Quarterly report pursuant to Section 13 or 15(d)

LOANS AND ALLOWANCE FOR LOAN LOSSES (Summary of Aging of the Loan Portfolio by Class) (Details)

v3.4.0.3
LOANS AND ALLOWANCE FOR LOAN LOSSES (Summary of Aging of the Loan Portfolio by Class) (Details) - USD ($)
$ in Thousands
Mar. 31, 2016
Dec. 31, 2015
Mar. 31, 2015
Summary of aging of the loan portfolio, by class      
Nonaccrual $ 13,092 $ 11,936  
Current 5,662,251 5,542,840  
Total loans held for investment, net 5,780,502 [1] 5,671,462 [1] $ 5,387,755
30 to 59 Days Past Due [Member]      
Summary of aging of the loan portfolio, by class      
Past Due 23,463 27,787  
60 to 89 Days Past Due [Member]      
Summary of aging of the loan portfolio, by class      
Past Due 5,868 9,333  
Greater Than 90 Days and still Accruing [Member]      
Summary of aging of the loan portfolio, by class      
Past Due 5,723 5,829  
Purchased Impaired [Member]      
Summary of aging of the loan portfolio, by class      
Past Due 70,105 73,737  
Current 61,827 64,455  
Total loans held for investment, net 70,105 73,737 91,346
Purchased Impaired [Member] | Greater Than 90 Days and still Accruing [Member]      
Summary of aging of the loan portfolio, by class      
Past Due 3,502 4,257  
Construction and Land Development [Member]      
Summary of aging of the loan portfolio, by class      
Nonaccrual 2,156 2,113  
Current 765,461 737,958  
Total loans held for investment, net 776,698 749,720 657,581
Construction and Land Development [Member] | 30 to 59 Days Past Due [Member]      
Summary of aging of the loan portfolio, by class      
Past Due 2,676 3,155  
Construction and Land Development [Member] | 60 to 89 Days Past Due [Member]      
Summary of aging of the loan portfolio, by class      
Past Due 724 380  
Construction and Land Development [Member] | Greater Than 90 Days and still Accruing [Member]      
Summary of aging of the loan portfolio, by class      
Past Due 544 128  
Construction and Land Development [Member] | Purchased Impaired [Member]      
Summary of aging of the loan portfolio, by class      
Past Due 5,137 5,986  
Current 4,544 5,376  
Total loans held for investment, net 5,137 5,986 9,529
Construction and Land Development [Member] | Purchased Impaired [Member] | Greater Than 90 Days and still Accruing [Member]      
Summary of aging of the loan portfolio, by class      
Past Due 239 241  
Commercial Real Estate - Owner Occupied [Member]      
Summary of aging of the loan portfolio, by class      
Nonaccrual 2,816 3,904  
Current 816,180 826,859  
Total loans held for investment, net 849,202 860,086 898,222
Commercial Real Estate - Owner Occupied [Member] | 30 to 59 Days Past Due [Member]      
Summary of aging of the loan portfolio, by class      
Past Due 1,787 1,714  
Commercial Real Estate - Owner Occupied [Member] | 60 to 89 Days Past Due [Member]      
Summary of aging of the loan portfolio, by class      
Past Due 963 118  
Commercial Real Estate - Owner Occupied [Member] | Greater Than 90 Days and still Accruing [Member]      
Summary of aging of the loan portfolio, by class      
Past Due 196 103  
Commercial Real Estate - Owner Occupied [Member] | Purchased Impaired [Member]      
Summary of aging of the loan portfolio, by class      
Past Due 27,260 27,388  
Current 24,434 24,837  
Total loans held for investment, net 27,260 27,388 31,004
Commercial Real Estate - Owner Occupied [Member] | Purchased Impaired [Member] | Greater Than 90 Days and still Accruing [Member]      
Summary of aging of the loan portfolio, by class      
Past Due 1,425 1,412  
Commercial Real Estate - Non-Owner Occupied [Member]      
Summary of aging of the loan portfolio, by class      
Nonaccrual   100  
Current 1,281,592 1,255,367  
Total loans held for investment, net 1,296,251 1,270,480 1,180,464
Commercial Real Estate - Non-Owner Occupied [Member] | 30 to 59 Days Past Due [Member]      
Summary of aging of the loan portfolio, by class      
Past Due 24 771  
Commercial Real Estate - Non-Owner Occupied [Member] | 60 to 89 Days Past Due [Member]      
Summary of aging of the loan portfolio, by class      
Past Due 276    
Commercial Real Estate - Non-Owner Occupied [Member] | Greater Than 90 Days and still Accruing [Member]      
Summary of aging of the loan portfolio, by class      
Past Due 723 723  
Commercial Real Estate - Non-Owner Occupied [Member] | Purchased Impaired [Member]      
Summary of aging of the loan portfolio, by class      
Past Due 13,636 13,519  
Current 12,686 12,562  
Total loans held for investment, net 13,636 13,519 16,648
Commercial Real Estate - Non-Owner Occupied [Member] | Purchased Impaired [Member] | Greater Than 90 Days and still Accruing [Member]      
Summary of aging of the loan portfolio, by class      
Past Due 205 202  
Multifamily Real Estate [Member]      
Summary of aging of the loan portfolio, by class      
Current 320,983 320,701  
Total loans held for investment, net 323,270 322,528 298,651
Multifamily Real Estate [Member] | 30 to 59 Days Past Due [Member]      
Summary of aging of the loan portfolio, by class      
Past Due 155    
