LOANS AND ALLOWANCE FOR LOAN LOSSES (Loans Receivables Related Risk Rating Excluding Purchased Impaired Loans) (Details) - USD ($) $ in Thousands | Jun. 30, 2015 | Dec. 31, 2014 | Jun. 30, 2014 |
Financing Receivable, Recorded Investment [Line Items] | | | |
Loans receivables related risk rating | $ 5,510,385 | $ 5,345,996 | $ 5,233,069 |
Commercial Construction [Member] | | | |
Financing Receivable, Recorded Investment [Line Items] | | | |
Loans receivables related risk rating | 378,204 | 341,280 | |
Commercial Real Estate - Owner Occupied [Member] | | | |
Financing Receivable, Recorded Investment [Line Items] | | | |
Loans receivables related risk rating | 874,582 | 875,443 | |
Commercial Real Estate - Non-Owner Occupied [Member] | | | |
Financing Receivable, Recorded Investment [Line Items] | | | |
Loans receivables related risk rating | 1,569,306 | 1,509,159 | |
Raw Land and Lots [Member] | | | |
Financing Receivable, Recorded Investment [Line Items] | | | |
Loans receivables related risk rating | 201,630 | 211,225 | |
Single Family Investment Real Estate [Member] | | | |
Financing Receivable, Recorded Investment [Line Items] | | | |
Loans receivables related risk rating | 435,068 | 412,494 | |
Commercial and Industrial [Member] | | | |
Financing Receivable, Recorded Investment [Line Items] | | | |
Loans receivables related risk rating | 450,682 | 393,776 | |
Other Commercial [Member] | | | |
Financing Receivable, Recorded Investment [Line Items] | | | |
Loans receivables related risk rating | 90,556 | 81,106 | |
Excluding Purchased Impaired [Member] | | | |
Financing Receivable, Recorded Investment [Line Items] | | | |
Loans receivables related risk rating | 3,922,509 | 3,730,248 | |
Excluding Purchased Impaired [Member] | Commercial Construction [Member] | | | |
Financing Receivable, Recorded Investment [Line Items] | | | |
Loans receivables related risk rating | 375,283 | 337,498 | |
Excluding Purchased Impaired [Member] | Commercial Real Estate - Owner Occupied [Member] | | | |
Financing Receivable, Recorded Investment [Line Items] | | | |
Loans receivables related risk rating | 844,744 | 844,276 | |
Excluding Purchased Impaired [Member] | Commercial Real Estate - Non-Owner Occupied [Member] | | | |
Financing Receivable, Recorded Investment [Line Items] | | | |
Loans receivables related risk rating | 1,549,290 | 1,480,290 | |
Excluding Purchased Impaired [Member] | Raw Land and Lots [Member] | | | |
Financing Receivable, Recorded Investment [Line Items] | | | |
Loans receivables related risk rating | 196,527 | 203,798 | |
Excluding Purchased Impaired [Member] | Single Family Investment Real Estate [Member] | | | |
Financing Receivable, Recorded Investment [Line Items] | | | |
Loans receivables related risk rating | 419,564 | 395,615 | |
Excluding Purchased Impaired [Member] | Commercial and Industrial [Member] | | | |
Financing Receivable, Recorded Investment [Line Items] | | | |
Loans receivables related risk rating | 447,657 | 389,921 | |
Excluding Purchased Impaired [Member] | Other Commercial [Member] | | | |
Financing Receivable, Recorded Investment [Line Items] | | | |
Loans receivables related risk rating | 89,444 | 78,850 | |
Excluding Purchased Impaired [Member] | 1-3 [Member] | | | |
Financing Receivable, Recorded Investment [Line Items] | | | |
Loans receivables related risk rating | 944,887 | 805,908 | |
Excluding Purchased Impaired [Member] | 1-3 [Member] | Commercial Construction [Member] | | | |
Financing Receivable, Recorded Investment [Line Items] | | | |
Loans receivables related risk rating | 34,756 | 22,512 | |
Excluding Purchased Impaired [Member] | 1-3 [Member] | Commercial Real Estate - Owner Occupied [Member] | | | |
Financing Receivable, Recorded Investment [Line Items] | | | |
Loans receivables related risk rating | 183,155 | 185,789 | |
Excluding Purchased Impaired [Member] | 1-3 [Member] | Commercial Real Estate - Non-Owner Occupied [Member] | | | |
Financing Receivable, Recorded Investment [Line Items] | | | |
Loans receivables related risk rating | 407,562 | 356,263 | |
Excluding Purchased Impaired [Member] | 1-3 [Member] | Raw Land and Lots [Member] | | | |
Financing Receivable, Recorded Investment [Line Items] | | | |
Loans receivables related risk rating | 11,696 | 11,162 | |
Excluding Purchased Impaired [Member] | 1-3 [Member] | Single Family Investment Real Estate [Member] | | | |
Financing Receivable, Recorded Investment [Line Items] | | | |
Loans receivables related risk rating | 66,052 | 59,638 | |
