LOANS AND ALLOWANCE FOR LOAN LOSSES - Impaired Loans Average Balance and Interest Income (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated for impairment	$ 27,261	$ 15,553
Average Balance	15,702	12,826	$ 16,434
Interest Income	237	116	103
Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Average Balance	11,409	7,153	7,399
Interest Income	176	28	75
Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Average Balance	2,619	2,287	2,599
Interest Income	14	5	1
Commercial construction and development
Accounts, Notes, Loans and Financing Receivable [Line Items]
Average Balance	416	545	2,509
Interest Income	0	0	0
Residential real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Average Balance	1,112	2,249	2,616
Interest Income	47	83	27
Consumer construction and development
Accounts, Notes, Loans and Financing Receivable [Line Items]
Average Balance	0	209	214
Interest Income	0	0	0
Home equity
Accounts, Notes, Loans and Financing Receivable [Line Items]
Average Balance	146	383	998
Interest Income	0	0	0
Other consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Average Balance	0	0	99
Interest Income	0	0	$ 0
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 | 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 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 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 | 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 | 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 | 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 | Other consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated for impairment	0
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 a Recorded Allowance | Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated for impairment	8,866	1,262
Non-PCI Loans | Recorded Investment With a Recorded Allowance | Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated for impairment	920	531
Non-PCI Loans | Recorded Investment With a Recorded Allowance | Commercial construction and development
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated for impairment	0	0
Non-PCI Loans | Recorded Investment With a Recorded Allowance | Residential real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated for impairment	884	1,465
Non-PCI Loans | Recorded Investment With a Recorded Allowance | Consumer construction and development
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated for impairment		0
Non-PCI Loans | Recorded Investment With a Recorded Allowance | Home equity
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated for impairment		20
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 | Recorded Investment With no Recorded Allowance | Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated for impairment	9,355	7,187
Non-PCI Loans | Recorded Investment With no Recorded Allowance | Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated for impairment	7,062	2,092
Non-PCI Loans | Recorded Investment With no Recorded Allowance | Commercial construction and development
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated for impairment	174	177
Non-PCI Loans | Recorded Investment With no Recorded Allowance | Residential real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated for impairment	$ 0	2,085
Non-PCI Loans | Recorded Investment With no Recorded Allowance | Consumer construction and development
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated for impairment		417
Non-PCI Loans | Recorded Investment With no Recorded Allowance | Home equity
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated for impairment		$ 317