Quarterly report pursuant to Section 13 or 15(d)

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

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LOANS AND ALLOWANCE FOR LOAN LOSSES (Loans Receivables Related Risk Rating Excluding Purchased Impaired Loans) (Details) - USD ($)
$ in Thousands
Jun. 30, 2016
Dec. 31, 2015
Jun. 30, 2015
Financing Receivable, Recorded Investment [Line Items]      
Total Loans $ 5,941,098 $ 5,671,462 $ 5,510,385
Construction and Land Development [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Total Loans 765,997 749,720 671,234
Commercial Real Estate - Owner Occupied [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Total Loans 831,880 860,086 874,582
Commercial Real Estate - Non-Owner Occupied [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Total Loans 1,370,745 1,270,480 1,217,646
Multifamily Real Estate [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Total Loans 337,723 322,528 316,474
Commercial & Industrial [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Total Loans 469,054 435,365 426,193
Residential 1-4 Family [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Total Loans 992,457 978,469 991,592
Auto [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Total Loans 244,575 234,061 216,420
HELOC [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Total Loans 519,196 516,726 512,123
Consumer and all other [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Total Loans 409,471 304,027 $ 284,121
Excluding Purchased Impaired [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Total Loans 5,873,928 5,597,725  
Excluding Purchased Impaired [Member] | Pass [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Total Loans 5,658,622 5,372,500  
Excluding Purchased Impaired [Member] | Special Mention [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Total Loans 157,996 161,222  
Excluding Purchased Impaired [Member] | Substandard [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Total Loans 54,065 58,872  
Excluding Purchased Impaired [Member] | Doubtful [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Total Loans 3,245 5,131  
Excluding Purchased Impaired [Member] | Construction and Land Development [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Total Loans 760,984 743,734  
Excluding Purchased Impaired [Member] | Construction and Land Development [Member] | Pass [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Total Loans 684,002 663,067  
Excluding Purchased Impaired [Member] | Construction and Land Development [Member] | Special Mention [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Total Loans 47,592 52,650  
Excluding Purchased Impaired [Member] | Construction and Land Development [Member] | Substandard [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Total Loans 29,274 27,980  
Excluding Purchased Impaired [Member] | Construction and Land Development [Member] | Doubtful [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Total Loans 116 37  
Excluding Purchased Impaired [Member] | Commercial Real Estate - Owner Occupied [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Total Loans 811,188 832,698  
Excluding Purchased Impaired [Member] | Commercial Real Estate - Owner Occupied [Member] | Pass [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Total Loans 779,574 800,979  
Excluding Purchased Impaired [Member] | Commercial Real Estate - Owner Occupied [Member] | Special Mention [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Total Loans 25,352 20,856  
Excluding Purchased Impaired [Member] | Commercial Real Estate - Owner Occupied [Member] | Substandard [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Total Loans 6,262 8,931  
Excluding Purchased Impaired [Member] | Commercial Real Estate - Owner Occupied [Member] | Doubtful [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Total Loans 0 1,932  
Excluding Purchased Impaired [Member] | Commercial Real Estate - Non-Owner Occupied [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Total Loans 1,352,448 1,256,961  
Excluding Purchased Impaired [Member] | Commercial Real Estate - Non-Owner Occupied [Member] | Pass [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Total Loans 1,317,192 1,228,956  
Excluding Purchased Impaired [Member] | Commercial Real Estate - Non-Owner Occupied [Member] | Special Mention [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Total Loans 30,997 22,341  
Excluding Purchased Impaired [Member] | Commercial Real Estate - Non-Owner Occupied [Member] | Substandard [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Total Loans 4,259 5,664  
Excluding Purchased Impaired [Member] | Commercial Real Estate - Non-Owner Occupied [Member] | Doubtful [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Total Loans 0 0  
Excluding Purchased Impaired [Member] | Multifamily Real Estate [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Total Loans 335,631 320,973  
Excluding Purchased Impaired [Member] | Multifamily Real Estate [Member] | Pass [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Total Loans 324,718 315,128  
Excluding Purchased Impaired [Member] | Multifamily Real Estate [Member] | Special Mention [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Total Loans 7,136 2,017  
Excluding Purchased Impaired [Member] | Multifamily Real Estate [Member] | Substandard [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Total Loans 3,777 3,828  
Excluding Purchased Impaired [Member] | Multifamily Real Estate [Member] | Doubtful [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Total Loans 0 0  
Excluding Purchased Impaired [Member] | Commercial & Industrial [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Total Loans 467,700 433,552  
Excluding Purchased Impaired [Member] | Commercial & Industrial [Member] | Pass [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Total Loans 449,708 414,333  
Excluding Purchased Impaired [Member] | Commercial & Industrial [Member] | Special Mention [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Total Loans 15,953 16,724  
Excluding Purchased Impaired [Member] | Commercial & Industrial [Member] | Substandard [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Total Loans 2,039 2,396  
Excluding Purchased Impaired [Member] | Commercial & Industrial [Member] | Doubtful [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Total Loans 0 99  
Excluding Purchased Impaired [Member] | Residential 1-4 Family [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Total Loans 974,652 957,310  
Excluding Purchased Impaired [Member] | Residential 1-4 Family [Member] | Pass [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Total Loans 943,154 912,839  
Excluding Purchased Impaired [Member] | Residential 1-4 Family [Member] | Special Mention [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Total Loans 22,467 34,728  
Excluding Purchased Impaired [Member] | Residential 1-4 Family [Member] | Substandard [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Total Loans 6,876 8,037  
Excluding Purchased Impaired [Member] | Residential 1-4 Family [Member] | Doubtful [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Total Loans 2,155 1,706  
Excluding Purchased Impaired [Member] | Auto [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Total Loans 244,575 234,061  
Excluding Purchased Impaired [Member] | Auto [Member] | Pass [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Total Loans 242,596 230,670  
Excluding Purchased Impaired [Member] | Auto [Member] | Special Mention [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Total Loans 1,698 3,109  
Excluding Purchased Impaired [Member] | Auto [Member] | Substandard [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Total Loans 103 194  
Excluding Purchased Impaired [Member] | Auto [Member] | Doubtful [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Total Loans 178 88  
Excluding Purchased Impaired [Member] | HELOC [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Total Loans 517,679 514,935  
Excluding Purchased Impaired [Member] | HELOC [Member] | Pass [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Total Loans 511,936 507,514  
Excluding Purchased Impaired [Member] | HELOC [Member] | Special Mention [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Total Loans 3,718 4,801  
Excluding Purchased Impaired [Member] | HELOC [Member] | Substandard [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Total Loans 1,438 1,611  
Excluding Purchased Impaired [Member] | HELOC [Member] | Doubtful [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Total Loans 587 1,009  
Excluding Purchased Impaired [Member] | Consumer and all other [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Total Loans 409,071 303,501  
Excluding Purchased Impaired [Member] | Consumer and all other [Member] | Pass [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Total Loans 405,742 299,014  
Excluding Purchased Impaired [Member] | Consumer and all other [Member] | Special Mention [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Total Loans 3,083 3,996  
Excluding Purchased Impaired [Member] | Consumer and all other [Member] | Substandard [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Total Loans 37 231  
Excluding Purchased Impaired [Member] | Consumer and all other [Member] | Doubtful [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Total Loans $ 209 $ 260