LOANS, LEASES & ALLOWANCE FOR LOAN AND LEASE LOSSES - IMPAIRED LOANS (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2017
Receivables [Abstract]
Nonaccrual loans and leases—90 days past due plus other nonaccrual loans and leases	$ 47,821	$ 30,197	$ 26,815
Troubled debt restructured loans and leases—non-accrual	623	1,029	1,578
Troubled debt restructured loans and leases—performing	0	0	0
Total impaired loans and leases	$ 48,444	$ 31,226	$ 28,393