Quarterly report pursuant to Section 13 or 15(d)

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

v3.8.0.1
LOANS AND ALLOWANCE FOR LOAN LOSSES (Narrative) (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2018
Mar. 31, 2017
Dec. 31, 2017
Financing Receivable, Modifications [Line Items]      
Period for restructured loan to be considered default 90 days    
Provision for unfunded commitments   $ 112  
Total loans held for investment, net $ 9,805,723 6,554,046 $ 7,141,552
Acquired Performing Loan Portfolio      
Financing Receivable, Modifications [Line Items]      
Total loans held for investment, net 2,900,000   892,400
Remaining discount on acquired loans 44,800   13,700
Purchased Impaired      
Financing Receivable, Modifications [Line Items]      
Total loans held for investment, net 102,861 $ 57,770 39,021
Purchased impaired loans (gross) $ 124,500   $ 47,900