Annual report pursuant to Section 13 and 15(d)

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

v3.3.1.900
LOANS AND ALLOWANCE FOR LOAN LOSSES (Loans Receivables Related Risk Rating Excluding 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
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  
Excluding Receivables Acquired With Deteriorated Credit Quality [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans and Leases Receivable, Net of Deferred Income 4,082,708 3,730,248  
Excluding Receivables Acquired With Deteriorated Credit Quality [Member] | 0-3 [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans and Leases Receivable, Net of Deferred Income 1,047,347    
Excluding Receivables Acquired With Deteriorated Credit Quality [Member] | 1-3 [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans and Leases Receivable, Net of Deferred Income   805,908  
Excluding Receivables Acquired With Deteriorated Credit Quality [Member] | 4 [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans and Leases Receivable, Net of Deferred Income 2,845,364 2,662,344  
Excluding Receivables Acquired With Deteriorated Credit Quality [Member] | 5 [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans and Leases Receivable, Net of Deferred Income 81,426 89,056  
Excluding Receivables Acquired With Deteriorated Credit Quality [Member] | 6 [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans and Leases Receivable, Net of Deferred Income 52,852 63,672  
Excluding Receivables Acquired With Deteriorated Credit Quality [Member] | 7 [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans and Leases Receivable, Net of Deferred Income 53,688 $ 109,268  
Excluding Receivables Acquired With Deteriorated Credit Quality [Member] | 8 [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans and Leases Receivable, Net of Deferred Income 2,031  
Excluding Receivables Acquired With Deteriorated Credit Quality [Member] | Commercial [Member] | Construction Loans [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans and Leases Receivable, Net of Deferred Income 483,364 $ 337,498  
Excluding Receivables Acquired With Deteriorated Credit Quality [Member] | Commercial [Member] | Construction Loans [Member] | 0-3 [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans and Leases Receivable, Net of Deferred Income 43,656    
Excluding Receivables Acquired With Deteriorated Credit Quality [Member] | Commercial [Member] | Construction Loans [Member] | 1-3 [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans and Leases Receivable, Net of Deferred Income   22,512  
Excluding Receivables Acquired With Deteriorated Credit Quality [Member] | Commercial [Member] | Construction Loans [Member] | 4 [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans and Leases Receivable, Net of Deferred Income 409,249 289,064  
Excluding Receivables Acquired With Deteriorated Credit Quality [Member] | Commercial [Member] | Construction Loans [Member] | 5 [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans and Leases Receivable, Net of Deferred Income 21,725 11,932  
Excluding Receivables Acquired With Deteriorated Credit Quality [Member] | Commercial [Member] | Construction Loans [Member] | 6 [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans and Leases Receivable, Net of Deferred Income 6,497 10,906  
Excluding Receivables Acquired With Deteriorated Credit Quality [Member] | Commercial [Member] | Construction Loans [Member] | 7 [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans and Leases Receivable, Net of Deferred Income $ 2,237 $ 3,084  
Excluding Receivables Acquired With Deteriorated Credit Quality [Member] | Commercial [Member] | Construction Loans [Member] | 8 [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans and Leases Receivable, Net of Deferred Income  
Excluding Receivables Acquired With Deteriorated Credit Quality [Member] | Commercial [Member] | Commercial Real Estate - Owner Occupied [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans and Leases Receivable, Net of Deferred Income $ 832,698 $ 844,276  
Excluding Receivables Acquired With Deteriorated Credit Quality [Member] | Commercial [Member] | Commercial Real Estate - Owner Occupied [Member] | 0-3 [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans and Leases Receivable, Net of Deferred Income 213,547    
Excluding Receivables Acquired With Deteriorated Credit Quality [Member] | Commercial [Member] | Commercial Real Estate - Owner Occupied [Member] | 1-3 [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans and Leases Receivable, Net of Deferred Income   185,789  
Excluding Receivables Acquired With Deteriorated Credit Quality [Member] | Commercial [Member] | Commercial Real Estate - Owner Occupied [Member] | 4 [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans and Leases Receivable, Net of Deferred Income 587,432 620,587  
Excluding Receivables Acquired With Deteriorated Credit Quality [Member] | Commercial [Member] | Commercial Real Estate - Owner Occupied [Member] | 5 [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans and Leases Receivable, Net of Deferred Income 13,642 15,003  
Excluding Receivables Acquired With Deteriorated Credit Quality [Member] | Commercial [Member] | Commercial Real Estate - Owner Occupied [Member] | 6 [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans and Leases Receivable, Net of Deferred Income 7,214 7,688  
