaired [Member] | Indirect Auto [Member] 
         | 
         
 | 
         
 | 
         
 | 
         
 | 
      
      
        | Schedule of purchased impaired commercial and consumer loan portfolios, by class | 
         
 | 
         
 | 
         
 | 
         
 | 
      
      
        | 30-89 Days Past Due | 
         
 | 
          
 | 
         
 | 
         
 | 
      
      
        | Greater than 90 Days | 
         
 | 
          
 | 
         
 | 
         
 | 
      
      
        | Current | 
         
 | 
        7
 | 
         
 | 
         
 | 
      
      
        | Fair value of loans acquired with a deterioration of credit quality | 
         
 | 
        7
 | 
         
 | 
         
 | 
      
      
        | 
           Purchased Impaired [Member] | Mortgage [Member] 
         | 
         
 | 
         
 | 
         
 | 
         
 | 
      
      
        | Schedule of purchased impaired commercial and consumer loan portfolios, by class | 
         
 | 
         
 | 
         
 | 
         
 | 
      
      
        | 30-89 Days Past Due | 
        3,342
 | 
         
 | 
         
 | 
         
 | 
      
      
        | Greater than 90 Days | 
        2,884
 | 
         
 | 
         
 | 
         
 | 
      
      
        | Current | 
        3,141
 | 
         
 | 
         
 | 
         
 | 
      
      
        | Fair value of loans acquired with a deterioration of credit quality | 
        9,367
 | 
         
 | 
         
 | 
         
 | 
      
      
        | 
           Purchased Impaired [Member] | Consumer Construction [Member] 
         | 
         
 | 
         
 | 
         
 | 
         
 | 
      
      
        | Schedule of purchased impaired commercial and consumer loan portfolios, by class | 
         
 | 
         
 | 
         
 | 
         
 | 
      
      
        | 30-89 Days Past Due | 
          
 | 
         
 | 
         
 | 
         
 | 
      
      
        | Greater than 90 Days | 
        534
 | 
         
 | 
         
 | 
         
 | 
      
      
        | Fair value of loans acquired with a deterioration of credit quality | 
        534
 | 
         
 | 
         
 | 
         
 | 
      
      
        | 
           Purchased Impaired [Member] | HELOCs [Member] 
         | 
         
 | 
         
 | 
         
 | 
         
 | 
      
      
        | Schedule of purchased impaired commercial and consumer loan portfolios, by class | 
         
 | 
         
 | 
         
 | 
         
 | 
      
      
        | 30-89 Days Past Due | 
        399
 | 
          
 | 
         
 | 
         
 | 
      
      
        | Greater than 90 Days | 
        625
 | 
        31
 | 
         
 | 
         
 | 
      
      
        | Current | 
        1,097
 | 
        756
 | 
         
 | 
         
 | 
      
      
        | Fair value of loans acquired with a deterioration of credit quality | 
        2,121
 | 
        787
 | 
         
 | 
         
 | 
      
      
        | 
           Purchased Impaired [Member] | Other Consumer [Member] 
         | 
         
 | 
         
 | 
         
 | 
         
 | 
      
      
        | Schedule of purchased impaired commercial and consumer loan portfolios, by class | 
         
 | 
         
 | 
         
 | 
         
 | 
      
      
        | 30-89 Days Past Due | 
        185
 | 
        40
 | 
         
 | 
         
 | 
      
      
        | Greater than 90 Days | 
        174
 | 
          
 | 
         
 | 
         
 | 
      
      
        | Current | 
        1,341
 | 
        56
 | 
         
 | 
         
 | 
      
      
        | Fair value of loans acquired with a deterioration of credit quality | 
        $ 1,700
 | 
        $ 96
 | 
         
 | 
         
 |