Annual report pursuant to Section 13 and 15(d)

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

v3.8.0.1
LOANS AND ALLOWANCE FOR LOAN LOSSES (Summary of Aging of the Loan Portfolio by Segment) (Details) - USD ($)
$ in Thousands
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Greater Than 90 Days and Still Accruing $ 3,532 $ 3,005  
Total Loans 7,141,552 6,307,060 $ 5,671,462
Nonaccrual 21,743 9,973 11,900
Current 7,053,016 6,209,924  
30 to 59 Days Past Due      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Past Due 16,873 20,245  
60 to 89 Days Past Due      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Past Due 7,367 4,621  
Purchased Impaired      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Total Loans 39,021 59,292 73,737
Current 35,418 55,244  
Construction and Land Development      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Greater Than 90 Days and Still Accruing 1,340 76  
Total Loans 948,791 751,131 749,720
Nonaccrual 5,610 2,037  
Current 936,857 744,702  
Construction and Land Development | 30 to 59 Days Past Due      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Past Due 1,248 1,162  
Construction and Land Development | 60 to 89 Days Past Due      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Past Due 898 232  
Construction and Land Development | Purchased Impaired      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Total Loans 2,838 2,922 5,986
Current 2,773 2,838  
Commercial Real Estate - Owner Occupied      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Greater Than 90 Days and Still Accruing 0 35  
Total Loans 943,933 857,805 860,086
Nonaccrual 2,708 794  
Current 925,910 836,682  
Commercial Real Estate - Owner Occupied | 30 to 59 Days Past Due      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Past Due 444 1,842  
Commercial Real Estate - Owner Occupied | 60 to 89 Days Past Due      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Past Due 81 109  
Commercial Real Estate - Owner Occupied | Purchased Impaired      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Total Loans 14,790 18,343 27,388
Current 13,931 17,553  
Commercial Real Estate - Non-Owner Occupied      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Greater Than 90 Days and Still Accruing 194 0  
Total Loans 1,713,659 1,564,295 1,270,480
Nonaccrual 2,992 0  
Current 1,703,592 1,544,623  
Commercial Real Estate - Non-Owner Occupied | 30 to 59 Days Past Due      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Past Due 187 2,369  
Commercial Real Estate - Non-Owner Occupied | 60 to 89 Days Past Due      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Past Due 84 0  
Commercial Real Estate - Non-Owner Occupied | Purchased Impaired      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Total Loans 6,610 17,303 13,519
Current 6,189 16,768  
Multifamily Real Estate      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Greater Than 90 Days and Still Accruing 0 0  
Total Loans 357,079 334,276 322,528
Nonaccrual 0 0  
Current 356,999 332,063  
Multifamily Real Estate | 30 to 59 Days Past Due      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Past Due 0 147  
Multifamily Real Estate | 60 to 89 Days Past Due      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Past Due 0 0  
Multifamily Real Estate | Purchased Impaired      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Total Loans 80 2,066 1,555
Current 80 2,066  
Commercial and Industrial      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Greater Than 90 Days and Still Accruing 214 9  
Total Loans 612,023 551,526 435,365
Nonaccrual 316 124  
Current 609,829 548,702  
Commercial and Industrial | 30 to 59 Days Past Due      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Past Due 1,147 759  
Commercial and Industrial | 60 to 89 Days Past Due      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Past Due 109 858  
Commercial and Industrial | Purchased Impaired      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Total Loans 408 1,074 1,813
Current 408 974  
Residential 1-4 Family - Commercial      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Greater Than 90 Days and Still Accruing 579 600  
Total Loans 612,395 551,636 517,063
Nonaccrual 1,085 1,071  
Current 598,935 535,874  
Residential 1-4 Family - Commercial | 30 to 59 Days Past Due      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Past Due 1,682 1,722  
Residential 1-4 Family - Commercial | 60 to 89 Days Past Due      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Past Due 700 147  
Residential 1-4 Family - Commercial | Purchased Impaired      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Total Loans 9,414 12,222 16,119
Current 8,630 11,165  
Residential 1-4 Family - Mortgage      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Greater Than 90 Days and Still Accruing 546 1,448  
Total Loans 485,690 477,911 461,406
Nonaccrual 6,269 4,208  
Current 468,763 462,574  
Residential 1-4 Family - Mortgage | 30 to 59 Days Past Due      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Past Due 3,838 5,316  
Residential 1-4 Family - Mortgage | 60 to 89 Days Past Due      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Past Due 2,541 387  
Residential 1-4 Family - Mortgage | Purchased Impaired      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Total Loans 3,733 3,978 5,040
Current 2,764 2,792  
Auto      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Greater Than 90 Days and Still Accruing 40 111  
Total Loans 282,474 262,071 234,061
Nonaccrual 413 169  
Current 278,295 258,904  
Auto | 30 to 59 Days Past Due      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Past Due 3,541 2,570  
Auto | 60 to 89 Days Past Due      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Past Due 185 317  
Auto | Purchased Impaired      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Total Loans 0 0 0
HELOC      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Greater Than 90 Days and Still Accruing 217 635  
Total Loans 537,521 526,884 516,726
Nonaccrual 2,075 1,279  
Current 531,180 520,833  
HELOC | 30 to 59 Days Past Due      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Past Due 2,382 1,836  
HELOC | 60 to 89 Days Past Due      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Past Due 717 1,140  
HELOC | Purchased Impaired      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Total Loans 950 1,161 1,791
Current 445 865  
Consumer and all other      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Greater Than 90 Days and Still Accruing 402 91  
Total Loans 647,987 429,525 304,027
Nonaccrual 275 291  
Current 642,656 424,967  
Consumer and all other | 30 to 59 Days Past Due      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Past Due 2,404 2,522  
Consumer and all other | 60 to 89 Days Past Due      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Past Due 2,052 1,431  
Consumer and all other | Purchased Impaired      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Total Loans 198 223 $ 526
Current $ 198 $ 223