BUSINESS COMBINATIONS - Schedule of Acquired Loans (Details) - USD ($) $ in Thousands	Jul. 01, 2019	Jun. 29, 2018	May 25, 2018
Fidelity Southern Corporation
Business Acquisition [Line Items]
Acquired receivables subject to ASC 310-30, fair value of acquired loans at acquisition date	$ 119,319
Acquired receivables subject to ASC 310-30, gross contractual amounts receivable at acquisition date	186,118
Acquired receivables subject to ASC 310-30, best estimate at acquisition date of contractual cash flows not expected to be collected	25,715
Acquired receivables not subject to ASC 310-30, fair value of acquired loans at acquisition date	3,389,091
Acquired receivables not subject to ASC 310-30, gross contractual amounts receivable at acquisition date	4,161,546
Acquired receivables not subject to ASC 310-30, best estimate at acquisition date of contractual cash flows not expected to be collected	$ 30,419
Hamilton State Bancshares, Inc.
Business Acquisition [Line Items]
Acquired receivables subject to ASC 310-30, fair value of acquired loans at acquisition date		$ 15,367
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		5,062
Acquired receivables not subject to ASC 310-30, fair value of acquired loans at acquisition date		1,277,819
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			$ 10,763
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			4,115
Acquired receivables not subject to ASC 310-30, fair value of acquired loans at acquisition date			744,941
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