BUSINESS COMBINATIONS - Schedule of Acquired Loans (Details) - USD ($) $ in Thousands	Jun. 29, 2018	May 25, 2018
Hamilton State Bancshares, Inc.
Business Acquisition [Line Items]
Acquired receivables subject to ASC 310-30, fair value of acquired loans at acquisition date	$ 18,815
Acquired receivables subject to ASC 310-30, gross contractual amounts receivable at acquisition date	21,223
Acquired receivables subject to ASC 310-30, best estimate at acquisition date of contractual cash flows not expected to be collected	1,614
Acquired receivables not subject to ASC 310-30, fair value of acquired loans at acquisition date	1,279,921
Acquired receivables not subject to ASC 310-30, gross contractual amounts receivable at acquisition date	1,441,534
Acquired receivables not subject to ASC 310-30, best estimate at acquisition date of contractual cash flows not expected to be collected	$ 0
Atlantic Coast Financial Corporation
Business Acquisition [Line Items]
Acquired receivables subject to ASC 310-30, fair value of acquired loans at acquisition date		$ 12,083
Acquired receivables subject to ASC 310-30, gross contractual amounts receivable at acquisition date		16,077
Acquired receivables subject to ASC 310-30, best estimate at acquisition date of contractual cash flows not expected to be collected		2,795
Acquired receivables not subject to ASC 310-30, fair value of acquired loans at acquisition date		746,099
Acquired receivables not subject to ASC 310-30, gross contractual amounts receivable at acquisition date		1,041,768
Acquired receivables not subject to ASC 310-30, best estimate at acquisition date of contractual cash flows not expected to be collected		$ 0