Excluding Receivables Acquired With Deteriorated Credit Quality [Member] | Commercial [Member] | Commercial Real Estate - Owner Occupied [Member] | 7 [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans and Leases Receivable, Net of Deferred Income 8,931 $ 15,209  
Excluding Receivables Acquired With Deteriorated Credit Quality [Member] | Commercial [Member] | Commercial Real Estate - Owner Occupied [Member] | 8 [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans and Leases Receivable, Net of Deferred Income 1,932  
Excluding Receivables Acquired With Deteriorated Credit Quality [Member] | Commercial [Member] | Commercial Real Estate - Non-Owner Occupied [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans and Leases Receivable, Net of Deferred Income 1,603,477 $ 1,480,290  
Excluding Receivables Acquired With Deteriorated Credit Quality [Member] | Commercial [Member] | Commercial Real Estate - Non-Owner Occupied [Member] | 0-3 [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans and Leases Receivable, Net of Deferred Income 493,723    
Excluding Receivables Acquired With Deteriorated Credit Quality [Member] | Commercial [Member] | Commercial Real Estate - Non-Owner Occupied [Member] | 1-3 [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans and Leases Receivable, Net of Deferred Income   356,263  
Excluding Receivables Acquired With Deteriorated Credit Quality [Member] | Commercial [Member] | Commercial Real Estate - Non-Owner Occupied [Member] | 4 [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans and Leases Receivable, Net of Deferred Income 1,075,433 1,041,515  
Excluding Receivables Acquired With Deteriorated Credit Quality [Member] | Commercial [Member] | Commercial Real Estate - Non-Owner Occupied [Member] | 5 [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans and Leases Receivable, Net of Deferred Income 14,606 22,358  
Excluding Receivables Acquired With Deteriorated Credit Quality [Member] | Commercial [Member] | Commercial Real Estate - Non-Owner Occupied [Member] | 6 [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans and Leases Receivable, Net of Deferred Income 10,223 28,388  
Excluding Receivables Acquired With Deteriorated Credit Quality [Member] | Commercial [Member] | Commercial Real Estate - Non-Owner Occupied [Member] | 7 [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans and Leases Receivable, Net of Deferred Income $ 9,492 $ 31,766  
Excluding Receivables Acquired With Deteriorated Credit Quality [Member] | Commercial [Member] | Commercial Real Estate - Non-Owner Occupied [Member] | 8 [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans and Leases Receivable, Net of Deferred Income  
Excluding Receivables Acquired With Deteriorated Credit Quality [Member] | Commercial [Member] | Raw Land and Lots [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans and Leases Receivable, Net of Deferred Income $ 191,141 $ 203,798  
Excluding Receivables Acquired With Deteriorated Credit Quality [Member] | Commercial [Member] | Raw Land and Lots [Member] | 0-3 [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans and Leases Receivable, Net of Deferred Income 15,728    
Excluding Receivables Acquired With Deteriorated Credit Quality [Member] | Commercial [Member] | Raw Land and Lots [Member] | 1-3 [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans and Leases Receivable, Net of Deferred Income   11,162  
Excluding Receivables Acquired With Deteriorated Credit Quality [Member] | Commercial [Member] | Raw Land and Lots [Member] | 4 [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans and Leases Receivable, Net of Deferred Income 127,427 128,281  
Excluding Receivables Acquired With Deteriorated Credit Quality [Member] | Commercial [Member] | Raw Land and Lots [Member] | 5 [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans and Leases Receivable, Net of Deferred Income 7,526 16,803  
Excluding Receivables Acquired With Deteriorated Credit Quality [Member] | Commercial [Member] | Raw Land and Lots [Member] | 6 [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans and Leases Receivable, Net of Deferred Income 15,689 4,783  
Excluding Receivables Acquired With Deteriorated Credit Quality [Member] | Commercial [Member] | Raw Land and Lots [Member] | 7 [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans and Leases Receivable, Net of Deferred Income $ 24,771 $ 42,769  
Excluding Receivables Acquired With Deteriorated Credit Quality [Member] | Commercial [Member] | Raw Land and Lots [Member] | 8 [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans and Leases Receivable, Net of Deferred Income  
Excluding Receivables Acquired With Deteriorated Credit Quality [Member] | Commercial [Member] | Single Family Investment Real Estate [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans and Leases Receivable, Net of Deferred Income $ 415,118 $ 395,615  
Excluding Receivables Acquired With Deteriorated Credit Quality [Member] | Commercial [Member] | Single Family Investment Real Estate [Member] | 0-3 [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans and Leases Receivable, Net of Deferred Income 55,812    
Excluding Receivables Acquired With Deteriorated Credit Quality [Member] | Commercial [Member] | Single Family Investment Real Estate [Member] | 1-3 [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans and Leases Receivable, Net of Deferred Income   59,638  
