Annual report pursuant to Section 13 and 15(d)

LOANS AND ALLOWANCE FOR LOAN LOSSES (Loans Receivables Related Risk Rating Including Purchased Impaired Loans) (Details)

v3.3.1.900
LOANS AND ALLOWANCE FOR LOAN LOSSES (Loans Receivables Related Risk Rating Including Purchased Impaired Loans) (Details) - USD ($)
$ in Thousands
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Financing Receivable, Recorded Investment [Line Items]      
Loans and Leases Receivable, Net of Deferred Income $ 5,671,462 $ 5,345,996 $ 3,039,368
Purchased Impaired [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans and Leases Receivable, Net of Deferred Income 73,737 105,788 3,622
Commercial [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans and Leases Receivable, Net of Deferred Income 4,148,118 3,824,483 2,163,705
Commercial [Member] | Construction Loans [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans and Leases Receivable, Net of Deferred Income 484,768 341,280  
Commercial [Member] | Commercial Real Estate - Owner Occupied [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans and Leases Receivable, Net of Deferred Income 860,086 875,443  
Commercial [Member] | Commercial Real Estate - Non-Owner Occupied [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans and Leases Receivable, Net of Deferred Income 1,618,605 1,509,159  
Commercial [Member] | Raw Land and Lots [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans and Leases Receivable, Net of Deferred Income 195,665 211,225  
Commercial [Member] | Single Family Investment Real Estate [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans and Leases Receivable, Net of Deferred Income 429,489 412,494  
Commercial [Member] | Commercial and Industrial [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans and Leases Receivable, Net of Deferred Income 467,613 393,776  
Commercial [Member] | Other Commercial [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans and Leases Receivable, Net of Deferred Income 91,892 81,106  
Commercial [Member] | Purchased Impaired [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans and Leases Receivable, Net of Deferred Income 65,410 94,235 $ 2,732
Commercial [Member] | Purchased Impaired [Member] | Construction Loans [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans and Leases Receivable, Net of Deferred Income 1,404 3,782  
Commercial [Member] | Purchased Impaired [Member] | Commercial Real Estate - Owner Occupied [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans and Leases Receivable, Net of Deferred Income 27,388 31,167  
Commercial [Member] | Purchased Impaired [Member] | Commercial Real Estate - Non-Owner Occupied [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans and Leases Receivable, Net of Deferred Income 15,128 28,869  
Commercial [Member] | Purchased Impaired [Member] | Raw Land and Lots [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans and Leases Receivable, Net of Deferred Income 4,524 7,427  
Commercial [Member] | Purchased Impaired [Member] | Single Family Investment Real Estate [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans and Leases Receivable, Net of Deferred Income 14,371 16,879  
Commercial [Member] | Purchased Impaired [Member] | Commercial and Industrial [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans and Leases Receivable, Net of Deferred Income 1,851 3,855  
Commercial [Member] | Purchased Impaired [Member] | Other Commercial [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans and Leases Receivable, Net of Deferred Income 744 2,256  
Commercial [Member] | Purchased Impaired [Member] | 4 [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans and Leases Receivable, Net of Deferred Income $ 17,212 $ 9,170  
Commercial [Member] | Purchased Impaired [Member] | 4 [Member] | Construction Loans [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans and Leases Receivable, Net of Deferred Income  
Commercial [Member] | Purchased Impaired [Member] | 4 [Member] | Commercial Real Estate - Owner Occupied [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans and Leases Receivable, Net of Deferred Income $ 5,260 $ 1,525  
Commercial [Member] | Purchased Impaired [Member] | 4 [Member] | Commercial Real Estate - Non-Owner Occupied [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans and Leases Receivable, Net of Deferred Income 4,798 2,837  
Commercial [Member] | Purchased Impaired [Member] | 4 [Member] | Raw Land and Lots [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans and Leases Receivable, Net of Deferred Income 2,059 1,564  
Commercial [Member] | Purchased Impaired [Member] | 4 [Member] | Single Family Investment Real Estate [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans and Leases Receivable, Net of Deferred Income 4,868 2,807  
Commercial [Member] | Purchased Impaired [Member] | 4 [Member] | Commercial and Industrial [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans and Leases Receivable, Net of Deferred Income 144 $ 437  
Commercial [Member] | Purchased Impaired [Member] | 4 [Member] | Other Commercial [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans and Leases Receivable, Net of Deferred Income 83  
Commercial [Member] | Purchased Impaired [Member] | 5 [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans and Leases Receivable, Net of Deferred Income $ 9,480 $ 5,922  
Commercial [Member] | Purchased Impaired [Member] | 5 [Member] | Construction Loans [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans and Leases Receivable, Net of Deferred Income  
Commercial [Member] | Purchased Impaired [Member] | 5 [Member] | Commercial Real Estate - Owner Occupied [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans and Leases Receivable, Net of Deferred Income $ 1,633 $ 3,546  
