BUSINESS COMBINATIONS - Schedule of Purchased Credit-Impaired Loans Acquired (Details) - USD ($) $ in Thousands	Jul. 01, 2019	Jun. 29, 2018	May 25, 2018
Fidelity Southern Corporation
Business Acquisition [Line Items]
Contractually required principal and interest	$ 186,118
Non-accretable difference	(25,715)
Cash flows expected to be collected	160,403
Accretable yield	(41,084)
Total purchased credit-impaired loans acquired	$ 119,319
Hamilton State Bancshares, Inc.
Business Acquisition [Line Items]
Contractually required principal and interest		$ 21,223
Non-accretable difference		(5,062)
Cash flows expected to be collected		16,161
Accretable yield		(794)
Total purchased credit-impaired loans acquired		$ 15,367
Atlantic Coast Financial Corporation
Business Acquisition [Line Items]
Contractually required principal and interest			$ 16,077
Non-accretable difference			(4,115)
Cash flows expected to be collected			11,962
Accretable yield			(1,199)
Total purchased credit-impaired loans acquired			$ 10,763