LOANS AND ALLOWANCE FOR LOAN LOSSES (Temporary Loan Modifications) (Details) $ in Thousands	Jul. 23, 2020 USD ($) loan	Jun. 30, 2020 USD ($) loan
Loans and Leases Receivable Disclosure [Line Items]
Original COVID-Related Loan Modification, Number Of Contracts | loan		1,481
Original COVID-Related Loan Modification, Recorded Investment | $		$ 511,671
Second COVID-Related Loan Modification, Number Of Contracts | loan		282
Second COVID-Related Loan Modification, Recorded Investment | $		$ 35,051
Temporary Loan Modification, Number of Contracts | loan		1,763
Temporary Loan Modification, Recorded Investment | $		$ 546,722
Commercial Portfolio Segment [Member]
Loans and Leases Receivable Disclosure [Line Items]
Original COVID-Related Loan Modification, Number Of Contracts | loan		992
Original COVID-Related Loan Modification, Recorded Investment | $		$ 410,298
Second COVID-Related Loan Modification, Number Of Contracts | loan		31
Second COVID-Related Loan Modification, Recorded Investment | $		$ 5,308
Retail Portfolio Segment [Member]
Loans and Leases Receivable Disclosure [Line Items]
Original COVID-Related Loan Modification, Number Of Contracts | loan		489
Original COVID-Related Loan Modification, Recorded Investment | $		$ 101,373
Second COVID-Related Loan Modification, Number Of Contracts | loan		251
Second COVID-Related Loan Modification, Recorded Investment | $		$ 29,743
Subsequent Event [Member]
Loans and Leases Receivable Disclosure [Line Items]
Original COVID-Related Loan Modification, Number Of Contracts | loan	732
Original COVID-Related Loan Modification, Recorded Investment | $	$ 282,899
Second COVID-Related Loan Modification, Number Of Contracts | loan	469
Second COVID-Related Loan Modification, Recorded Investment | $	$ 68,080
Temporary Loan Modification, Number of Contracts | loan	1,201
Temporary Loan Modification, Recorded Investment | $	$ 350,979
Subsequent Event [Member] | Commercial Portfolio Segment [Member]
Loans and Leases Receivable Disclosure [Line Items]
Original COVID-Related Loan Modification, Number Of Contracts | loan	544
Original COVID-Related Loan Modification, Recorded Investment | $	$ 242,272
Second COVID-Related Loan Modification, Number Of Contracts | loan	57
Second COVID-Related Loan Modification, Recorded Investment | $	$ 15,041
Subsequent Event [Member] | Retail Portfolio Segment [Member]
Loans and Leases Receivable Disclosure [Line Items]
Original COVID-Related Loan Modification, Number Of Contracts | loan	188
Original COVID-Related Loan Modification, Recorded Investment | $	$ 40,627
Second COVID-Related Loan Modification, Number Of Contracts | loan	412
Second COVID-Related Loan Modification, Recorded Investment | $	$ 53,039