LOANS AND ALLOWANCE FOR LOAN LOSSES (Details 6) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	$ 2,980,759	$ 2,899,037
Non-PCI Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	21,109	9,985
Related Allowance	537	390
Unpaid Principal Balance	27,740	15,802
Non-PCI Loans | Recorded Investment With a Recorded Allowance
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	3,411	1,472
Non-PCI Loans | Recorded Investment With no Recorded Allowance
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	17,698	8,513
Non-PCI Loans | Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	14,070	5,398
Related Allowance	209	158
Unpaid Principal Balance	14,756	5,330
Non-PCI Loans | Commercial real estate | Recorded Investment With a Recorded Allowance
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	702	885
Non-PCI Loans | Commercial real estate | Recorded Investment With no Recorded Allowance
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	13,368	4,513
Non-PCI Loans | Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	3,120	2,343
Related Allowance	138	229
Unpaid Principal Balance	4,052	2,718
Non-PCI Loans | Commercial and industrial | Recorded Investment With a Recorded Allowance
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	504	525
Non-PCI Loans | Commercial and industrial | Recorded Investment With no Recorded Allowance
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	2,616	1,818
Non-PCI Loans | Construction and development
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	461	910
Related Allowance	58	0
Unpaid Principal Balance	1,291	1,971
Non-PCI Loans | Construction and development | Recorded Investment With a Recorded Allowance
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	282	0
Non-PCI Loans | Construction and development | Recorded Investment With no Recorded Allowance
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	179	910
Non-PCI Loans | Residential real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	3,439	928
Related Allowance	132	0
Unpaid Principal Balance	4,812	3,863
Non-PCI Loans | Residential real estate | Recorded Investment With a Recorded Allowance
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	1,923	0
Non-PCI Loans | Residential real estate | Recorded Investment With no Recorded Allowance
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	1,516	928
Non-PCI Loans | Home equity
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	19	406
Related Allowance	0	3
Unpaid Principal Balance	2,829	1,920
Non-PCI Loans | Home equity | Recorded Investment With a Recorded Allowance
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	62
Non-PCI Loans | Home equity | Recorded Investment With no Recorded Allowance
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	$ 19	344
Non-PCI Loans | Other consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total		0
Related Allowance		0
Unpaid Principal Balance		0
Non-PCI Loans | Other consumer | Recorded Investment With a Recorded Allowance
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total		0
Non-PCI Loans | Other consumer | Recorded Investment With no Recorded Allowance
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total		$ 0