Excluding Purchased Impaired [Member] | 1-3 [Member] | Commercial and Industrial [Member] | | | |
Financing Receivable, Recorded Investment [Line Items] | | | |
Loans receivables related risk rating | 195,917 | 138,973 | |
Excluding Purchased Impaired [Member] | 1-3 [Member] | Other Commercial [Member] | | | |
Financing Receivable, Recorded Investment [Line Items] | | | |
Loans receivables related risk rating | 45,749 | 31,571 | |
Excluding Purchased Impaired [Member] | 4 [Member] | | | |
Financing Receivable, Recorded Investment [Line Items] | | | |
Loans receivables related risk rating | 2,757,857 | 2,662,344 | |
Excluding Purchased Impaired [Member] | 4 [Member] | Commercial Construction [Member] | | | |
Financing Receivable, Recorded Investment [Line Items] | | | |
Loans receivables related risk rating | 310,970 | 289,064 | |
Excluding Purchased Impaired [Member] | 4 [Member] | Commercial Real Estate - Owner Occupied [Member] | | | |
Financing Receivable, Recorded Investment [Line Items] | | | |
Loans receivables related risk rating | 629,284 | 620,587 | |
Excluding Purchased Impaired [Member] | 4 [Member] | Commercial Real Estate - Non-Owner Occupied [Member] | | | |
Financing Receivable, Recorded Investment [Line Items] | | | |
Loans receivables related risk rating | 1,081,215 | 1,041,515 | |
Excluding Purchased Impaired [Member] | 4 [Member] | Raw Land and Lots [Member] | | | |
Financing Receivable, Recorded Investment [Line Items] | | | |
Loans receivables related risk rating | 132,386 | 128,281 | |
Excluding Purchased Impaired [Member] | 4 [Member] | Single Family Investment Real Estate [Member] | | | |
Financing Receivable, Recorded Investment [Line Items] | | | |
Loans receivables related risk rating | 333,533 | 311,900 | |
Excluding Purchased Impaired [Member] | 4 [Member] | Commercial and Industrial [Member] | | | |
Financing Receivable, Recorded Investment [Line Items] | | | |
Loans receivables related risk rating | 231,994 | 230,084 | |
Excluding Purchased Impaired [Member] | 4 [Member] | Other Commercial [Member] | | | |
Financing Receivable, Recorded Investment [Line Items] | | | |
Loans receivables related risk rating | 38,475 | 40,913 | |
Excluding Purchased Impaired [Member] | 5 [Member] | | | |
Financing Receivable, Recorded Investment [Line Items] | | | |
Loans receivables related risk rating | 86,878 | 89,056 | |
Excluding Purchased Impaired [Member] | 5 [Member] | Commercial Construction [Member] | | | |
Financing Receivable, Recorded Investment [Line Items] | | | |
Loans receivables related risk rating | 17,583 | 11,932 | |
Excluding Purchased Impaired [Member] | 5 [Member] | Commercial Real Estate - Owner Occupied [Member] | | | |
Financing Receivable, Recorded Investment [Line Items] | | | |
Loans receivables related risk rating | 14,460 | 15,003 | |
Excluding Purchased Impaired [Member] | 5 [Member] | Commercial Real Estate - Non-Owner Occupied [Member] | | | |
Financing Receivable, Recorded Investment [Line Items] | | | |
Loans receivables related risk rating | 22,487 | 22,358 | |
Excluding Purchased Impaired [Member] | 5 [Member] | Raw Land and Lots [Member] | | | |
Financing Receivable, Recorded Investment [Line Items] | | | |
Loans receivables related risk rating | 9,814 | 16,803 | |
Excluding Purchased Impaired [Member] | 5 [Member] | Single Family Investment Real Estate [Member] | | | |
Financing Receivable, Recorded Investment [Line Items] | | | |
Loans receivables related risk rating | 8,794 | 9,750 | |
Excluding Purchased Impaired [Member] | 5 [Member] | Commercial and Industrial [Member] | | | |
Financing Receivable, Recorded Investment [Line Items] | | | |
Loans receivables related risk rating | 10,823 | 9,392 | |
Excluding Purchased Impaired [Member] | 5 [Member] | Other Commercial [Member] | | | |
Financing Receivable, Recorded Investment [Line Items] | | | |
Loans receivables related risk rating | 2,917 | 3,818 | |
Excluding Purchased Impaired [Member] | 6 [Member] | | | |
Financing Receivable, Recorded Investment [Line Items] | | | |
Loans receivables related risk rating | 68,116 | 63,672 | |
Excluding Purchased Impaired [Member] | 6 [Member] | Commercial Construction [Member] | | | |
Financing Receivable, Recorded Investment [Line Items] | | | |
Loans receivables related risk rating | 9,343 | 10,906 | |
Excluding Purchased Impaired [Member] | 6 [Member] | Commercial Real Estate - Owner Occupied [Member] | | | |
Financing Receivable, Recorded Investment [Line Items] | | | |