Multifamily Real Estate [Member] | Greater Than 90 Days and still Accruing [Member]      
Summary of aging of the loan portfolio, by class      
Past Due   272  
Multifamily Real Estate [Member] | Purchased Impaired [Member]      
Summary of aging of the loan portfolio, by class      
Past Due 2,132 1,555  
Current 2,132 1,555  
Total loans held for investment, net 2,132 1,555 3,021
Commercial & Industrial [Member]      
Summary of aging of the loan portfolio, by class      
Nonaccrual 810 429  
Current 449,136 431,916  
Total loans held for investment, net 453,208 435,365 409,867
Commercial & Industrial [Member] | 30 to 59 Days Past Due [Member]      
Summary of aging of the loan portfolio, by class      
Past Due 985 1,056  
Commercial & Industrial [Member] | 60 to 89 Days Past Due [Member]      
Summary of aging of the loan portfolio, by class      
Past Due 284 27  
Commercial & Industrial [Member] | Greater Than 90 Days and still Accruing [Member]      
Summary of aging of the loan portfolio, by class      
Past Due 422 124  
Commercial & Industrial [Member] | Purchased Impaired [Member]      
Summary of aging of the loan portfolio, by class      
Past Due 1,571 1,813  
Current 1,336 1,583  
Total loans held for investment, net 1,571 1,813 3,251
Commercial & Industrial [Member] | Purchased Impaired [Member] | Greater Than 90 Days and still Accruing [Member]      
Summary of aging of the loan portfolio, by class      
Past Due 39 21  
Residential 1-4 Family [Member]      
Summary of aging of the loan portfolio, by class      
Nonaccrual 5,696 3,563  
Current 937,408 928,312  
Total loans held for investment, net 978,478 978,469 970,928
Residential 1-4 Family [Member] | 30 to 59 Days Past Due [Member]      
Summary of aging of the loan portfolio, by class      
Past Due 13,711 15,023  
Residential 1-4 Family [Member] | 60 to 89 Days Past Due [Member]      
Summary of aging of the loan portfolio, by class      
Past Due 1,111 6,774  
Residential 1-4 Family [Member] | Greater Than 90 Days and still Accruing [Member]      
Summary of aging of the loan portfolio, by class      
Past Due 2,247 3,638  
Residential 1-4 Family [Member] | Purchased Impaired [Member]      
Summary of aging of the loan portfolio, by class      
Past Due 18,305 21,159  
Current 15,340 17,093  
Total loans held for investment, net 18,305 21,159 24,654
Residential 1-4 Family [Member] | Purchased Impaired [Member] | Greater Than 90 Days and still Accruing [Member]      
Summary of aging of the loan portfolio, by class      
Past Due 1,048 1,923  
Auto [Member]      
Summary of aging of the loan portfolio, by class      
Nonaccrual 162 192  
Current 239,877 231,264  
Total loans held for investment, net 241,737 234,061 211,293
Auto [Member] | 30 to 59 Days Past Due [Member]      
Summary of aging of the loan portfolio, by class      
Past Due 1,519 2,312  
Auto [Member] | 60 to 89 Days Past Due [Member]      
Summary of aging of the loan portfolio, by class      
Past Due 126 233  
Auto [Member] | Greater Than 90 Days and still Accruing [Member]      
Summary of aging of the loan portfolio, by class      
Past Due 53 60  
HELOC [Member]      
Summary of aging of the loan portfolio, by class      
Nonaccrual 973 1,348  
Current 511,041 509,124  
Total loans held for investment, net 517,122 516,726 514,750
HELOC [Member] | 30 to 59 Days Past Due [Member]      
Summary of aging of the loan portfolio, by class      
Past Due 1,870 2,589  
HELOC [Member] | 60 to 89 Days Past Due [Member]      
Summary of aging of the loan portfolio, by class      
Past Due 388 1,112  
HELOC [Member] | Greater Than 90 Days and still Accruing [Member]      
Summary of aging of the loan portfolio, by class      
Past Due 1,315 762  
HELOC [Member] | Purchased Impaired [Member]      
Summary of aging of the loan portfolio, by class      
Past Due 1,535 1,791  
Current 826 923  
Total loans held for investment, net 1,535 1,791 1,889
HELOC [Member] | Purchased Impaired [Member] | Greater Than 90 Days and still Accruing [Member]      
Summary of aging of the loan portfolio, by class      
Past Due 546 458  
Consumer and all Other [Member]      
Summary of aging of the loan portfolio, by class      
Nonaccrual 479 287  
Current 340,573 301,339  
Total loans held for investment, net 344,536 304,027 245,999
Consumer and all Other [Member] | 30 to 59 Days Past Due [Member]      
Summary of aging of the loan portfolio, by class      
Past Due 736 1,167  
Consumer and all Other [Member] | 60 to 89 Days Past Due [Member]      
Summary of aging of the loan portfolio, by class      
Past Due 1,996 689  
Consumer and all Other [Member] | Greater Than 90 Days and still Accruing [Member]      
Summary of aging of the loan portfolio, by class      
Past Due 223 19  
Consumer and all Other [Member] | Purchased Impaired [Member]      
Summary of aging of the loan portfolio, by class      
Past Due 529 526  
Current 529 526  
Total loans held for investment, net $ 529 $ 526 $ 1,350
[1] Loans, as presented, are net of deferred fees and costs totaling $3.6 million and $3.0 million as of March 31, 2016 and December 31, 2015, respectively.