BUSINESS COMBINATIONS - Acquired Loan Data (Details) - USD ($) $ in Thousands	Mar. 11, 2016	May 22, 2015
Jacksonville Bancorp, Inc
Business Acquisition [Line Items]
Acquired receivables subject to ASC 310-30, Fair Value of Acquired Loans at Acquisition Date	$ 26,951
Acquired receivables subject to ASC 310-30, Gross Contractual Amounts Receivable at Acquisition Date	42,314
Acquired receivables subject to ASC 310-30, Best Estimate at Acquisition Date of Contractual Cash Flows Not Expected to be Collected	9,181
Acquired receivables not subject to ASC 310-30, Fair Value of Acquired Loans at Acquisition Date	374,687
Acquired receivables not subject to ASC 310-30, Gross Contractual Amounts Receivable at Acquisition Date	488,346
Acquired receivables not subject to ASC 310-30, Best Estimate at Acquisition Date of Contractual Cash Flows Not Expected to be Collected	$ 0
Merchants and Southern Banks of Florida
Business Acquisition [Line Items]
Acquired receivables subject to ASC 310-30, Fair Value of Acquired Loans at Acquisition Date		$ 11,235
Acquired receivables subject to ASC 310-30, Gross Contractual Amounts Receivable at Acquisition Date		14,086
Acquired receivables subject to ASC 310-30, Best Estimate at Acquisition Date of Contractual Cash Flows Not Expected to be Collected		2,712
Acquired receivables not subject to ASC 310-30, Fair Value of Acquired Loans at Acquisition Date		180,311
Acquired receivables not subject to ASC 310-30, Gross Contractual Amounts Receivable at Acquisition Date		184,906
Acquired receivables not subject to ASC 310-30, Best Estimate at Acquisition Date of Contractual Cash Flows Not Expected to be Collected		$ 0