Quarterly report pursuant to Section 13 or 15(d)

LOANS AND ALLOWANCE FOR LOAN LOSSES (Narrative) (Details)

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LOANS AND ALLOWANCE FOR LOAN LOSSES (Narrative) (Details)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2017
USD ($)
loan
Jun. 30, 2017
USD ($)
loan
Jun. 30, 2016
USD ($)
Dec. 31, 2016
USD ($)
Financing Receivable, Modifications [Line Items]        
Period for restructured loan to be considered default   90 days    
Number of restructured TDR loans | loan 5 5    
Restructured TDR loans that defaulted, amount $ 1,100 $ 1,100    
Provision for unfunded commitments     $ 100  
Total loans held for investment, net 6,771,490 6,771,490 5,941,098 $ 6,307,060
Acquired Performing Loan Portfolio        
Financing Receivable, Modifications [Line Items]        
Total loans held for investment, net 996,800 996,800   1,100,000
Remaining discount on acquired loans 15,400 15,400   16,900
Purchased Impaired        
Financing Receivable, Modifications [Line Items]        
Total loans held for investment, net 56,167 56,167 $ 67,170 59,292
Purchased impaired loans (gross) $ 68,900 $ 68,900   $ 73,600