Commercial [Member] | Purchased Impaired [Member] | 5 [Member] | Commercial Real Estate - Non-Owner Occupied [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans and Leases Receivable, Net of Deferred Income 5,893 934  
Commercial [Member] | Purchased Impaired [Member] | 5 [Member] | Raw Land and Lots [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans and Leases Receivable, Net of Deferred Income 277 189  
Commercial [Member] | Purchased Impaired [Member] | 5 [Member] | Single Family Investment Real Estate [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans and Leases Receivable, Net of Deferred Income 1,629 $ 1,253  
Commercial [Member] | Purchased Impaired [Member] | 5 [Member] | Commercial and Industrial [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans and Leases Receivable, Net of Deferred Income $ 48  
Commercial [Member] | Purchased Impaired [Member] | 5 [Member] | Other Commercial [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans and Leases Receivable, Net of Deferred Income  
Commercial [Member] | Purchased Impaired [Member] | 6 [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans and Leases Receivable, Net of Deferred Income $ 23,214 $ 43,779  
Commercial [Member] | Purchased Impaired [Member] | 6 [Member] | Construction Loans [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans and Leases Receivable, Net of Deferred Income 61 3,130  
Commercial [Member] | Purchased Impaired [Member] | 6 [Member] | Commercial Real Estate - Owner Occupied [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans and Leases Receivable, Net of Deferred Income 13,896 10,880  
Commercial [Member] | Purchased Impaired [Member] | 6 [Member] | Commercial Real Estate - Non-Owner Occupied [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans and Leases Receivable, Net of Deferred Income 3,187 18,736  
Commercial [Member] | Purchased Impaired [Member] | 6 [Member] | Raw Land and Lots [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans and Leases Receivable, Net of Deferred Income 1,439 3,148  
Commercial [Member] | Purchased Impaired [Member] | 6 [Member] | Single Family Investment Real Estate [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans and Leases Receivable, Net of Deferred Income 3,821 6,462  
Commercial [Member] | Purchased Impaired [Member] | 6 [Member] | Commercial and Industrial [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans and Leases Receivable, Net of Deferred Income 321 913  
Commercial [Member] | Purchased Impaired [Member] | 6 [Member] | Other Commercial [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans and Leases Receivable, Net of Deferred Income 489 510  
Commercial [Member] | Purchased Impaired [Member] | 7 [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans and Leases Receivable, Net of Deferred Income 15,483 34,878  
Commercial [Member] | Purchased Impaired [Member] | 7 [Member] | Construction Loans [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans and Leases Receivable, Net of Deferred Income 1,343 194  
Commercial [Member] | Purchased Impaired [Member] | 7 [Member] | Commercial Real Estate - Owner Occupied [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans and Leases Receivable, Net of Deferred Income 6,599 15,216  
Commercial [Member] | Purchased Impaired [Member] | 7 [Member] | Commercial Real Estate - Non-Owner Occupied [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans and Leases Receivable, Net of Deferred Income 1,250 6,362  
Commercial [Member] | Purchased Impaired [Member] | 7 [Member] | Raw Land and Lots [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans and Leases Receivable, Net of Deferred Income 749 2,526  
Commercial [Member] | Purchased Impaired [Member] | 7 [Member] | Single Family Investment Real Estate [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans and Leases Receivable, Net of Deferred Income 4,053 6,357  
Commercial [Member] | Purchased Impaired [Member] | 7 [Member] | Commercial and Industrial [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans and Leases Receivable, Net of Deferred Income 1,317 2,477  
Commercial [Member] | Purchased Impaired [Member] | 7 [Member] | Other Commercial [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans and Leases Receivable, Net of Deferred Income 172 1,746  
Commercial [Member] | Purchased Impaired [Member] | 8 [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans and Leases Receivable, Net of Deferred Income $ 21 486  
Commercial [Member] | Purchased Impaired [Member] | 8 [Member] | Construction Loans [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans and Leases Receivable, Net of Deferred Income 458  
Commercial [Member] | Purchased Impaired [Member] | 8 [Member] | Commercial Real Estate - Owner Occupied [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans and Leases Receivable, Net of Deferred Income    
Commercial [Member] | Purchased Impaired [Member] | 8 [Member] | Commercial Real Estate - Non-Owner Occupied [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans and Leases Receivable, Net of Deferred Income    
Commercial [Member] | Purchased Impaired [Member] | 8 [Member] | Raw Land and Lots [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans and Leases Receivable, Net of Deferred Income    
Commercial [Member] | Purchased Impaired [Member] | 8 [Member] | Single Family Investment Real Estate [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans and Leases Receivable, Net of Deferred Income    
Commercial [Member] | Purchased Impaired [Member] | 8 [Member] | Commercial and Industrial [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans and Leases Receivable, Net of Deferred Income $ 21 $ 28  
Commercial [Member] | Purchased Impaired [Member] | 8 [Member] | Other Commercial [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans and Leases Receivable, Net of Deferred Income