LOANS AND ALLOWANCE FOR LOAN LOSSES (Details 7) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	$ 5,269,953	$ 3,077,656
Non-PCI Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	19,979	15,553
Related Allowance	450	487
Unpaid Principal Balance	25,730	15,734
Non-PCI Loans | Recorded Investment With a Recorded Allowance
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	5,053	3,278
Non-PCI Loans | Recorded Investment With no Recorded Allowance
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	14,926	12,275
Non-PCI Loans | Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	14,847	8,449
Related Allowance	390	314
Unpaid Principal Balance	16,417	8,515
Non-PCI Loans | Commercial real estate | Recorded Investment With a Recorded Allowance
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	3,680	1,262
Non-PCI Loans | Commercial real estate | Recorded Investment With no Recorded Allowance
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	11,167	7,187
Non-PCI Loans | Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	3,253	2,623
Related Allowance	0	106
Unpaid Principal Balance	7,434	2,695
Non-PCI Loans | Commercial and industrial | Recorded Investment With a Recorded Allowance
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	380	531
Non-PCI Loans | Commercial and industrial | Recorded Investment With no Recorded Allowance
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	2,873	2,092
Non-PCI Loans | Construction and development
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	886	177
Related Allowance	0	0
Unpaid Principal Balance	886	180
Non-PCI Loans | Construction and development | Recorded Investment With a Recorded Allowance
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Non-PCI Loans | Construction and development | Recorded Investment With no Recorded Allowance
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	886	177
Non-PCI Loans | Residential real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	993	3,550
Related Allowance	60	0
Unpaid Principal Balance	993	3,568
Non-PCI Loans | Residential real estate | Recorded Investment With a Recorded Allowance
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	993	1,465
Non-PCI Loans | Residential real estate | Recorded Investment With no Recorded Allowance
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	$ 0	2,085
Non-PCI Loans | Construction and development
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total		417
Related Allowance		0
Unpaid Principal Balance		417
Non-PCI Loans | Construction and development | Recorded Investment With a Recorded Allowance
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total		0
Non-PCI Loans | Construction and development | Recorded Investment With no Recorded Allowance
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total		417
Non-PCI Loans | Home equity
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total		337
Related Allowance		67
Unpaid Principal Balance		359
Non-PCI Loans | Home equity | Recorded Investment With a Recorded Allowance
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total		20
Non-PCI Loans | Home equity | Recorded Investment With no Recorded Allowance
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total		$ 317