LOANS AND ALLOWANCE FOR LOAN LOSSES - Impaired Loans (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated for impairment	$ 27,261	$ 15,553
Non-PCI Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated for impairment	27,261	15,553
Related Allowance	768	487
Unpaid Principal Balance	27,544	15,734
Non-PCI Loans | Recorded Investment With a Recorded Allowance
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated for impairment	10,670	3,278
Non-PCI Loans | Recorded Investment With no Recorded Allowance
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated for impairment	16,591	12,275
Non-PCI Loans | Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated for impairment	18,221	8,449
Related Allowance	651	314
Unpaid Principal Balance	18,221	8,515
Non-PCI Loans | Commercial real estate | Recorded Investment With a Recorded Allowance
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated for impairment	8,866	1,262
Non-PCI Loans | Commercial real estate | Recorded Investment With no Recorded Allowance
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated for impairment	9,355	7,187
Non-PCI Loans | Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated for impairment	7,982	2,623
Related Allowance	65	106
Unpaid Principal Balance	8,008	2,695
Non-PCI Loans | Commercial and industrial | Recorded Investment With a Recorded Allowance
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated for impairment	920	531
Non-PCI Loans | Commercial and industrial | Recorded Investment With no Recorded Allowance
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated for impairment	7,062	2,092
Non-PCI Loans | Commercial construction and development
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated for impairment	174	177
Related Allowance	0	0
Unpaid Principal Balance	431	180
Non-PCI Loans | Commercial construction and development | Recorded Investment With a Recorded Allowance
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated for impairment	0	0
Non-PCI Loans | Commercial construction and development | Recorded Investment With no Recorded Allowance
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated for impairment	174	177
Non-PCI Loans | Residential real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated for impairment	884	3,550
Related Allowance	52	0
Unpaid Principal Balance	884	3,568
Non-PCI Loans | Residential real estate | Recorded Investment With a Recorded Allowance
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated for impairment	884	1,465
Non-PCI Loans | Residential real estate | Recorded Investment With no Recorded Allowance
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated for impairment	0	2,085
Non-PCI Loans | Consumer construction and development
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated for impairment	0	417
Related Allowance		0
Unpaid Principal Balance		417
Non-PCI Loans | Consumer construction and development | Recorded Investment With a Recorded Allowance
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated for impairment		0
Non-PCI Loans | Consumer construction and development | Recorded Investment With no Recorded Allowance
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated for impairment		417
Non-PCI Loans | Home equity
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated for impairment	0	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]
Individually evaluated for impairment		20
Non-PCI Loans | Home equity | Recorded Investment With no Recorded Allowance
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated for impairment		$ 317
Non-PCI Loans | Other consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated for impairment	$ 0