LOANS AND ALLOWANCE FOR LOAN LOSSES - Non Accrual Loans (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual	$ 39,787	$ 21,194
Loans greater than 90 days past due and accruing	663	552
Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual	15,326	6,130
Loans greater than 90 days past due and accruing	0	0
Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual	12,648	4,126
Loans greater than 90 days past due and accruing	618	552
Commercial construction and development
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual	831	468
Loans greater than 90 days past due and accruing	0	0
Residential real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual	5,587	5,353
Loans greater than 90 days past due and accruing	0	0
Consumer construction and development
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual	114	1,324
Loans greater than 90 days past due and accruing	0	0
Home equity
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual	4,977	3,245
Loans greater than 90 days past due and accruing	0	0
Other consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual	304	548
Loans greater than 90 days past due and accruing	$ 45	$ 0