Excluding Receivables Acquired With Deteriorated Credit Quality [Member] | Commercial [Member] | Single Family Investment Real Estate [Member] | 4 [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans and Leases Receivable, Net of Deferred Income 340,708 311,900  
Excluding Receivables Acquired With Deteriorated Credit Quality [Member] | Commercial [Member] | Single Family Investment Real Estate [Member] | 5 [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans and Leases Receivable, Net of Deferred Income 7,061 9,750  
Excluding Receivables Acquired With Deteriorated Credit Quality [Member] | Commercial [Member] | Single Family Investment Real Estate [Member] | 6 [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans and Leases Receivable, Net of Deferred Income 7,362 6,680  
Excluding Receivables Acquired With Deteriorated Credit Quality [Member] | Commercial [Member] | Single Family Investment Real Estate [Member] | 7 [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans and Leases Receivable, Net of Deferred Income $ 4,175 $ 7,647  
Excluding Receivables Acquired With Deteriorated Credit Quality [Member] | Commercial [Member] | Single Family Investment Real Estate [Member] | 8 [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans and Leases Receivable, Net of Deferred Income  
Excluding Receivables Acquired With Deteriorated Credit Quality [Member] | Commercial [Member] | Commercial and Industrial [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans and Leases Receivable, Net of Deferred Income $ 465,762 $ 389,921  
Excluding Receivables Acquired With Deteriorated Credit Quality [Member] | Commercial [Member] | Commercial and Industrial [Member] | 0-3 [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans and Leases Receivable, Net of Deferred Income 180,478    
Excluding Receivables Acquired With Deteriorated Credit Quality [Member] | Commercial [Member] | Commercial and Industrial [Member] | 1-3 [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans and Leases Receivable, Net of Deferred Income   138,973  
Excluding Receivables Acquired With Deteriorated Credit Quality [Member] | Commercial [Member] | Commercial and Industrial [Member] | 4 [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans and Leases Receivable, Net of Deferred Income 262,377 230,084  
Excluding Receivables Acquired With Deteriorated Credit Quality [Member] | Commercial [Member] | Commercial and Industrial [Member] | 5 [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans and Leases Receivable, Net of Deferred Income 13,943 9,392  
Excluding Receivables Acquired With Deteriorated Credit Quality [Member] | Commercial [Member] | Commercial and Industrial [Member] | 6 [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans and Leases Receivable, Net of Deferred Income 5,435 4,383  
Excluding Receivables Acquired With Deteriorated Credit Quality [Member] | Commercial [Member] | Commercial and Industrial [Member] | 7 [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans and Leases Receivable, Net of Deferred Income 3,430 $ 7,089  
Excluding Receivables Acquired With Deteriorated Credit Quality [Member] | Commercial [Member] | Commercial and Industrial [Member] | 8 [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans and Leases Receivable, Net of Deferred Income 99  
Excluding Receivables Acquired With Deteriorated Credit Quality [Member] | Commercial [Member] | Other Commercial [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans and Leases Receivable, Net of Deferred Income 91,148 $ 78,850  
Excluding Receivables Acquired With Deteriorated Credit Quality [Member] | Commercial [Member] | Other Commercial [Member] | 0-3 [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans and Leases Receivable, Net of Deferred Income 44,403    
Excluding Receivables Acquired With Deteriorated Credit Quality [Member] | Commercial [Member] | Other Commercial [Member] | 1-3 [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans and Leases Receivable, Net of Deferred Income   31,571  
Excluding Receivables Acquired With Deteriorated Credit Quality [Member] | Commercial [Member] | Other Commercial [Member] | 4 [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans and Leases Receivable, Net of Deferred Income 42,738 40,913  
Excluding Receivables Acquired With Deteriorated Credit Quality [Member] | Commercial [Member] | Other Commercial [Member] | 5 [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans and Leases Receivable, Net of Deferred Income 2,923 3,818  
Excluding Receivables Acquired With Deteriorated Credit Quality [Member] | Commercial [Member] | Other Commercial [Member] | 6 [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans and Leases Receivable, Net of Deferred Income 432 844  
Excluding Receivables Acquired With Deteriorated Credit Quality [Member] | Commercial [Member] | Other Commercial [Member] | 7 [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans and Leases Receivable, Net of Deferred Income $ 652 $ 1,704  
Excluding Receivables Acquired With Deteriorated Credit Quality [Member] | Commercial [Member] | Other Commercial [Member] | 8 [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans and Leases Receivable, Net of Deferred Income