Quarterly report pursuant to Section 13 or 15(d)

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

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LOANS AND ALLOWANCE FOR LOAN LOSSES (Summary of Aging of the Loan Portfolio by Segment) (Details) - USD ($)
$ in Thousands
Jun. 30, 2017
Dec. 31, 2016
Jun. 30, 2016
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Greater than 90 Days and still Accruing $ 3,625 $ 3,005  
Total Loans 6,771,490 6,307,060 $ 5,941,098
Nonaccrual 24,574 9,973  
Current 6,663,344 6,209,924  
Purchased Impaired      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Total Loans 56,167 59,292 67,170
Current 51,307 55,244  
30 to 59 Days Past Due      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Past Due 14,767 20,245  
60 to 89 Days Past Due      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Past Due 9,013 4,621  
Construction and Land Development      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Greater than 90 Days and still Accruing 83 76  
Total Loans 799,938 751,131 765,997
Nonaccrual 5,659 2,037  
Current 790,874 744,702  
Construction and Land Development | Purchased Impaired      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Total Loans 2,694 2,922 5,013
Current 2,627 2,838  
Construction and Land Development | 30 to 59 Days Past Due      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Past Due 602 1,162  
Construction and Land Development | 60 to 89 Days Past Due      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Past Due 26 232  
Commercial Real Estate - Owner Occupied      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Greater than 90 Days and still Accruing 56 35  
Total Loans 888,285 857,805 831,880
Nonaccrual 1,279 794  
Current 865,702 836,682  
Commercial Real Estate - Owner Occupied | Purchased Impaired      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Total Loans 17,906 18,343 20,692
Current 16,917 17,553  
Commercial Real Estate - Owner Occupied | 30 to 59 Days Past Due      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Past Due 3,148 1,842  
Commercial Real Estate - Owner Occupied | 60 to 89 Days Past Due      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Past Due 194 109  
Commercial Real Estate - Non-Owner Occupied      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Greater than 90 Days and still Accruing 298 0  
Total Loans 1,698,329 1,564,295 1,370,745
Nonaccrual 4,765 0  
Current 1,674,857 1,544,623  
Commercial Real Estate - Non-Owner Occupied | Purchased Impaired      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Total Loans 16,308 17,303 18,297
Current 15,037 16,768  
Commercial Real Estate - Non-Owner Occupied | 30 to 59 Days Past Due      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Past Due 1,530 2,369  
Commercial Real Estate - Non-Owner Occupied | 60 to 89 Days Past Due      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Past Due 571 0  
Multifamily Real Estate      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Greater than 90 Days and still Accruing 0 0  
Total Loans 367,257 334,276 337,723
Nonaccrual 0 0  
Current 364,710 332,063  
Multifamily Real Estate | Purchased Impaired      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Total Loans 2,047 2,066 2,092
Current 2,047 2,066  
Multifamily Real Estate | 30 to 59 Days Past Due      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Past Due 500 147  
Multifamily Real Estate | 60 to 89 Days Past Due      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Past Due 0 0  
Commercial & Industrial      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Greater than 90 Days and still Accruing 55 9  
Total Loans 568,602 551,526 469,054
Nonaccrual 4,281 124  
Current 561,750 548,702  
Commercial & Industrial | Purchased Impaired      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Total Loans 751 1,074 1,354
Current 642 974  
Commercial & Industrial | 30 to 59 Days Past Due      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Past Due 1,652 759  
Commercial & Industrial | 60 to 89 Days Past Due      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Past Due 113 858  
Residential 1-4 Family      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Greater than 90 Days and still Accruing 2,369 2,048  
Total Loans 1,066,519 1,029,547 992,457
Nonaccrual 6,128 5,279  
Current 1,034,795 998,448  
Residential 1-4 Family | Purchased Impaired      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Total Loans 15,087 16,200 17,805
Current 13,046 13,957  
Residential 1-4 Family | 30 to 59 Days Past Due      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Past Due 2,477 7,038  
Residential 1-4 Family | 60 to 89 Days Past Due      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Past Due 5,663 534  
Auto      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Greater than 90 Days and still Accruing 35 111  
Total Loans 274,162 262,071 244,575
Nonaccrual 270 169  
Current 272,055 258,904  
Auto | Purchased Impaired      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Total Loans 0 0 0
Auto | 30 to 59 Days Past Due      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Past Due 1,562 2,570  
Auto | 60 to 89 Days Past Due      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Past Due 240 317  
HELOC      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Greater than 90 Days and still Accruing 544 635  
Total Loans 535,088 526,884 519,196
Nonaccrual 2,059 1,279  
Current 528,960 520,833  
HELOC | Purchased Impaired      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Total Loans 1,156 1,161 1,517
Current 808 865  
HELOC | 30 to 59 Days Past Due      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Past Due 1,405 1,836  
HELOC | 60 to 89 Days Past Due      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Past Due 964 1,140  
Consumer and all other      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Greater than 90 Days and still Accruing 185 91  
Total Loans 573,310 429,525 409,471
Nonaccrual 133 291  
Current 569,641 424,967  
Consumer and all other | Purchased Impaired      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Total Loans 218 223 $ 400
Current 183 223  
Consumer and all other | 30 to 59 Days Past Due      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Past Due 1,891 2,522  
Consumer and all other | 60 to 89 Days Past Due      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Past Due $ 1,242 $ 1,431