Loans receivables related risk rating | 6,471 | 7,688 | |
Excluding Purchased Impaired [Member] | 6 [Member] | Commercial Real Estate - Non-Owner Occupied [Member] | | | |
Financing Receivable, Recorded Investment [Line Items] | | | |
Loans receivables related risk rating | 24,523 | 28,388 | |
Excluding Purchased Impaired [Member] | 6 [Member] | Raw Land and Lots [Member] | | | |
Financing Receivable, Recorded Investment [Line Items] | | | |
Loans receivables related risk rating | 16,359 | 4,783 | |
Excluding Purchased Impaired [Member] | 6 [Member] | Single Family Investment Real Estate [Member] | | | |
Financing Receivable, Recorded Investment [Line Items] | | | |
Loans receivables related risk rating | 6,190 | 6,680 | |
Excluding Purchased Impaired [Member] | 6 [Member] | Commercial and Industrial [Member] | | | |
Financing Receivable, Recorded Investment [Line Items] | | | |
Loans receivables related risk rating | 4,319 | 4,383 | |
Excluding Purchased Impaired [Member] | 6 [Member] | Other Commercial [Member] | | | |
Financing Receivable, Recorded Investment [Line Items] | | | |
Loans receivables related risk rating | 911 | 844 | |
Excluding Purchased Impaired [Member] | 7 [Member] | | | |
Financing Receivable, Recorded Investment [Line Items] | | | |
Loans receivables related risk rating | 63,189 | 109,268 | |
Excluding Purchased Impaired [Member] | 7 [Member] | Commercial Construction [Member] | | | |
Financing Receivable, Recorded Investment [Line Items] | | | |
Loans receivables related risk rating | 2,631 | 3,084 | |
Excluding Purchased Impaired [Member] | 7 [Member] | Commercial Real Estate - Owner Occupied [Member] | | | |
Financing Receivable, Recorded Investment [Line Items] | | | |
Loans receivables related risk rating | 9,792 | 15,209 | |
Excluding Purchased Impaired [Member] | 7 [Member] | Commercial Real Estate - Non-Owner Occupied [Member] | | | |
Financing Receivable, Recorded Investment [Line Items] | | | |
Loans receivables related risk rating | 13,503 | 31,766 | |
Excluding Purchased Impaired [Member] | 7 [Member] | Raw Land and Lots [Member] | | | |
Financing Receivable, Recorded Investment [Line Items] | | | |
Loans receivables related risk rating | 26,272 | 42,769 | |
Excluding Purchased Impaired [Member] | 7 [Member] | Single Family Investment Real Estate [Member] | | | |
Financing Receivable, Recorded Investment [Line Items] | | | |
Loans receivables related risk rating | 4,995 | 7,647 | |
Excluding Purchased Impaired [Member] | 7 [Member] | Commercial and Industrial [Member] | | | |
Financing Receivable, Recorded Investment [Line Items] | | | |
Loans receivables related risk rating | 4,604 | 7,089 | |
Excluding Purchased Impaired [Member] | 7 [Member] | Other Commercial [Member] | | | |
Financing Receivable, Recorded Investment [Line Items] | | | |
Loans receivables related risk rating | 1,392 | $ 1,704 | |
Excluding Purchased Impaired [Member] | 8 [Member] | | | |
Financing Receivable, Recorded Investment [Line Items] | | | |
Loans receivables related risk rating | $ 1,582 | | |
Excluding Purchased Impaired [Member] | 8 [Member] | Commercial Construction [Member] | | | |
Financing Receivable, Recorded Investment [Line Items] | | | |
Loans receivables related risk rating | | | |
Excluding Purchased Impaired [Member] | 8 [Member] | Commercial Real Estate - Owner Occupied [Member] | | | |
Financing Receivable, Recorded Investment [Line Items] | | | |
Loans receivables related risk rating | $ 1,582 | | |
Excluding Purchased Impaired [Member] | 8 [Member] | Commercial Real Estate - Non-Owner Occupied [Member] | | | |
Financing Receivable, Recorded Investment [Line Items] | | | |
Loans receivables related risk rating | | | |
Excluding Purchased Impaired [Member] | 8 [Member] | Raw Land and Lots [Member] | | | |
Financing Receivable, Recorded Investment [Line Items] | | | |
Loans receivables related risk rating | | | |
Excluding Purchased Impaired [Member] | 8 [Member] | Single Family Investment Real Estate [Member] | | | |
Financing Receivable, Recorded Investment [Line Items] | | | |
Loans receivables related risk rating | | | |
Excluding Purchased Impaired [Member] | 8 [Member] | Commercial and Industrial [Member] | | | |
Financing Receivable, Recorded Investment [Line Items] | | | |
Loans receivables related risk rating | | | |
Excluding Purchased Impaired [Member] | 8 [Member] | Other Commercial [Member] | | | |
Financing Receivable, Recorded Investment [Line Items] | | | |
Loans receivables related risk rating | | | |