LOANS AND ALLOWANCE FOR LOAN LOSSES (Details 6) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	$ 2,914,502	$ 2,899,037
Non-PCI Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	16,205	9,985
Related Allowance	174	390
Unpaid Principal Balance	16,293	15,802
Non-PCI Loans | Recorded Investment With a Recorded Allowance
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	1,004	1,472
Non-PCI Loans | Recorded Investment With no Recorded Allowance
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	15,201	8,513
Non-PCI Loans | Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	10,745	5,398
Related Allowance	52	158
Unpaid Principal Balance	10,786	5,330
Non-PCI Loans | Commercial real estate | Recorded Investment With a Recorded Allowance
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	549	885
Non-PCI Loans | Commercial real estate | Recorded Investment With no Recorded Allowance
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	10,196	4,513
Non-PCI Loans | Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	2,884	2,343
Related Allowance	60	229
Unpaid Principal Balance	2,884	2,718
Non-PCI Loans | Commercial and industrial | Recorded Investment With a Recorded Allowance
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	393	525
Non-PCI Loans | Commercial and industrial | Recorded Investment With no Recorded Allowance
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	2,491	1,818
Non-PCI Loans | Construction and development
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	867	910
Related Allowance	0	0
Unpaid Principal Balance	875	1,971
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	867	910
Non-PCI Loans | Residential real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	1,336	928
Related Allowance	0	0
Unpaid Principal Balance	1,347	3,863
Non-PCI Loans | Residential real estate | Recorded Investment With a Recorded Allowance
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Non-PCI Loans | Residential real estate | Recorded Investment With no Recorded Allowance
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	1,336	928
Non-PCI Loans | Construction and development
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total		0
Related Allowance		0
Unpaid Principal Balance		0
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		0
Non-PCI Loans | Home equity
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	373	406
Related Allowance	62	3
Unpaid Principal Balance	401	1,920
Non-PCI Loans | Home equity | Recorded Investment With a Recorded Allowance
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	62	62
Non-PCI Loans | Home equity | Recorded Investment With no Recorded Allowance
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	311	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